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Fully Active B Complex with Quatrefolic

Doctor's Best
4.7
★ ★ ★ ★ ★
(27183 ratings)
Folate 400 mcg
Vitamin B6 50 mg
Thiamin 60 mg
Vitamin B12 1000 mcg
Niacin 50 mg
Riboflavin 75 mg
Vitamin B5 100 mg
Product Image
Score81
Excellent active forms and broad coverage are balanced by exceptionally high totals for B6, B2, and niacin. The product fits a deliberate high-potency plan more than routine maintenance.
How scoring works
Quantity:60 Veggie Cap(s) • (60 servings)
Goals:
Energy
Brain Health
General Health
Heart Health
Cardiovascular Support
Productivity Boost
Mood Support
Metabolism Boost

Score 81

Excellent active forms and broad coverage are balanced by exceptionally high totals for B6, B2, and niacin. The product fits a deliberate high-potency plan more than routine maintenance.
How scoring works
$17.99($0.29 per serving)
Vitacost
$ 19.37
iHerb
$ 17.99
Amazon
$ 17.99
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Analysis

The formula uses active folate as Quatrefolic, methylcobalamin B12, P5P, and riboflavin 5-phosphate. These choices support broad B-vitamin metabolism and make the product appealing to users who specifically want activated forms.

Several entries appear additive: the two B6 forms total 100 mg, the two B2 forms total 150 mg, and niacin plus niacinamide total 100 mg. Those amounts are far above basic nutritional needs and create a meaningful tolerance concern, especially for prolonged use.

One veggie capsule per serving and a 60-day supply are convenient. The formula is better used as a targeted high-potency complex than as an automatic lifelong daily supplement.

Who is it for
  • Adults seeking an activated B-complex
  • People who specifically prefer methylfolate and methylcobalamin
  • Users following a short-term or monitored high-potency regimen
Best for
  • Activated B-vitamin forms
  • Broad energy-metabolism support
  • One-capsule convenience

Pros

  • Uses Quatrefolic folate
  • Provides methylcobalamin B12
  • Includes P5P and riboflavin 5-phosphate
  • Uses a veggie capsule

Cons

  • Combined vitamin B6 reaches 100 mg
  • Combined riboflavin reaches 150 mg
  • Niacin forms total 100 mg
  • Potency is excessive for many routine users

Warnings

  • Prolonged intake of 100 mg vitamin B6 can contribute to nerve symptoms such as tingling, numbness, or impaired coordination.
  • The 100 mg combined niacin amount may cause flushing, itching, stomach upset, or other intolerance in sensitive users.
  • Avoid stacking this formula with another high-potency B-complex because several duplicated forms add to already large totals.

Nutrient quality

84 Highest impact

Methylfolate, methylcobalamin, P-5-P, and riboflavin phosphate provide several body-ready forms. The apparent combined vitamin B6 and niacin amounts are aggressive for unsupervised daily use.

Ingredient transparency

77 High impact

All listed actives have amounts, but overlapping form entries make some totals ambiguous. No proprietary blend hides any active dose; daily directions and a complete inactive-ingredient list are not supplied.

Customer satisfaction

72 High impact

The supplied rating is favorable, with substantial volume behind it. Detailed feedback themes are absent, leaving repeated complaints and purpose fit uncertain.

Value for money

91 Highest impact

Active forms and high-potency coverage provide strong formula quality for the cost. The serving cost is favorable for a complete active B-complex.

Report analysis

Goals

Energy
Energy
Impact
Highest effect
A- Goal FitA Strength of SupportB- CoverageA- Formula Quality
Vitamin B5 · 100 mgRiboflavin · 75 mgThiamin · 60 mgVitamin B12 · 1000 mcg

A complete B-complex uses methylcobalamin, P5P, riboflavin phosphate, and Quatrefolic to support cellular fuel conversion. The B12 amount is particularly strong for an energy-focused nutrient formula.

The product does not include direct alertness, adaptogen, or major mitochondrial actives. High vitamin B6 and niacin amounts may be unnecessary for long-term use alongside other fortified products.

Study evidence
Riboflavin Mixed 6 studies
Vitamin B12 Disputed 14 studies
Brain Health
Brain Health
Impact
Highest effect
B+ Goal FitA Strength of SupportB CoverageA+ Formula Quality
Folate · 400 mcgVitamin B12 · 1000 mcgVitamin B6 · 50 mgThiamin · 60 mg

Active B6, methylfolate, methylcobalamin, and high-potency thiamine provide focused support for brain energy and neurotransmitter metabolism. The forms and amounts are clearly disclosed in a simple one-capsule formula.

The product does not cover structural lipids, adaptogens, or direct focus agents. It is a strong foundational B-vitamin option rather than a comprehensive nootropic.

Study evidence
Folate Supportive 90 studies
Thiamin Supportive 48 studies
Vitamin B12 Supportive 74 studies
Vitamin B6 Supportive 29 studies
General Health
General Health
Impact
Highest effect
A- Goal FitA- Strength of SupportB- CoverageA- Formula Quality
Folate · 400 mcgVitamin B12 · 1000 mcgVitamin C · 40 mg

Active methylfolate, methylcobalamin, P-5-P, and riboflavin phosphate provide strong form quality for methylation and energy metabolism. The broad B-vitamin profile is well disclosed and avoids a distracting proprietary blend.

Coverage is concentrated on B-vitamin pathways and offers little mineral, vitamin D, or essential-fat support. Vitamin B6 and niacin are high enough that routine long-term stacking with other fortified products deserves caution.

Study evidence
Folate Supportive 80 studies
Vitamin B12 Adverse 66 studies
Heart Health
Heart Health
Impact
High effect
B Goal FitA- Strength of SupportC CoverageA Formula Quality
Vitamin B12 · 1000 mcgVitamin B6 · 50 mgFolate · 400 mcg

Methylfolate and methylcobalamin provide a strong one-pathway formula for homocysteine metabolism. The product lacks magnesium, omega-3 fats, CoQ10, or another direct cardiovascular pathway.

Active B-vitamin forms and precise amounts are clear formulation strengths. Long-term vitamin B6 intake at the supplied amount may contribute to nerve symptoms in susceptible users.

Study evidence
Folate Supportive 116 studies
Vitamin B12 No effect 42 studies
Vitamin B6 Supportive 44 studies
Cardiovascular Support
Cardiovascular Support
Impact
High effect
C+ Goal FitA- Strength of SupportC CoverageA Formula Quality
Vitamin B12 · 1000 mcgVitamin B6 · 50 mgFolate · 400 mcgNiacin · 50 mgVitamin C · 40 mg

Active methylfolate, methylcobalamin, and P-5-P provide focused support for homocysteine metabolism. The formula is narrow and does not directly address lipid balance or vascular tone.

Form quality and disclosure are strong, and the main B vitamins reach practical amounts. The streamlined one-capsule design avoids unnecessary padding and gives its selected pathway useful depth.

Study evidence
Folate Supportive 93 studies
Vitamin B12 No effect 33 studies
Vitamin B6 Supportive 35 studies
Productivity Boost
Productivity Boost
Impact
High effect
C Goal FitA Strength of SupportC+ CoverageB+ Formula Quality
Vitamin B12 · 1000 mcgVitamin B12 · 1000 mcgVitamin B6 · 50 mg

Active B-vitamin forms support energy metabolism and may reduce fatigue when a deficiency is present. The formula does not provide an acute alertness ingredient or a stress-response adaptogen.

Methylcobalamin, Quatrefolic, and pyridoxal phosphate provide excellent form quality. The reported vitamin B6 amount is high enough that prolonged use warrants attention to tingling or numbness.

Study evidence
Vitamin B12 Supportive 15 studies
Vitamin B12 No effect 17 studies
Vitamin B6 Disputed 6 studies

Ingredients

IngredientAmount per serving
Vitamin C (Ascorbic Acid)
 40 mg
Vitamin B1 (Thiamine Hydrochloride)
 60 mg
Vitamin B2 (Riboflavin, Riboflavin 5-Phosphate)
 75 mg
Vitamin B3 (Niacin, Niacinamide)
 50 mg
Vitamin B6 (Pyridoxal 5-Phosphate, Pyridoxine Hydrochloride)
 50 mg
Quatrefolic (Folate)
 400 mcg
Vitamin B12 (Methylcobalamin)
 1000 mcg
Biotin
600 mcg
Pantothenic Acid (D-Calcium Pantothenate)
 100 mg
Gluten Free Adults 18–50 Vegan Vegetarian
Report overview
Folate · 400 mcg OverallScore96
A+ Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyA+ Value
+1

An active methylfolate form is clearly identified. The stated folate amount sits in the preferred range, while B12 co-supplementation meets the stated safety threshold. The active form is delivered with strong cost efficiency.

View ingredientView products
Vitamin B6 (Pyridoxal 5-Phosphate, Pyridoxine Hydrochloride) · 50 mg OverallScore92
B Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value
+1

The formula combines active P-5-P with pyridoxine hydrochloride, offering partial metabolic readiness at a stated 50 mg dose. The amount fits the preferred range, and one capsule clearly identifies both forms. The coenzyme B-complex is priced efficiently.

View ingredientView products
Thiamin (Thiamine Hydrochloride) · 60 mg OverallScore88
B- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

The formula uses thiamine hydrochloride, a standard water-soluble thiamin source. The clearly stated amount reaches the high-potency range, although the conventional delivery format offers no special absorption advantage. A low serving cost and substantial dose make the active-dose value favorable for a B-complex.

View ingredientView products
Loading alternative details
85 Performance

B-Complex Plus

Pure Encapsulations
<p>More focused Vitamin B12, Niacin, Thiamin coverage comes from 100.00mg Thiamine as Thiamine Hydrochloride, 108.00mg Niacin as Inositol Hexanicotinate, and 16.70mg Vitamin B6 as Pyridoxal 5-Phosphate. Compared with Fully Active B Complex with Quatrefolic, the disclosed forms and broader shared-nutrient fit provide a more targeted ingredient profile; however, inactive ingredients and complete use directions are not included in the supplied data.</p>
85 Performance

BioCoenzymated Active B Complex

Natural Factors
<p>More focused Vitamin B12, Niacin, Thiamin coverage comes from 25.00mg Vitamin B6 as Pyridoxal 5-Phosphate, 500.00mcg Vitamin B12 as Methylcobalamin, 100.00mg Niacin as Inositol Hexanicotinate, 10.00mg Riboflavin as Riboflavin 5-Phosphate, 680.00mcg DFE Folate as (6S)-5-Methyltetrahydrofolic Acid, Glucosamine Salt, 250.00mcg Biotin, 100.00mg Pantothenic Acid as Calcium D-Pantothenate, 50.00mg Choline as Choline Dihydrogen Citrate, 25.00mg Inositol, 30.00mg Thiamine as Benfotiamine, and 30.00mg Thiamine as Thiamine Hydrochloride. Compared with Fully Active B Complex with Quatrefolic, the disclosed forms and broader shared-nutrient fit provide a more targeted ingredient profile; however, inactive ingredients and complete use directions are not included in the supplied data.</p>
78 Performance

Active B-Complex

Integrative Therapeutics
<p>More focused Vitamin B12, Niacin, Thiamin coverage comes from 50.00mg Riboflavin as Riboflavin 5-Phosphate, 50.00mg Vitamin B6 as Pyridoxal 5-Phosphate, 1000.00mcg Vitamin B12 as Methylcobalamin, 50.00mg Thiamine as Thiamine Hydrochloride, 50.00mg Riboflavin as Vitamin B2, 100.00mg Niacin as Niacinamide, 50.00mg Vitamin B6 as Pyridoxine Hydrochloride, 800.00mcg DFE Folate, 300.00mcg Biotin, 100.00mg Pantothenic Acid as Calcium D-Pantothenate, 250.00mg Choline as Choline Bitartrate, and 250.00mg Inositol. Compared with Fully Active B Complex with Quatrefolic, the disclosed forms and broader shared-nutrient fit provide a more targeted ingredient profile; however, the substantial vitamin B6 amount may be unsuitable for long-term stacking.</p>
77 Budget

Vitamin B Complex

California Gold Nutrition
<p>A lower-cost serving retains useful Niacin, Thiamin, Vitamin B6 coverage through 34.00mg Vitamin B6 as Pyridoxal 5-Phosphate, 26.00mg Vitamin B2 as Riboflavin 5-Phosphate, and 100.00mg Pantothenic Acid as D-Calcium Pantothenate. Compared with Fully Active B Complex with Quatrefolic, it reduces recurring cost while keeping the formula nutritionally relevant; however, inactive ingredients and complete use directions are not included in the supplied data.</p>
75 Budget

B-Complex

Paradise Earth's Blend
<p>A lower-cost serving retains useful Vitamin B12, Niacin, Thiamin coverage through 400.00mcg Folate as L-Methylfolate, 50.00mg Vitamin B2 as Riboflavin 5-Phosphate, 500.00mcg Vitamin B12 as Methylcobalamin, 10.00mg Vitamin B-1 as Benfotiamine, 10.00mg Vitamin B1 as Thiamine Mononitrate, 50.00mg Vitamin B-3 as Niacin, 50.00mg Vitamin B-3 as Niacinamide, 50.00mg Vitamin B-6 as Pyridoxal 5-Phosphate, 300.00mcg Biotin, 50.00mg Vitamin B5 as Calcium Pantothenate, 50.00mg Choline Bitartrate, 50.00mg Inositol, 75.00mg Nature's C Veggie Berry Blend, 65.00mg Organic Alkalizing Green Juice Powders, 47.00mg Organic Aqua Superfoods, 33.00mg Stress & Energy Adaptogens (Extracts), and 31.00mg Probiotics. Compared with Fully Active B Complex with Quatrefolic, it reduces recurring cost while keeping the formula nutritionally relevant; however, some blended ingredients lack individual amounts, which limits a complete comparison.</p>
80 Budget

CellularActive Coenzyme B-Complex

Bluebonnet
<p>A lower-cost serving retains useful Vitamin B12, Niacin, Thiamin coverage through 25.00mg Vitamin B6 as Pyridoxal 5-Phosphate, 25.00mg Niacin as Inositol Hexaniacinate, 25.00mg Riboflavin, 25.00mg Thiamin as Cocarboxylase, 25.00mg Thiamin as Thiamine Mononitrate, 25.00mg Riboflavin as Riboflavin 5-Phosphate, 25.00mg Niacin as Niacinamide, 25.00mg Vitamin B6 as Pyridoxine Hydrochloride, 600.00mcg DFE Folate as (6S)-5-Methyltetrahydrofolic Acid, 600.00mcg DFE Folate as Folic Acid, 250.00mcg Vitamin B12 as Methylcobalamin, 300.00mcg Biotin as D-Biotin, 25.00mg Pantothenic Acid as Calcium D-Pantothenate, 25.00mg Inositol as Inositol Hexanicotinate, and 25.00mg Para-Aminobenzoic Acid. Compared with Fully Active B Complex with Quatrefolic, it reduces recurring cost while keeping the formula nutritionally relevant; however, inactive ingredients and complete use directions are not included in the supplied data.</p>
71 Value

B 50 Complex

Thompson
<p>A practical quality-to-cost balance combines Niacin, Thiamin, Vitamin B6 coverage with 50.00mg Niacin as Niacinamide, 50.00mg Vitamin B6 as Pyridoxine Hydrochloride, 50.00mg Riboflavin as Vitamin B2, 50.00mg Thiamine as Thiamine Mononitrate, 50.00mg Thiamine as Vitamin B1, 50.00mg Niacin as Vitamin B3, 400.00mcg Folic Acid, 50.00mcg Vitamin B12 as Cyanocobalamin, 50.00mcg Biotin, 50.00mg Pantothenic Acid as Calcium Pantothenate, and 205.00mg Base Complex Blend. Compared with Fully Active B Complex with Quatrefolic, the ingredient depth is favorable for the serving cost; however, some blended ingredients lack individual amounts, which limits a complete comparison.</p>
79 Value

B-100 Complex

21st Century
<p>A practical quality-to-cost balance combines Vitamin B12, Niacin, Thiamin coverage with 100.00mg Vitamin B1 as Thiamine Mononitrate, 100.00mg Niacin as Niacinamide, and 100.00mg Vitamin B2 as Riboflavin. Compared with Fully Active B Complex with Quatrefolic, the ingredient depth is favorable for the serving cost; however, the substantial vitamin B6 amount may be unsuitable for long-term stacking.</p>
74 Value

B 50 Complex

Spring Valley
<p>A practical quality-to-cost balance combines Niacin, Thiamin, Vitamin B6 coverage with 50.00mg Riboflavin, 50.00mg Vitamin B6, 50.00mg Niacin, 50.00mg Thiamine, 400.00mcg Folate, 50.00mcg Vitamin B12, 50.00mcg Biotin, and 50.00mg Pantothenic Acid. Compared with Fully Active B Complex with Quatrefolic, the ingredient depth is favorable for the serving cost; however, inactive ingredients and complete use directions are not included in the supplied data.</p>
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Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. B vitamins and prevention of cognitive decline and incident dementia: a systematic review and meta-analysis.
    Wang Z; Zhu W; Xing Y; Jia J; Tang Y · Nutrition reviews · 2022
    Meta-analysis46,175 participants95 studies pooledBrain Health Cognitive Support forFolate
  2. Folate and long-chain polyunsaturated fatty acid supplementation during pregnancy has long-term effects on the attention system of 8.5-y-old offspring: a randomized controlled trial.
    Catena A; Muñoz-Machicao JA; Torres-Espínola FJ; Martínez-Zaldívar C; Diaz-Piedra C; Gil A; Haile G; Györei E; Molloy AM; Decsi T; Koletzko B; Campoy C · The American journal of clinical nutrition · 2016
    Randomized trial136 participantsBrain Health Mental Focus forFolate
  3. Folic acid supplementation improves cognitive function in participants with cerebral small vascular disease-related cognitive impairment: a randomized controlled trial.
    Liu Y; Yu Z; Cai Z; Zhao L; Wang Y; Guo Y; Su X; Miao Y; Yi B; Wang Y; Zhang X · The journal of prevention of Alzheimer's disease · 2025
    Randomized trial220 participantsBrain Health forFolate
  4. Circulating folate concentrations and the risk of mild cognitive impairment: A prospective study on the older Chinese population without folic acid fortification.
    Fu J; Liu Q; Zhu Y; Sun C; Duan H; Huang L; Zhou D; Wang Z; Zhao J; Li Z; Ma F; Li W; Liu H; Zhang X; Chen Y; Wang G; Du Y; Huang G · European journal of neurology · 2022
    Cohort study3,974 participantsBrain Health forFolate
  5. Normal-But-Low Serum Folate Levels and the Risks for Cognitive Impairment.
    Jang S; Han JW; Shin J; Kim TH; Kwak KP; Kim K; Kim BJ; Kim SG; Kim JL; Kim TH; Moon SW; Park JY; Park JH; Byun S; Suh SW; Seo J; So Y; Ryu SH; Youn JC; Lee KH; Lee DY; Lee DW; Lee SB; Lee JJ; Lee JR; Jeong H; Jeong HG; Jhoo JH; Han K; Hong JW; Kim KW · Psychiatry investigation · 2020
    Cohort study3,910 participantsBrain Health forFolate
  6. Can thiamine substitution restore cognitive function in alcohol use disorder?
    Listabarth S; Vyssoki B; Marculescu R; Gleiss A; Groemer M; Trojer A; Harrer C; Weber S; König D · Alcohol and alcoholism (Oxford, Oxfordshire) · 2023
    Clinical trial50 participantsBrain Health forThiamin
  7. EFNS guidelines for diagnosis, therapy and prevention of Wernicke encephalopathy.
    Galvin R; Bråthen G; Ivashynka A; Hillbom M; Tanasescu R; Leone MA; EFNS · European journal of neurology · 2011
    Guideline / consensusBrain Health forThiamin
  8. Diagnosis and treatment of Wernicke's encephalopathy: A systematic literature review.
    Cantu-Weinstein A; Branning R; Alamir M; Weleff J; Do M; Nero N; Anand A · General hospital psychiatry · 2024
    Systematic review688 participants27 studies pooledBrain Health forThiamin
  9. Vitamin Supplementation and Dementia: A Systematic Review.
    Gil Martínez V; Avedillo Salas A; Santander Ballestín S · Nutrients · 2022
    Systematic reviewBrain Health forThiamin
  10. Association between dietary vitamin B1 intake and cognitive function among older adults: a cross-sectional study.
    Jia W; Wang H; Li C; Shi J; Yong F; Jia H · Journal of translational medicine · 2024
    Cross-sectional study2,422 participantsBrain Health forThiamin
  11. Relationship between vitamin B12 levels and motor development: A systematic review.
    Dos Santos MERA; da Silva KG; da Silva Souza AP; da Silva ABJ; da Silva RF; da Silva EHA; de Souza SL; Barros WMA · Clinical nutrition ESPEN · 2024
    Systematic review1,559 participants8 studies pooledBrain Health forVitamin B12
  12. Vitamin B12 supplementation improves cognitive function in middle aged and elderly patients with cognitive impairment.
    Zhou L; Bai X; Huang J; Tan Y; Yang Q · Nutricion hospitalaria · 2023
    Randomized trial115 participantsBrain Health Cognitive Support Mental Focus forVitamin B12
  13. Structural and Functional Brain Changes Associated with Vitamin B12 Deficiency using Magnetic Resonance Imaging: A Systematic Review and Meta-analysis.
    Alghamdi A · Current medical imaging · 2023
    Meta-analysis12 studies pooledBrain Health forVitamin B12
  14. Maternal vitamin B12, vitamin D, and folic acid status during pregnancy and child neurodevelopment: a systematic review.
    Franco L; de Andrade CVF; Margini LV; Sousa N · Frontiers in neuroscience · 2026
    Systematic review22 studies pooledBrain Health forVitamin B12
  15. Higher vitamin B12 from mid- to late life is related to slower rates of cognitive decline.
    Marino FR; Rogers G; Miller JW; Selhub J; Mez J; Crane PK; Mukherjee S; Saykin AJ; Hohman TJ; Trittschuh EH; Au R; Jacques PF; Hwang PH · Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Cohort study1,994 participantsBrain Health forVitamin B12
  16. Vitamin B12, B6, or Folate and Cognitive Function in Community-Dwelling Older Adults: A Systematic Review and Meta-Analysis.
    Zhang C; Luo J; Yuan C; Ding D · Journal of Alzheimer's disease : JAD · 2021
    Meta-analysis21 studies pooledBrain Health forVitamin B6
  17. Relationship between serum pyridoxal 5'-phosphate concentration and cognitive function in older Japanese.
    Itoh K; Kuwabara A; Otsuka R; Sugimoto T; Sakurai T; Niida S; Ao M; Tanaka K; Takenaka S; Kanouchi H · Journal of clinical biochemistry and nutrition · 2025
    Cross-sectional study266 participantsBrain Health forVitamin B6
  18. A randomized, controlled trial to evaluate the efficacy of pyridoxine and ascorbic acid on cognitive function and quality of life in post-menopausal women.
    Dhivya K; Sarumathy S; Manigandan G · Naunyn-Schmiedeberg's archives of pharmacology · 2025
    Randomized trial180 participantsBrain Health forVitamin B6
  19. Lower Plasma Vitamin B-6 is Associated with 2-Year Cognitive Decline in the Boston Puerto Rican Health Study.
    Palacios N; Scott T; Sahasrabudhe N; Gao X; Tucker KL · The Journal of nutrition · 2020
    Cohort study949 participantsBrain Health Cognitive Support forVitamin B6
  20. Are Dietary Supplements and Nutraceuticals Effective for Musculoskeletal Health and Cognitive Function? A Scoping Review.
    Iolascon G; Gimigliano R; Bianco M; De Sire A; Moretti A; Giusti A; Malavolta N; Migliaccio S; Migliore A; Napoli N; Piscitelli P; Resmini G; Tarantino U; Gimigliano F · The journal of nutrition, health & aging · 2017
    Scoping review12 studies pooledBrain Health forVitamin B6
  21. Associations of dietary folate, vitamin B6 and B12 intake with cardiovascular outcomes in 115664 participants: a large UK population-based cohort.
    Zhang B; Dong H; Xu Y; Xu D; Sun H; Han L · European journal of clinical nutrition · 2023
    Cohort study115,664 participantsCardiovascular Support forFolate
  22. Folate, Homocysteine, and Adverse Outcomes After Ischemic Stroke.
    Shi M; Zheng J; Liu Y; Mao X; Wu X; Chu M; Niu H; Sun L; Chang X; He Y; Liu Y; Guo D; Zhang Y; Zhu Z; Zhao J · Journal of the American Heart Association · 2024
    Cohort study3,530 participantsCardiovascular Support forFolate
  23. Effect of folic acid on endothelial function following acute myocardial infarction.
    Moens AL; Claeys MJ; Wuyts FL; Goovaerts I; Van Hertbruggen E; Wendelen LC; Van Hoof VO; Vrints CJ · The American journal of cardiology · 2007
    Randomized trial40 participantsCardiovascular Support forFolate
  24. Folic acid enhances endothelial function and reduces blood pressure in smokers: a randomized controlled trial.
    Mangoni AA; Sherwood RA; Swift CG; Jackson SH · Journal of internal medicine · 2003
    Randomized trial24 participantsCardiovascular Support forFolate
  25. 5-methyltetrahydrofolate, the active form of folic acid, restores endothelial function in familial hypercholesterolemia.
    Verhaar MC; Wever RM; Kastelein JJ; van Dam T; Koomans HA; Rabelink TJ · Circulation · 1998
    Non-randomized trial20 participantsCardiovascular Support forFolate
  26. Vitamin B12 Status and Cardiovascular Risk: Novel Insights from NMR-Based Lipoprotein Profiling in 20,665 Adults.
    Eken Y; Tekin N; Şahin F; Tay İ; Yıldırım Saral N; Serteser M; Baykal AT · Journal of clinical medicine · 2026
    Cross-sectional study20,665 participantsCardiovascular Support Heart Health forVitamin B12
  27. Pregnancy Metal Mixtures and Blood Pressure and Hypertension in Mid-Life: A Prospective U.S. Cohort Study.
    Zhang M; Aris IM; Cardenas A; Rifas-Shiman SL; Lin PD; Ngo LH; Oken E; Hivert MF; Juraschek SP · Hypertension (Dallas, Tex. : 1979) · 2025
    Cohort study493 participantsCardiovascular Support forVitamin B12
  28. Vitamin B12 Deficiency, Hyperhomocysteinemia, and Diabetes as Metabolic Determinants of Cardiovascular Risk in Mexican Women.
    Ramirez-Villalobos MD; Monterrubio-Flores E; Marquez-Murillo M; Alcalde-Rabanal J; Shamah-Levy T; Perichart-Perera O; Macias-Morales N; Campos-Nonato I · Nutrients · 2025
    Cross-sectional study1,197 participantsCardiovascular Support forVitamin B12
  29. Impact of serum vitamin (Vitamin D, Vitamin B12) and trace element (Fe, Zn, Cu) levels on major adverse cardiovascular events and poor prognosis in STEMI patients undergoing primary PCI.
    Wang C; Liu D; Tang M; Liu J; Ma Y · Journal of clinical biochemistry and nutrition · 2026
    Cohort study202 participantsCardiovascular Support forVitamin B12
  30. Vasoplegic syndrome after cardiovascular surgery: A review of pathophysiology and outcome-oriented therapeutic management.
    Datt V; Wadhhwa R; Sharma V; Virmani S; Minhas HS; Malik S · Journal of cardiac surgery · 2021
    Systematic reviewCardiovascular Support forVitamin B12
  31. Association between serum pyridoxal 5'-phosphate levels and all-cause, cardiovascular mortality, and cardiovascular disease in adults: a population-based cohort study.
    Xuan C; Liu RH; Zhao C; Li J; Zhou TT; Tian QW; He GW · Therapeutic advances in chronic disease · 2024
    Cohort studyCardiovascular Support forVitamin B6
  32. Folate and vitamin B6 rapidly normalize endothelial dysfunction in children with type 1 diabetes mellitus.
    MacKenzie KE; Wiltshire EJ; Gent R; Hirte C; Piotto L; Couper JJ · Pediatrics · 2006
    Randomized trial124 participantsCardiovascular Support forVitamin B6
  33. Pyridoxine improves endothelial function in cardiac transplant recipients.
    Miner SE; Cole DE; Evrovski J; Forrest Q; Hutchison S; Holmes K; Ross HJ · The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation · 2001
    Randomized trial31 participantsCardiovascular Support forVitamin B6
  34. Folate and vitamin B6 from diet and supplements in relation to risk of coronary heart disease among women.
    Rimm EB; Willett WC; Hu FB; Sampson L; Colditz GA; Manson JE; Hennekens C; Stampfer MJ · JAMA · 1998
    Cohort study80,082 participantsCardiovascular Support Heart Health forVitamin B6
  35. Efficacy and safety of pyridoxal 5'-phosphate (MC-1) in high-risk patients undergoing coronary artery bypass graft surgery: the MEND-CABG II randomized clinical trial.
    MEND-CABG II Investigators; Alexander JH; Emery RW; Carrier M; Ellis SJ; Mehta RH; Hasselblad V; Menasche P; Khalil A; Cote R; Bennett-Guerrero E; Mack MJ; Schuler G; Harrington RA; Tardif JC · JAMA · 2008
    Randomized trial3,023 participantsCardiovascular Support forVitamin B6
  36. Effects of 6-Month Folic Acid Supplementation on Cognitive Function and Blood Biomarkers in Mild Cognitive Impairment: A Randomized Controlled Trial in China.
    Ma F; Wu T; Zhao J; Han F; Marseglia A; Liu H; Huang G · The journals of gerontology. Series A, Biological sciences and medical sciences · 2017
    Randomized trial180 participantsCognitive Support forFolate
  37. Serum folate and B12 levels in association with cognitive impairment among seniors: results from the VELESTINO study in Greece and meta-analysis.
    Michelakos T; Kousoulis AA; Katsiardanis K; Dessypris N; Anastasiou A; Katsiardani KP; Kanavidis P; Stefanadis C; Papadopoulos FC; Petridou ET · Journal of aging and health · 2013
    Meta-analysis8,122 participants9 studies pooledCognitive Support forFolate
  38. Homocysteine and folate as risk factors for dementia and Alzheimer disease.
    Ravaglia G; Forti P; Maioli F; Martelli M; Servadei L; Brunetti N; Porcellini E; Licastro F · The American journal of clinical nutrition · 2005
    Cohort study816 participantsCognitive Support forFolate
  39. Folate mediates cognitive impairment of aged people with periodontitis.
    Liu F; Liu Y; Feng Y; Zhao J; Wang M; Ye M; Zhang Y; Gan X; Pan Q; Shen J · Nutritional neuroscience · 2025
    Cross-sectional study1,966 participantsCognitive Support forFolate
  40. Maternal Vitamin B12 Status During Pregnancy and Its Association With Outcomes of Pregnancy and Health of the Offspring: A Systematic Review and Implications for Policy in India.
    Behere RV; Deshmukh AS; Otiv S; Gupte MD; Yajnik CS · Frontiers in endocrinology · 2021
    Systematic review46 studies pooledCognitive Support forVitamin B12
  41. Effect of Maternal Vitamin B12 Supplementation on Cognitive Outcomes in South Indian Children: A Randomized Controlled Clinical Trial.
    Thomas S; Thomas T; Bosch RJ; Ramthal A; Bellinger DC; Kurpad AV; Duggan CP; Srinivasan K · Maternal and child health journal · 2019
    Randomized trial218 participantsCognitive Support forVitamin B12
  42. Effects of Folic Acid and Vitamin B12, Alone and in Combination on Cognitive Function and Inflammatory Factors in the Elderly with Mild Cognitive Impairment: A Single-blind Experimental Design.
    Ma F; Zhou X; Li Q; Zhao J; Song A; An P; Du Y; Xu W; Huang G · Current Alzheimer research · 2020
    Randomized trial240 participantsCognitive Support Productivity Boost forVitamin B12
  43. Prenatal vitamin B12 status and cognitive functioning in children at 4 years of age: The ECLIPSES Study.
    Cruz-Rodríguez J; Canals-Sans J; Hernández-Martínez C; Voltas-Moreso N; Arija V · Maternal & child nutrition · 2023
    Cohort study249 participantsCognitive Support Productivity Boost forVitamin B12
  44. Safety and Efficacy of High-Dose Vitamin B6 as an Adjunctive Treatment for Antipsychotic-Induced Hyperprolactinemia in Male Patients With Treatment-Resistant Schizophrenia.
    Zhuo C; Xu Y; Wang H; Fang T; Chen J; Zhou C; Li Q; Liu J; Xu S; Yao C; Yang W; Yang A; Li B; Chen Y; Tian H; Lin C · Frontiers in psychiatry · 2021
    Randomized trial200 participantsCognitive Support forVitamin B6
  45. Associations between dietary B vitamin intakes and cognitive function among elderly individuals: An observational study.
    Chen Q; Huang J; Shi X; Peng Y; Chen A; Huang L; Zhang Y; Chen X · Nutrition (Burbank, Los Angeles County, Calif.) · 2025
    Cross-sectional study2,716 participantsCognitive Support forVitamin B6
  46. Lower water-soluble vitamins and higher homocysteine are associated with neurodegenerative diseases.
    Zhang C; Hu Y; Cao X; Deng Y; Wang Y; Guan M; Wu X; Jiang H · Scientific reports · 2025
    Cohort study926 participantsCognitive Support forVitamin B6
  47. Associations of one-carbon metabolism, related B-vitamins and ApoE genotype with cognitive function in older adults: identification of a novel gene-nutrient interaction.
    Gordon S; Hoey L; McNulty H; Keenan J; Pangilinan F; Brody LC; Ward M; Strain JJ; McAnena L; McCann A; Molloy AM; Cunningham C; McCarroll K; Hughes CF · BMC medicine · 2025
    Observational study4,553 participantsCognitive Support forVitamin B6 Mental Focus forVitamin B12
  48. Physicochemical properties of and volatile compounds in riboflavin fortified cloudy apple juice; study of its effect on job fatigue among Egyptian construction workers.
    Fouad S; Ibrahim GE; Hussein AMS; Ibrahim FA; El Gendy A · Heliyon · 2021
    Non-randomized trialEnergy forRiboflavin
  49. Vitamin B status in patients with chronic fatigue syndrome.
    Heap LC; Peters TJ; Wessely S · Journal of the Royal Society of Medicine · 1999
    Case-control study30 participantsEnergy forRiboflavin
  50. B-vitamins, related vitamers, and metabolites in patients with quiescent inflammatory bowel disease and chronic fatigue treated with high dose oral thiamine.
    Bager P; Hvas CL; Hansen MM; Ueland P; Dahlerup JF · Molecular medicine (Cambridge, Mass.) · 2023
    Observational studyEnergy forRiboflavin
  51. Metabolic features of chronic fatigue syndrome.
    Naviaux RK; Naviaux JC; Li K; Bright AT; Alaynick WA; Wang L; Baxter A; Nathan N; Anderson W; Gordon E · Proceedings of the National Academy of Sciences of the United States of America · 2024
    Case-control study84 participantsEnergy forRiboflavin
  52. Effectiveness of Riboflavin in Inherited Metabolic Diseases: A Systematic Review
    Bregje Jaeger, Nina N Stolwijk, Femke Aaldering, Charlotte A Ruys, Marije Smits, Nicole I Wolf, Carla E M Hollak, Annet M Bosch · Journal of Inherited Metabolic Disease · 2026
    Systematic review381 studies pooledEnergy Metabolism Boost forRiboflavin
  53. A new perspective on vitamin B12 deficiency in rheumatology: a case-based review.
    Dułak NA; Rytlewska M; Jaskólska M; Chmielewski M · Rheumatology international · 2024
    Case series3 participantsEnergy forVitamin B12
  54. Effects of Vitamin B12 Supplementation on Cognitive Function, Depressive Symptoms, and Fatigue: A Systematic Review, Meta-Analysis, and Meta-Regression.
    Markun S; Gravestock I; Jäger L; Rosemann T; Pichierri G; Burgstaller JM · Nutrients · 2021
    Meta-analysis6,276 participants16 studies pooledEnergy forVitamin B12
  55. Patients' experiences with methylcobalamin injections in amyotrophic lateral sclerosis.
    Zubair AS; Saab L; Scharer K; Khokhar B · Brain circulation · 2024
    Qualitative study5 participantsEnergy forVitamin B12
  56. Cobalamin deficiency: clinical picture and radiological findings.
    Briani C; Dalla Torre C; Citton V; Manara R; Pompanin S; Binotto G; Adami F · Nutrients · 2014
    Narrative reviewEnergy forVitamin B12
  57. Vitamin B12 Deficiency: Common Questions and Answers.
    Patel H; McGuirk R · American family physician · 2025
    Narrative reviewEnergy forVitamin B12
  58. Intakes of Folate, Vitamin B6, and Vitamin B12 in Relation to All-Cause and Cause-Specific Mortality: A National Population-Based Cohort.
    Bo Y; Xu H; Zhang H; Zhang J; Wan Z; Zhao X; Yu Z · Nutrients · 2022
    Cohort study55,569 participantsGeneral Health forFolate
  59. The responsiveness of plasma homocysteine to small increases in dietary folic acid: a primary care study.
    Schorah CJ; Devitt H; Lucock M; Dowell AC · European journal of clinical nutrition · 1998
    Randomized trial119 participantsGeneral Health forFolate
  60. Associations of Serum Folate and Homocysteine Concentrations with All-Cause, Cardiovascular Disease, and Cancer Mortality in Men and Women in Korea: the Cardiovascular Disease Association Study.
    Song S; Song BM; Park HY · The Journal of nutrition · 2023
    Cohort study21,260 participantsGeneral Health forFolate
  61. The concept of folic acid supplementation and its role in prevention of neural tube defect among pregnant women: PRISMA.
    Seyoum Tola F · Medicine · 2024
    Systematic reviewGeneral Health forFolate
  62. Systematic review of adverse health outcomes associated with high serum or red blood cell folate concentrations.
    Colapinto CK; O'Connor DL; Sampson M; Williams B; Tremblay MS · Journal of public health (Oxford, England) · 2017
    Systematic review71,847 participants46 studies pooledGeneral Health forFolate
  63. Oral Vitamin B12 versus Placebo for the Prevention of Chemotherapy-Induced Peripheral Neuropathy in Gynecological Cancer Patients: A Randomized, Double-Blind, Placebo-Controlled Trial.
    Insin P; Chaiwongsa T; Prueksaritanond N · Asian Pacific journal of cancer prevention : APJCP · 2026
    Randomized trial40 participantsGeneral Health forVitamin B12
  64. Vitamin B12 Supplementation in Diabetic Neuropathy: A 1-Year, Randomized, Double-Blind, Placebo-Controlled Trial.
    Didangelos T; Karlafti E; Kotzakioulafi E; Margariti E; Giannoulaki P; Batanis G; Tesfaye S; Kantartzis K · Nutrients · 2021
    Randomized trial90 participantsGeneral Health forVitamin B12
  65. A single-center randomized controlled trial of local methylcobalamin injection for subacute herpetic neuralgia.
    Xu G; Lv ZW; Feng Y; Tang WZ; Xu GX · Pain medicine (Malden, Mass.) · 2014
    Randomized trial98 participantsGeneral Health forVitamin B12
  66. Local Injection of Methylcobalamin Combined with Lidocaine for Acute Herpetic Neuralgia.
    Xǔ G; Xu S; Tang WZ; Xú G; Cheng C; Xu J · Pain medicine (Malden, Mass.) · 2017
    Randomized trial204 participantsGeneral Health forVitamin B12
  67. The Effect of Vitamin B12 and Folic Acid Supplementation on Serum Homocysteine, Anemia Status and Quality of Life of Patients with Multiple Sclerosis.
    Nozari E; Ghavamzadeh S; Razazian N · Clinical nutrition research · 2022
    Clinical trial50 participantsGeneral Health forVitamin B12
  68. The Role of Sesbania grandiflora-Derived Biotin and Bambusa arundinacea-Derived Silica Extracts in Promoting Hair, Skin, and Nail Health: A Randomized, Double-Blind, Placebo-Controlled Clinical Study.
    Patel MN; Maheshvari J; Patel N · Cureus · 2025
    Randomized trial105 participantsHair Health forBiotin
  69. Low serum biotinidase activity in children with valproic acid monotherapy.
    Schulpis KH; Karikas GA; Tjamouranis J; Regoutas S; Tsakiris S · Epilepsia · 2001
    Clinical trial125 participantsHair Health forBiotin
  70. Vitamins A, B, C, and D: A Short Review for the Dermatologist.
    Coerdt KM; Goggins CA; Khachemoune A · Alternative therapies in health and medicine · 2021
    Narrative reviewHair Health forBiotin
  71. The Infatuation With Biotin Supplementation: Is There Truth Behind Its Rising Popularity? A Comparative Analysis of Clinical Efficacy versus Social Popularity.
    Soleymani T; Lo Sicco K; Shapiro J · Journal of drugs in dermatology : JDD · 2018
    Narrative reviewHair Health forBiotin
  72. Hair Loss After Metabolic and Bariatric Surgery: a Systematic Review and Meta-analysis.
    Zhang W; Fan M; Wang C; Mahawar K; Parmar C; Chen W; Yang W; Global Bariatric Research Collaborative · Obesity surgery · 2021
    Meta-analysis2,538 participants18 studies pooledHair Health forFolate
  73. Quantitative Analysis of Selected Circulating Hematological Biomarkers, Essential Minerals, Vitamins, and Thyroid Hormones in Females Affected by Hair Loss.
    Al-Fawaeir S; Al-Odat I · Diseases (Basel, Switzerland) · 2025
    Case-control study200 participantsHair Health forFolate Hair Health forVitamin B12
  74. Twelve weeks of protracted venous infusion of fluorouracil (5-FU) is as effective as 6 months of bolus 5-FU and folinic acid as adjuvant treatment in colorectal cancer.
    Saini A; Norman AR; Cunningham D; Chau I; Hill M; Tait D; Hickish T; Iveson T; Lofts F; Jodrell D; Ross PJ; Oates J · British journal of cancer · 2003
    Randomized trialHair Health forFolate
  75. Role of oxaliplatin combined with 5-fluorouracil and folinic acid in the first- and second-line treatment of advanced colorectal cancer.
    Jonker D; Rumble RB; Maroun J; Gastrointestinal Cancer Disease Site Groupof Cancer Care Ontario’s Program in Evidence-Based Care · Current oncology (Toronto, Ont.) · 2012
    Randomized trialHair Health forFolate
  76. Phase I-II study of vinorelbine in combination with 5-fluorouracil and folinic acid as first-line chemotherapy in metastatic breast cancer: a regimen with a low subjective toxic burden.
    Nolè F; de Braud F; Aapro M; Minchella I; De Pas TM; Zampino MG; Monti S; Andreoni G; Goldhirsch A · Annals of oncology : official journal of the European Society for Medical Oncology · 1997
    Randomized trialHair Health forFolate
  77. A pilot study evaluating the efficacy of topically applied niacin derivatives for treatment of female pattern alopecia.
    Draelos ZD; Jacobson EL; Kim H; Kim M; Jacobson MK · Journal of cosmetic dermatology · 2009
    Randomized trial60 participantsHair Health forNiacin
  78. Topical adenosine increases thick hair ratio in Japanese men with androgenetic alopecia.
    Watanabe Y; Nagashima T; Hanzawa N; Ishino A; Nakazawa Y; Ogo M; Iwabuchi T; Tajima M · International journal of cosmetic science · 2016
    Randomized trial102 participantsHair Health forNiacin
  79. Factors Associated with Premature Hair Graying in a Young Indian Population.
    Chakrabarty S; Krishnappa PG; Gowda DG; Hiremath J · International journal of trichology · 2016
    Case-control study74 participantsHair Health forVitamin B12
  80. Risk Factors for Pediatric Alopecia Areata: Clinical and Biochemical Findings from a Case - Control Study.
    İritaş SY · Dermatology practical & conceptual · 2026
    Case-control study600 participantsHair Health forVitamin B12
  81. Hair Loss After Laparoscopic Sleeve Gastrectomy.
    Katsogridaki G; Tzovaras G; Sioka E; Perivoliotis K; Zachari E; Magouliotis D; Tasiopoulou V; Chatedaki C; Zacharoulis D · Obesity surgery · 2019
    Cohort study50 participantsHair Health forVitamin B12
  82. Demographic Characteristics and Association of Serum Vitamin B12, Ferritin and Thyroid Function with Premature Canities in Indian Patients from an Urban Skin Clinic of North India: A Retrospective Analysis of 71 Cases.
    Sonthalia S; Priya A; Tobin DJ · Indian journal of dermatology · 2022
    Cross-sectional study71 participantsHair Health forVitamin B12
  83. Folic Acid Therapy Reduces the First Stroke Risk Associated With Hypercholesterolemia Among Hypertensive Patients.
    Qin X; Li J; Spence JD; Zhang Y; Li Y; Wang X; Wang B; Sun N; Chen F; Guo J; Yin D; Sun L; Tang G; He M; Fu J; Cai Y; Shi X; Ye P; Chen H; Zhao S; Chen M; Gao C; Kong X; Hou FF; Huang Y; Huo Y · Stroke · 2017
    Randomized trial20,702 participantsHeart Health forFolate
  84. Periconception Red Blood Cell Folate and Offspring Congenital Heart Disease : Nested Case-Control and Mendelian Randomization Studies.
    Chen H; Zhang Y; Wang D; Chen X; Li M; Huang X; Jiang Y; Dou Y; Wang Y; Ma X; Sheng W; Jia B; Yan W; Huang G; SPCC (Shanghai Preconception Cohort) Group · Annals of internal medicine · 2022
    Case-control study985 participantsHeart Health forFolate
  85. Intake of vitamin B6, folate, and vitamin B12 and risk of coronary heart disease: a systematic review and dose-response meta-analysis of prospective cohort studies.
    Jayedi A; Zargar MS · Critical reviews in food science and nutrition · 2020
    Meta-analysis369,746 participants11 studies pooledHeart Health forFolate Heart Health forVitamin B6
  86. Folate Biomarkers, Folate Intake, and Risk of Death From All Causes, Cardiovascular Disease, and Cancer: A Systematic Review and Dose-Response Meta-Analysis of Prospective Cohort Studies.
    Fallah M; Karim Dehnavi M; Lotfi K; Aminianfar A; Azadbakht L; Esmaillzadeh A · Nutrition reviews · 2025
    Meta-analysis423,304 participants25 studies pooledHeart Health forFolate
  87. The association between folic acid supplementation and congenital heart defects: Systematic review and meta-analysis.
    Wondemagegn AT; Afework M · SAGE open medicine · 2022
    Meta-analysis37 studies pooledHeart Health forFolate
  88. Vitamin B12 deficiency is associated with cardiovascular autonomic neuropathy in patients with type 2 diabetes.
    Hansen CS; Jensen JS; Ridderstråle M; Vistisen D; Jørgensen ME; Fleischer J · Journal of diabetes and its complications · 2018
    Cross-sectional study469 participantsHeart Health forVitamin B12
  89. Vitamin B12 and folate status in early pregnancy and cardiometabolic risk factors in the offspring at age 5-6 years: findings from the ABCD multi-ethnic birth cohort.
    Krikke GG; Grooten IJ; Vrijkotte TG; van Eijsden M; Roseboom TJ; Painter RC · BJOG : an international journal of obstetrics and gynaecology · 2016
    Cohort study1,950 participantsHeart Health forVitamin B12
  90. Orthostatic tolerance in older patients with vitamin B12 deficiency before and after vitamin B12 replacement.
    Moore A; Ryan J; Watts M; Pillay I; Clinch D; Lyons D · Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2004
    Non-randomized trial16 participantsHeart Health forVitamin B12
  91. The impact of folic acid/VB12 deficiency on essential hypertension in children and adolescents: from a nested case-control and a cohort study.
    Liang X; Huang D; Bi Y; He Y; Mao T; Liu Q; Hu G; Tong J; Chen L; Wang Y; An X; Jiang X; Tahir MF · Journal of human hypertension · 2024
    Observational study596 participantsHeart Health forVitamin B12
  92. Intake of folate, vitamin B6 and vitamin B12 and the risk of CHD: the Japan Public Health Center-Based Prospective Study Cohort I.
    Ishihara J; Iso H; Inoue M; Iwasaki M; Okada K; Kita Y; Kokubo Y; Okayama A; Tsugane S; JPHC Study Group · Journal of the American College of Nutrition · 2008
    Cohort study40,803 participantsHeart Health forVitamin B6
  93. The effect of B-vitamins on the prevention and treatment of cardiovascular diseases: a systematic review and meta-analysis.
    Miao Y; Guo Y; Chen Y; Lin Y; Lu Y; Guo Q · Nutrition reviews · 2024
    Meta-analysisHeart Health forVitamin B6
  94. Folate and vitamin B(6) intake and risk of acute myocardial infarction in Italy.
    Tavani A; Pelucchi C; Parpinel M; Negri E; La Vecchia C · European journal of clinical nutrition · 2005
    Case-control study985 participantsHeart Health forVitamin B6
  95. Cerebral folate receptor autoantibodies in autism spectrum disorder.
    Frye RE; Sequeira JM; Quadros EV; James SJ; Rossignol DA · Molecular psychiatry · 2014
    Non-randomized trial93 participantsMental Focus forFolate
  96. Folate, vitamin B-12, and cognitive function in the Boston Puerto Rican Health Study.
    Boumenna T; Scott TM; Lee JS; Palacios N; Tucker KL · The American journal of clinical nutrition · 2026
    Cross-sectional study1,408 participantsMental Focus forFolate
  97. Vitamins B9 and B12 in children with attention deficit hyperactivity disorder (ADHD).
    Razavinia F; Ebrahimiyan A; Faal Siahkal S; Ghazinezhad N; Abedi P · International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition · 2024
    Meta-analysis982 participants6 studies pooledMental Focus forFolate
  98. Does L-Methylfolate Supplement Methylphenidate Pharmacotherapy in Attention-Deficit/Hyperactivity Disorder?: Evidence of Lack of Benefit From a Double-Blind, Placebo-Controlled, Randomized Clinical Trial.
    Surman C; Ceranoglu A; Vaudreuil C; Albright B; Uchida M; Yule A; Spencer A; Boland H; Grossman R; Rhodewalt L; Fitzgerald M; Biederman J · Journal of clinical psychopharmacology · 2019
    Randomized trial44 participantsMental Focus forFolate
  99. Vitamin B12 Levels Association with Functional and Structural Biomarkers of Central Nervous System Injury in Older Adults.
    Beaudry-Richard A; Abdelhak A; Saloner R; Sacco S; Montes SC; Oertel FC; Cordano C; Jabassini N; Ananth K; Gomez A; Keihani A; Chapman M; Javvadi S; Saha S; Staffaroni A; Songster C; Warren M; Boscardin JW; Kramer J; Miller B; Miller JW; Green R; Green AJ · Annals of neurology · 2025
    Cross-sectional study231 participantsMental Focus forVitamin B12
  100. Cobalamin: a critical vitamin in the elderly.
    Wolters M; Ströhle A; Hahn A · Preventive medicine · 2005
    Narrative reviewMental Focus forVitamin B12
  101. The association of betaine, homocysteine and related metabolites with cognitive function in Dutch elderly people.
    Eussen SJ; Ueland PM; Clarke R; Blom HJ; Hoefnagels WH; van Staveren WA; de Groot LC · The British journal of nutrition · 2007
    Randomized trial195 participantsMental Focus forVitamin B12
  102. Vitamin B-6 supplementation in elderly men: effects on mood, memory, performance and mental effort.
    Deijen JB; van der Beek EJ; Orlebeke JF; van den Berg H · Psychopharmacology · 1995
    Randomized trial76 participantsMental Focus forVitamin B6
  103. The effect of vitamin B6 on cognition.
    Malouf R; Grimley Evans J · The Cochrane database of systematic reviews · 2004
    Systematic review109 participants2 studies pooledMental Focus forVitamin B6
  104. Antiemetic use during pregnancy and child neurodevelopment: population-based birth cohort study.
    Cho Y; Choi EY; Han JY; Kim H; Choe YJ; Shin JY · BMC medicine · 2025
    Cohort study630,904 participantsMental Focus forVitamin B6
  105. A nutritional blend of taurine, vitamins B6, B9, and B12 improves motivated behaviors in healthy adults-a double-blinded randomized clinical trial.
    Anlacan VM; Jamora RDG; Krattinger LF; De Longis E; Hartweg M; Steinmann M; Trovò L · Frontiers in nutrition · 2026
    Randomized trial44 participantsMental Focus Productivity Boost forVitamin B6
  106. B-Vitamin Therapy for Kidney Transplant Recipients Lowers Homocysteine and Improves Selective Cognitive Outcomes in the Randomized FAVORIT Ancillary Cognitive Trial
    Tammy M Scott, Graham Rogers, Daniel E Weiner, Kathryn Livingston, Jacob Selhub, Paul F Jacques, Irwin H Rosenberg, Aron M Troen · The Journal of Prevention of Alzheimer's Disease · 2017
    Randomized trial584 participantsMental Focus forVitamin B6
  107. Disorders of flavin adenine dinucleotide metabolism: MADD and related deficiencies.
    Mereis M; Wanders RJA; Schoonen M; Dercksen M; Smuts I; van der Westhuizen FH · The international journal of biochemistry & cell biology · 2024
    Systematic reviewMetabolism Boost forRiboflavin
  108. Anaemia during pregnancy: could riboflavin deficiency be implicated?
    Duffy B; McNulty H; Ward M; Pentieva K · The Proceedings of the Nutrition Society · 2026
    Narrative reviewMetabolism Boost forRiboflavin
  109. Effects of riboflavin and folic acid supplementation on plasma homocysteine levels in healthy subjects.
    Chuang CZ; Boyles A; Legardeur B; Su J; Japa S; Lopez-S A · The American journal of the medical sciences · 2006
    Non-randomized trial34 participantsMetabolism Boost forRiboflavin
  110. Riboflavin and riboflavin-derived cofactors in adolescent girls with anorexia nervosa.
    Capo-chichi CD; Guéant JL; Lefebvre E; Bennani N; Lorentz E; Vidailhet C; Vidailhet M · The American journal of clinical nutrition · 1999
    Clinical trial34 participantsMetabolism Boost forRiboflavin
  111. Association of maternal vitamin B12 and folate levels in early pregnancy with gestational diabetes: a prospective UK cohort study (PRiDE study).
    Saravanan P; Sukumar N; Adaikalakoteswari A; Goljan I; Venkataraman H; Gopinath A; Bagias C; Yajnik CS; Stallard N; Ghebremichael-Weldeselassie Y; Fall CHD · Diabetologia · 2022
    Cohort study4,746 participantsMetabolism Boost forVitamin B12
  112. First Revision of the Guidelines for the Diagnosis and Management of Remethylation Disorders.
    Olivieri G; Bordugo A; Burnyte B; Costetti A; Couce ML; Diogo L; Feillet F; Froese DS; Greco B; Gueant JL; Hannibal L; Hörster F; Kožich V; La Marca G; Manoli I; Mochel F; Orazi L; Pérez B; Schiff M; Schwahn BC; Schwartz I; Stepien KM; Sykut-Cegielska J; Tangeraas T; Zetterström RH; Dionisi-Vici C; Huemer M · Journal of inherited metabolic disease · 2026
    Guideline / consensusMetabolism Boost forVitamin B12
  113. Cobalamin deficiency with and without neurologic abnormalities: differences in homocysteine and methionine metabolism.
    Carmel R; Melnyk S; James SJ · Blood · 2003
    Observational study39 participantsMetabolism Boost forVitamin B12
  114. Efficacy of sublingual and oral vitamin B12 versus intramuscular administration: insights from a systematic review and meta-analysis.
    Mazur M; Ndokaj A; Salerno C; Vallone J; Ardan R; Bietolini S; Carrouel F; Wilk A; Sarig R; Ottolenghi L; Bourgeois D · Frontiers in pharmacology · 2026
    Meta-analysis6,098 participants16 studies pooledMetabolism Boost forVitamin B12
  115. Diagnosis and treatment of vitamin B12 deficiency in children.
    Kanvinde P; Khurana R; Mudaliar S · Frontiers in nutrition · 2026
    Narrative reviewMetabolism Boost forVitamin B12
  116. Plasma vitamin B6 vitamers before and after oral vitamin B6 treatment: a randomized placebo-controlled study.
    Bor MV; Refsum H; Bisp MR; Bleie Ø; Schneede J; Nordrehaug JE; Ueland PM; Nygard OK; Nexø E · Clinical chemistry · 2003
    Randomized trial90 participantsMetabolism Boost forVitamin B6
  117. Dietary one-carbon metabolism nutrients and risk of MASLD progression: a prospective cohort study.
    Shen L; Wang K; Li R; Li Y; Guo Y; Li F; Yuan J; Yang Z; Xia B; Lin X · European journal of clinical nutrition · 2026
    Cohort study46,800 participantsMetabolism Boost forVitamin B6
  118. Associations of Vitamin B6 Intake and Plasma Pyridoxal 5'-Phosphate with Plasma Polyunsaturated Fatty Acids in US Older Adults: Findings from NHANES 2003-2004.
    Kim H; Enrione EB; Narayanan V; Li T; Campa A · Nutrients · 2022
    Cross-sectional study461 participantsMetabolism Boost forVitamin B6
  119. Influence of oral contraceptives, pyridoxine (vitamin B6), and tryptophan on carbohydrate metabolism.
    Adams PW; Wynn V; Folkard J; Seed M · Lancet (London, England) · 1976
    Clinical trial46 participantsMetabolism Boost forVitamin B6
  120. Effect of oral contraceptives and vitamin B6 deficiency on carbohydrate metabolism.
    Rose DP; Leklem JE; Brown RR; Linkswiler HM · The American journal of clinical nutrition · 1975
    Clinical trialMetabolism Boost forVitamin B6
  121. The efficacy and safety of nutrient supplements in the treatment of mental disorders: a meta-review of meta-analyses of randomized controlled trials.
    Firth J; Teasdale SB; Allott K; Siskind D; Marx W; Cotter J; Veronese N; Schuch F; Smith L; Solmi M; Carvalho AF; Vancampfort D; Berk M; Stubbs B; Sarris J · World psychiatry : official journal of the World Psychiatric Association (WPA) · 2025
    Systematic review10,951 participants33 studies pooledMood Support forFolate
  122. Continuous supplementation of folic acid in pregnancy and the risk of perinatal depression-A meta-analysis.
    Jin X; Cheng Z; Yu X; Tao Q; Huang R; Wang S · Journal of affective disorders · 2022
    Meta-analysis26,275 participants15 studies pooledMood Support forFolate
  123. Efficacy of B-vitamins and vitamin D therapy in improving depressive and anxiety disorders: a systematic review of randomized controlled trials.
    Borges-Vieira JG; Cardoso CKS · Nutritional neuroscience · 2023
    Systematic review2,256 participants20 studies pooledMood Support forFolate Mood Support forVitamin B12
  124. Folate supplementation as a beneficial add-on treatment in relieving depressive symptoms: A meta-analysis of meta-analyses.
    Gao S; Khalid A; Amini-Salehi E; Radkhah N; Jamilian P; Badpeyma M; Zarezadeh M · Food science & nutrition · 2024
    Meta-analysis11 studies pooledMood Support forFolate
  125. Oral 5'-methyltetrahydrofolic acid in senile organic mental disorders with depression: results of a double-blind multicenter study.
    Passeri M; Cucinotta D; Abate G; Senin U; Ventura A; Stramba Badiale M; Diana R; La Greca P; Le Grazie C · Aging (Milan, Italy) · 1993
    Randomized trial96 participantsMood Support forFolate
  126. Subjective well-being in older adults: folate and vitamin B12 independently predict positive affect.
    Edney LC; Burns NR; Danthiir V · The British journal of nutrition · 2016
    Cohort study391 participantsMood Support forVitamin B12
  127. Association between of vitamin B12 status during pregnancy and probable postpartum depression: the ECLIPSES study.
    Cruz-Rodríguez J; Canals-Sans J; Hernández-Martínez C; Arija V · Journal of reproductive and infant psychology · 2025
    Cohort study336 participantsMood Support forVitamin B12
  128. The biological relationship among depression, vitamins B9, B12, and D, and genetic variants: a systematic review.
    Soriano-Gonzalez R; Ramirez-Olea H; Gonzalez-Soltero R; Chavez-Santoscoy RA · Frontiers in nutrition · 2025
    Systematic review24 studies pooledMood Support forVitamin B12
  129. Associations of dietary B vitamins intakes with depression in adults.
    Wu Y; Li S; Wang W; Zhang D · International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition · 2023
    Observational study17,732 participantsMood Support forVitamin B12 Mood Support forVitamin B6
  130. High Dose Vitamin B6 Reduces Depression Symptoms.
    Field DT; Cracknell R; Biagi N · Depression and anxiety · 2026
    Randomized trial267 participantsMood Support forVitamin B6
  131. Can Vitamin B6 Help to Prevent Postpartum Depression? A Randomized Controlled Trial.
    Khodadad M; Bahadoran P; Kheirabadi GR; Sabzghabaee AM · International journal of preventive medicine · 2022
    Randomized trial81 participantsMood Support Stress Relief forVitamin B6
  132. Associations of Dietary Intake of Vitamin B6 and Plasma Pyridoxal 5'-Phosphate Level With Depression in US Adults: Findings From NHANES 2005-2010.
    Lu J; Mao H; Tan Y; Luo G · Brain and behavior · 2024
    Cross-sectional study24,683 participantsMood Support forVitamin B6
  133. Impact of vitamin B6 status on psychological distress in a longitudinal study of HIV-1 infection.
    Shor-Posner G; Feaster D; Blaney NT; Rocca H; Mantero-Atienza E; Szapocznik J; Eisdorfer C; Goodkin K; Baum MK · International journal of psychiatry in medicine · 1995
    Cohort study88 participantsMood Support forVitamin B6
  134. Effects of Physical Activity and Micronutrients on Cognitive Performance in Children Aged 6 to 11 Years: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
    Meli AM; Ali A; Mhd Jalil AM; Mohd Yusof H; Tan MMC · Medicina (Kaunas, Lithuania) · 2022
    Meta-analysisProductivity Boost forVitamin B12
  135. Cognitive function in an elderly population: interaction between vitamin B12 status, depression, and apolipoprotein E ε4: the Hordaland Homocysteine Study.
    Vogiatzoglou A; Smith AD; Nurk E; Drevon CA; Ueland PM; Vollset SE; Nygaard HA; Engedal K; Tell GS; Refsum H · Psychosomatic medicine · 2013
    Cross-sectional study1,935 participantsProductivity Boost forVitamin B12
  136. Cognitive profile and inflammatory markers in children and adolescents with specific learning disorder: a cross-sectional study.
    Balatacı U; Ay B · Frontiers in pediatrics · 2026
    Case-control study108 participantsProductivity Boost forVitamin B12
  137. Association between vitamin B12 levels and cognitive impairment in older adults.
    Aguilar-Navarro SG; Carbajal-Silva JC; Palacios-Hernández MGI; Gutiérrez-Gutierrez LA; Ávila-Funes JA; Mimenza-Alvarado AJ · Gaceta medica de Mexico · 2023
    Cross-sectional study241 participantsProductivity Boost forVitamin B12
  138. Effects of vitamin B12 on performance and circadian rhythm in normal subjects.
    Mayer G; Kröger M; Meier-Ewert K · Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 1997
    Randomized trial20 participantsProductivity Boost forVitamin B12
  139. Dietary intakes and biomarker patterns of folate, vitamin B6, and vitamin B12 can be associated with cognitive impairment by hypermethylation of redox-related genes NUDT15 and TXNRD1.
    An Y; Feng L; Zhang X; Wang Y; Wang Y; Tao L; Qin Z; Xiao R · Clinical epigenetics · 2020
    Cohort study2,533 participantsProductivity Boost forVitamin B12
  140. Homocysteine, folate, and vitamins B6 and B12 blood levels in relation to cognitive performance: the Maine-Syracuse study.
    Elias MF; Robbins MA; Budge MM; Elias PK; Brennan SL; Johnston C; Nagy Z; Bates CJ · Psychosomatic medicine · 2008
    Cross-sectional study812 participantsProductivity Boost forVitamin B12
  141. Vitamin B6, B9, and B12 Intakes and Cognitive Performance in Elders: National Health and Nutrition Examination Survey, 2011-2014.
    Xu H; Wang S; Gao F; Li C · Neuropsychiatric disease and treatment · 2022
    Cross-sectional study2,421 participantsProductivity Boost forVitamin B6
  142. Effect of megavitamin treatment on mental performance and plasma vitamin B6 concentrations in mentally retarded young adults.
    Coburn SP; Schaltenbrand WE; Mahuren JD; Clausman RJ; Townsend D · The American journal of clinical nutrition · 1983
    Non-randomized trialProductivity Boost forVitamin B6
  143. Identifying Key Predictors of Cognitive Dysfunction in Older People Using Supervised Machine Learning Techniques: Observational Study.
    Rankin D; Black M; Flanagan B; Hughes CF; Moore A; Hoey L; Wallace J; Gill C; Carlin P; Molloy AM; Cunningham C; McNulty H · JMIR medical informatics · 2024
    Cohort studyProductivity Boost forVitamin B6
  144. Inappropriate nutrients intake is associated with lower functional status and inferior quality of life in older adults with depression.
    Guligowska A; Pigłowska M; Fife E; Kostka J; Sołtysik BK; Kroc Ł; Kostka T · Clinical interventions in aging · 2017
    Case-control study49 participantsProductivity Boost forVitamin B6
  145. Influence of folic acid on postprandial endothelial dysfunction.
    Wilmink HW; Stroes ES; Erkelens WD; Gerritsen WB; Wever R; Banga JD; Rabelink TJ · Arteriosclerosis, thrombosis, and vascular biology · 2000
    Randomized trial20 participantsStress Relief forFolate
  146. The effects of folate supplementation on inflammatory factors and biomarkers of oxidative stress in overweight and obese women with polycystic ovary syndrome: a randomized, double-blind, placebo-controlled clinical trial.
    Bahmani F; Karamali M; Shakeri H; Asemi Z · Clinical endocrinology · 2015
    Randomized trial69 participantsStress Relief forFolate
  147. Folate for depressive disorders: systematic review and meta-analysis of randomized controlled trials.
    Taylor MJ; Carney SM; Goodwin GM; Geddes JR · Journal of psychopharmacology (Oxford, England) · 2004
    Meta-analysis247 participants3 studies pooledStress Relief forFolate
  148. Depressive symptoms and associated factors among women preparing for pregnancy: a population-based study from the Seoul metropolitan preconception health management program.
    Lee HJ; Shin W; Han JY; Choi HZ; Kang J; Woo SY · BMC women's health · 2026
    Cross-sectional study14,004 participantsStress Relief forFolate
  149. Folate administration decreases oxidative status and blood pressure in postmenopausal women.
    Cagnacci A; Cannoletta M; Xholli A; Piacenti I; Palma F; Palmieri B · European journal of nutrition · 2016
    Randomized trial30 participantsStress Relief forFolate
  150. Effects of vitamin B12 supplementation on oxidative stress markers and pro-inflammatory cytokines during pregnancy and postpartum among Bangladeshi mother-child pairs.
    Siddiqua TJ; Akhtar E; Haq MA; Shahab-Ferdows S; Hampel D; Islam S; Ahmed T; Allen LH; Raqib R · BMC nutrition · 2024
    Randomized trial68 participantsStress Relief forVitamin B12
  151. Folate, vitamin B12, homocysteine, and the MTHFR 677C->T polymorphism in anxiety and depression: the Hordaland Homocysteine Study.
    Bjelland I; Tell GS; Vollset SE; Refsum H; Ueland PM · Archives of general psychiatry · 2003
    Cross-sectional study5,948 participantsStress Relief forVitamin B12
  152. Vitamin B12 deficiency and neuropsychiatric symptoms in Lebanon: A cross-sectional study of vegans, vegetarians, and omnivores.
    Al Jassem O; Kheir K; Ismail A; Abou-Abbas L; Masri A; Haddad C; Nasrallah K; El Masry J · PloS one · 2024
    Cross-sectional study483 participantsStress Relief forVitamin B12
  153. A Systematic Review and Meta-Analysis of B Vitamin Supplementation on Depressive Symptoms, Anxiety, and Stress: Effects on Healthy and 'At-Risk' Individuals
    Lauren M. Young, Andrew Pipingas, David J. White, Sarah Gauci, Andrew Scholey · Nutrients · 2019
    Meta-analysis12 studies pooledStress Relief forVitamin B12
  154. Effects of vitamin and mineral supplementation on stress, mild psychiatric symptoms, and mood in nonclinical samples: a meta-analysis
    Stephen J. Long, David Benton · Psychosomatic Medicine · 2013
    Meta-analysis8 studies pooledStress Relief forVitamin B12
  155. Effect of magnesium and vitamin B6 supplementation on mental health and quality of life in stressed healthy adults: Post-hoc analysis of a randomised controlled trial.
    Noah L; Dye L; Bois De Fer B; Mazur A; Pickering G; Pouteau E · Stress and health : journal of the International Society for the Investigation of Stress · 2021
    Randomized trialStress Relief forVitamin B6
  156. RENAL PROTECTIVE EFFECT AND CLINICAL ANALYSIS OF VITAMIN B 6 IN PATIENTS WITH SEPSIS.
    Wang Y; Lu WL; Feng WM; Xu W; Liu LH; He LM · Shock (Augusta, Ga.) · 2024
    Randomized trial128 participantsStress Relief forVitamin B6
  157. Superiority of magnesium and vitamin B6 over magnesium alone on severe stress in healthy adults with low magnesemia: A randomized, single-blind clinical trial.
    Pouteau E; Kabir-Ahmadi M; Noah L; Mazur A; Dye L; Hellhammer J; Pickering G; Dubray C · PloS one · 2019
    Randomized trial264 participantsStress Relief forVitamin B6
  158. Associations between dietary intake of B-vitamins and psychological disorders among Iranian women: a cross-sectional study.
    Mozaffari H; Darooghegi Mofrad M; Surkan PJ; Askari M; Azadbakht L · Public health nutrition · 2021
    Cross-sectional study447 participantsStress Relief forVitamin B6