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B-50 Complex 50 mg

Source Naturals
4.7
★ ★ ★ ★ ★
(2757 ratings)
Vitamin B6 50 mg
PABA 30 mg
Niacin 50 mg
Riboflavin 50 mg
Choline 50 mg
Vitamin B5 100 mg
Thiamin 50 mg
Product Image
Score75
Complete and easy to assess, but conventional forms and high B6 and folic acid amounts limit its everyday appeal.
How scoring works
Quantity:50 Tablet(s) • (50 servings)
Goals:
General Health
Energy
Stress Relief
Metabolism Boost

Score 75

Complete and easy to assess, but conventional forms and high B6 and folic acid amounts limit its everyday appeal.
How scoring works

Also available as

1 option
100 servings 1 Tablet(s) • 100 Tablet(s) • 100 servings $11.75 ($0.11 per serving)
$5.88($0.11 per serving)
Pure Formulas
$ 5.88
Vitacost
$ 6.21
iHerb
$ 6.21
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Analysis

The tablet covers every major B vitamin and adds choline, inositol, and PABA. It is most useful for filling broad B-vitamin gaps rather than creating stimulation or directly raising metabolic rate.

Folic acid, cyanocobalamin, pyridoxine hydrochloride, and standard riboflavin are basic forms. Choline and biotin are modest for focused cognitive or hair use, while the formula omits the structural nutrients and minerals needed for those goals.

Clear amounts and a simple tablet format are practical strengths. The vitamin B6 and folic acid amounts deserve care during long-term use, especially when other supplements or fortified foods are involved.

Who is it for
  • Adults seeking an economical high-potency B-complex
  • Users addressing broad B-vitamin gaps
  • People comfortable with a tablet
Best for
  • Broad B-vitamin supplementation
  • Normal energy metabolism
  • Short-term nutrient repletion

Pros

  • Provides the full B-vitamin group
  • Clearly lists every active amount
  • Uses non-flushing niacinamide
  • Simple one-tablet serving

Cons

  • Uses folic acid and cyanocobalamin
  • Uses standard pyridoxine
  • Biotin and choline are modest for targeted goals
  • PABA and inositol add limited functional depth

Warnings

  • The 50 mg vitamin B6 amount may contribute to tingling, numbness, or nerve injury with prolonged daily use, particularly when combined with other B6 products.
  • The 800 mcg folic acid amount is high for routine use and may be excessive alongside fortified foods or another folate supplement.

Nutrient quality

64 Moderate impact

The formula covers the main B vitamins, but most use basic forms. Vitamin B6 and folic acid are unnecessarily high for routine long-term use.

Ingredient transparency

80 High impact

Every listed active has a specific amount and no blend is hidden. Daily directions and a complete inactive-ingredient list are not supplied.

Customer satisfaction

71 High impact

The aggregate rating is very strong and backed by substantial volume. No detailed experience reports are supplied, so recurring complaints and purpose fit remain uncertain.

Value for money

86 Highest impact

Broad coverage is offered at an unusually low serving cost. Excessive vitamin amounts and basic forms reduce quality but not the raw cost advantage.

Report analysis

Goals

General Health
General Health
Impact
High effect
B+ Goal FitC Strength of SupportC+ CoverageB+ Formula Quality
Folate · 800 mcgVitamin B12 · 50 mcg

A concentrated B-complex supports energy metabolism and helps cover essential B-vitamin needs. The formula is transparent and provides every major B vitamin in a simple tablet.

Folic acid and cyanocobalamin are less preferred forms, and the vitamin B6 amount is high for routine long-term use. Broader general-health coverage remains limited because vitamins D, C, minerals, and essential fats are absent.

Study evidence
Folate Supportive 80 studies
Energy
Energy
Impact
High effect
B- Goal FitC Strength of SupportC CoverageB Formula Quality
Vitamin B5 · 100 mgRiboflavin · 50 mgThiamin · 50 mgVitamin B12 · 50 mcg

A broad B-complex supports metabolic fuel use, red-blood-cell formation, and nervous-system function. It is most likely to help fatigue related to inadequate B-vitamin intake rather than provide immediate stimulation.

The label gives exact amounts, but folic acid, cyanocobalamin, pyridoxine, and other conventional forms are basic choices. The substantial pyridoxine amount may raise neuropathy risk with long-term daily use, especially when combined with other vitamin B6 sources.

Stress Relief
Stress Relief
Impact
High effect
C Goal FitB- Strength of SupportD+ CoverageA- Formula Quality
Folate · 800 mcgVitamin B12 · 50 mcgVitamin B6 · 50 mg

B vitamins support normal nervous-system metabolism but do not directly create a calming effect. Several nutrients are supplied in substantial amounts and may help when low status contributes to fatigue or poor stress tolerance.

The formula lacks a well-supported adaptogen, calming amino acid, or sleep ingredient. The concentrated vitamin B6 amount makes prolonged daily use less suitable without a clear need.

Study evidence
Vitamin B6 Supportive 10 studies
Metabolism Boost
Metabolism Boost
Impact
Moderate effect
D- Goal FitD+ Strength of SupportD- CoverageB+ Formula Quality
Biotin · 50 mcgNiacin · 50 mgVitamin B12 · 50 mcgRiboflavin · 50 mgThiamin · 50 mgVitamin B5 · 100 mgVitamin B6 · 50 mg

B vitamins support cellular energy metabolism, but they do not meaningfully raise metabolic rate in people whose needs are already met. The formula is best suited to correcting nutrient gaps rather than thermogenesis or fat oxidation.

The 50 mg B-vitamin pattern is substantial, yet no caffeine, green tea, carnitine, chromium, iodine, or CoQ10 is included. Basic pyridoxine and cyanocobalamin forms limit quality and do not add a targeted metabolic mechanism.

Study evidence
Vitamin B6 Supportive 16 studies

Ingredients

IngredientAmount per serving
Thiamine (Vitamin B1)
 50 mg
Riboflavin (Vitamin B2)
 50 mg
Niacinamide
50 mg
Vitamin B6 (Pyridoxine Hydrochloride)
 50 mg
Folate (Folic Acid)
 800 mcg
Vitamin B12 (Cyanocobalamin)
 50 mcg
Biotin
50 mcg
Pantothenic Acid (Calcium D-Pantothenate)
 100 mg
Choline (Choline Bitartrate)
 50 mg
Inositol
50 mg
PABA
30 mg
Adults 18–50
Report overview
Vitamin B6 (Pyridoxine Hydrochloride) · 50 mg OverallScore86
C+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

The 50 mg dose matches the intended range, while pyridoxine hydrochloride is less metabolically ready than P-5-P. Riboflavin supports conversion, and the single-tablet serving keeps use simple. The B-complex is very economical and the provided ingredient data shows no targeted additive concern.

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PABA · 30 mg OverallScore84
A Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyB- Value

Clearly identified PABA delivers a standard high-potency B-complex dose. Immediate release is appropriate at this amount, while missing excipient details leave additive cleanliness uncertain. The one-tablet serving is convenient, and the normalized PABA cost offers moderate value.

View ingredientView products
Niacin · 50 mg OverallScore76
B- Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyC Value

Niacinamide is clearly identified at an amount that fits the preferred range for a B-complex. The tablet has no specified release technology, but the disclosed form has low flush potential. Its serving cost offers moderate value under the standard niacin thresholds.

View ingredientView products
Loading alternative details
81 Performance

Coenzyme B-Complex Caps

Country Life
<p>Multiple coenzyme forms improve the quality of riboflavin, folate, vitamin B12, and other B nutrients compared with a mostly conventional formula. Vitamin B6 remains elevated, and choline is only modestly dosed.</p>
79 Performance

CoEnzyme B-Complex

KAL
<p>Active and conventional B-vitamin forms provide broad coverage with a more restrained vitamin B6 amount than many B-50 or B-75 formulas. The chewable format adds carbohydrates, and the mixed vitamin B12 strategy is less efficient than a fully active approach.</p>
73 Performance

Glycogenics

Metagenics
<p>Methylfolate and methylcobalamin strengthen form quality within a broad vitamin formula. High niacin and pyridoxine remain less balanced for routine use, and the premium serving cost is difficult to justify.</p>
77 Budget

B-50

NOW
<p>A large supply provides the full standard B-vitamin pattern at lower serving cost. Basic forms and a high vitamin B6 amount remain important limitations for sustained daily use.</p>
77 Budget

B-50 Complex 50 mg

Source Naturals
<p>Broad B-vitamin coverage comes at very favorable serving value while preserving the original energy-metabolism focus. High folate and vitamin B6 amounts still reduce dose balance for routine daily use.</p>
76 Budget

Hi Potency B Complex

Natural Factors
<p>A complete high-potency B-complex offers broad nutritional coverage at a low or comparable serving cost. High folate and vitamin B6 remain unnecessarily aggressive for unsupervised long-term use.</p>
79 Value

Basic-B Caps

Country Life
<p>A complete, fully disclosed B-complex delivers useful metabolic coverage at strong serving value. Most forms are conventional and vitamin B6 is still higher than necessary, but there is no hidden active blend.</p>
77 Value

B-50

NOW
<p>Broad B-vitamin amounts and a large supply provide strong value for focused energy-metabolism support. Basic forms and high vitamin B6 make the formula better suited to limited or need-based use than indefinite daily use.</p>
75 Value

B-Complex 50

Bluebonnet
<p>A complete B-vitamin pattern provides focused nutritional coverage at a reasonable serving cost. Basic forms and high vitamin B6 limit long-term appeal, but the formula remains a practical value alternative.</p>
Report alternatives

Sources

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

  1. Optimum nutrition: thiamin, biotin and pantothenate.
    Bender DA · The Proceedings of the Nutrition Society · 1999
    Narrative reviewMetabolism Boost forVitamin B5
  2. Physiological and performance responses to supplementation with thiamin and pantothenic acid derivatives.
    Webster MJ · European journal of applied physiology and occupational physiology · 1998
    Randomized trial6 participantsMetabolism Boost forVitamin B5
  3. Apolipoprotein E and sex modulate fatty acid metabolism in a prospective observational study of cognitive decline.
    González-Domínguez R; Castellano-Escuder P; Lefèvre-Arbogast S; Low DY; Du Preez A; Ruigrok SR; Lee H; Helmer C; Pallàs M; Urpi-Sarda M; Sánchez-Pla A; Korosi A; Lucassen PJ; Aigner L; Manach C; Thuret S; Samieri C; Andres-Lacueva C · Alzheimer's research & therapy · 2022
    Observational studyMetabolism Boost forVitamin B5
  4. Exploring auxotrophy and engineering vitamin B6 prototrophy in the acetogen Clostridium sp. AWRP.
    Kwon SJ; Lee J; Lee HS · Applied and environmental microbiology · 2024
    Clinical trialMetabolism Boost forVitamin B5
  5. Pantothenate synthetase is essential but not limiting for pantothenate biosynthesis in Arabidopsis.
    Jonczyk R; Ronconi S; Rychlik M; Genschel U · Plant molecular biology · 2008
    OtherMetabolism Boost forVitamin B5
  6. Metabolic profiles of exercise in patients with McArdle disease or mitochondrial myopathy.
    Delaney NF; Sharma R; Tadvalkar L; Clish CB; Haller RG; Mootha VK · Proceedings of the National Academy of Sciences of the United States of America · 2018
    OtherMetabolism Boost forVitamin B5
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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 participantsStress Relief forVitamin B6
  19. 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
  20. 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
  21. 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