Product Image

Energy

NOW
4.5
★ ★ ★ ★ ★
(2004 ratings)
Iodine 150 mcg
Chromium 200 mcg
Niacin 25 mg
Thiamin 8 mg
Riboflavin 10 mg
Rhodiola
Guarana
Product Image
Score67
A broad energy blend combines stimulant botanicals, B vitamins, adaptogens, and metabolic cofactors, but several key actives are lightly dosed or poorly characterized. Amounts are mostly disclosed and the serving appears economical, while unknown total caffeine and licorice create practical concerns for sensitive users.
How scoring works
Quantity:90 Capsule(s) • (45 servings)
Goals:
Metabolism Boost

Score 67

A broad energy blend combines stimulant botanicals, B vitamins, adaptogens, and metabolic cofactors, but several key actives are lightly dosed or poorly characterized. Amounts are mostly disclosed and the serving appears economical, while unknown total caffeine and licorice create practical concerns for sensitive users.
How scoring works
$15.66($0.34 per serving)
Daily Vita
$ 16.20
Pure Formulas
$ 15.66
iHerb
$ 17.14
Vitacost
$ 18.37
Report prices

Analysis

A broad energy blend combines stimulant botanicals, B vitamins, adaptogens, and metabolic cofactors, but several key actives are lightly dosed or poorly characterized. Amounts are mostly disclosed and the serving appears economical, while unknown total caffeine and licorice create practical concerns for sensitive users.

150 mcg falls within the preferred range for daily iodine support. Kelp provides a useful whole-food iodine source with more natural variability than an isolated salt.

The formula directly targets short-term metabolic stimulation with guarana, green tea, yerba mate, and cayenne. B vitamins, chromium, iodine, and adaptogenic herbs add broader energy and metabolic support.

Who is it for
  • Adults focused on metabolism boost
  • Adults focused on mental focus
  • Adults focused on energy
Best for
  • Iodine supplementation
  • Chromium supplementation
  • Niacin supplementation

Pros

  • Provides a disclosed 200.00mg of green tea extract
  • Provides a disclosed 100.00mg of rhodiola extract
  • Provides a disclosed 150.00mg of organic eleuthero

Cons

  • Total caffeine is not disclosed
  • Several actives are lightly dosed or poorly characterized
  • Licorice complicates use for blood-pressure-sensitive users

Warnings

  • Unknown total caffeine may cause jitteriness, faster heartbeat, anxiety, or sleep disruption.
  • Licorice may raise blood pressure or lower potassium, especially with diuretics or heart and blood-pressure medicines.
  • Combining the stimulant botanicals with other caffeine products can amplify cardiovascular and sleep effects.

Nutrient quality

62 Moderate impact

Chromium chelate and natural vitamin E are useful, while most botanical extracts lack active standardization. Several energy herbs receive material amounts, but rhodiola, coenzyme Q10, and alpha lipoic acid are modest.

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Ingredient transparency

72 High impact

Ingredient amounts are listed, but caffeine yield and most botanical standardizations are missing. Complete non-active ingredient details are not included in the supplied label data.

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Customer satisfaction

70 High impact

The supplied average rating provides limited high-level context. Detailed firsthand feedback is unavailable, so recurring complaints and purpose fit cannot be assessed.

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Value for money

63 Moderate impact

The moderate serving cost suits a broad energy blend, though uncertain standardization limits quality. Material stimulant herbs support value, while several small extras add little.

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Report analysis

Goals

Metabolism Boost
Metabolism Boost
Impact
High effect
A- Goal FitC Strength of SupportB+ CoverageB- Formula Quality
Niacin · 25 mgVitamin B12 · 100 mcgRiboflavin · 10 mgThiamin · 8 mgVitamin B5 · 10 mgVitamin B6 · 10 mgCoenzyme Q-10 · 10 mgGreen Tea · 200 mg

The formula directly targets short-term metabolic stimulation with guarana, green tea, yerba mate, and cayenne. B vitamins, chromium, iodine, and adaptogenic herbs add broader energy and metabolic support.

Botanical amounts are disclosed, but caffeine content and green tea standardization are not provided. Small coenzyme Q10 and alpha-lipoic acid amounts add little depth, while licorice standardization is also unclear.

Study evidence
Chromium Supportive 47 studies
Coenzyme Q-10 Disputed 11 studies
Green Tea Supportive 31 studies
Iodine Mixed 17 studies
Mental Focus
Mental Focus
Impact
Moderate effect
B Goal FitD Strength of SupportB- CoverageC- Formula Quality
Vitamin B6 · 10 mgVitamin B12 · 100 mcg

Stimulant botanicals and Rhodiola may raise alertness and help with mental stamina. Total caffeine is not stated, making the intensity difficult to predict.

Several adaptogens are underdosed or unstandardized, so caffeine is likely to drive most of the acute effect. Guarana, green tea, and yerba mate may cause restlessness or disturb sleep in caffeine-sensitive users.

Study evidence
Eleuthero Disputed 3 studies
Rhodiola Supportive 15 studies
Energy
Energy
Impact
Moderate effect
B Goal FitD Strength of SupportC+ CoverageC- Formula Quality
Iodine · 150 mcgVitamin B5 · 10 mgRiboflavin · 10 mgThiamin · 8 mgVitamin B12 · 100 mcgPotassium · 55 mgCoenzyme Q-10 · 10 mg

Guarana, green tea, yerba mate, B vitamins, and several adaptogens create a direct energy-oriented formula. The combination addresses alertness, metabolic cofactors, and stress resilience.

Total caffeine is not disclosed, while rhodiola, eleuthero, CoQ10, and several other actives are below strong targeted amounts. Stacking multiple caffeine sources may increase restlessness or disturb sleep, and licorice adds a blood-pressure concern for susceptible users.

Study evidence
Coenzyme Q-10 Supportive 32 studies
Eleuthero Disputed 3 studies
Guarana No effect 8 studies
Rhodiola Supportive 18 studies
Vitamin B12 Disputed 14 studies
Weight Loss
Weight Loss
Impact
Moderate effect
B- Goal FitD Strength of SupportC CoverageD- Formula Quality
Iodine · 150 mcgGreen Tea · 200 mg

Guarana, green tea, yerba mate, and cayenne create a stimulant and thermogenic strategy, while chromium and iodine add metabolic context. The total caffeine and EGCG amounts are not disclosed, making potency and stimulant exposure difficult to judge.

Rhodiola, eleuthero, and ginseng broaden stress-resilience coverage but are modestly dosed and incompletely standardized. The combined stimulant sources may worsen anxiety, raise heart rate, or disrupt sleep, while licorice may raise blood pressure in susceptible users.

Study evidence
Chromium No effect 24 studies
Green Tea Supportive 42 studies
Iodine Adverse 3 studies
Rhodiola Not classified

No linked studies yet.

General Health
Daily Energy Vitality
General Health
Impact
Moderate effect
C+ Goal FitD Strength of SupportC CoverageD+ Formula Quality
Vitamin B12 · 100 mcg

B vitamins and several adaptogenic or stimulant botanicals target perceived energy more than broad foundational nutrition. Some ingredients have reasonable evidence for alertness or stress-related fatigue, but several extract details and stimulant amounts are missing.

Rhodiola is below the usual focused range, while CoQ10 and alpha-lipoic acid appear too small to add much depth. Guarana, green tea, and yerba mate may also make the product unsuitable late in the day or for stimulant-sensitive users.

Study evidence
Rhodiola Supportive 7 studies
Cognitive Support
Cognitive Support
Impact
Moderate effect
C Goal FitD Strength of SupportC- CoverageD+ Formula Quality
Thiamin · 8 mgVitamin B6 · 10 mgVitamin B12 · 100 mcgGreen Tea · 200 mg

The energy formula offers moderate stimulation and fatigue support with limited cognitive depth. Rhodiola, gotu kola, energizing botanicals, B vitamins, and coenzyme Q10 touch alertness, stress fatigue, and cellular energy.

Rhodiola and coenzyme Q10 are lightly dosed, while the botanical extracts lack useful active-marker detail. The product may support short-term energy more than memory or sustained cognitive performance.

Study evidence
Rhodiola Supportive 7 studies

Ingredients

IngredientAmount per serving
Vitamin E (D-Alpha-Tocopheryl Succinate)
 10 mg
Thiamine (Thiamine Hydrochloride, Vitamin B1)
 8 mg
Riboflavin (Vitamin B2)
 10 mg
Niacin (Vitamin B3)
 25 mg
Vitamin B6 (Pyridoxine Hydrochloride)
 10 mg
Vitamin B12 (Cyanocobalamin)
 100 mcg
Pantothenic Acid (Calcium Pantothenate)
 10 mg
Iodine (organic Kelp)
 150 mcg
Chromium (Chromium Nicotinate Glycinate)
 200 mcg
Potassium (Potassium Aspartate)
 55 mg
Guarana extract
200 mg
Green Tea extract
200 mg
Panax ginseng
150 mg
organic Eleuthero
150 mg
Rhodiola extract
100 mg
Licorice
100 mg
Gotu Kola
100 mg
Yerba Mate extract
50 mg
Cayenne
50 mg
Alpha Lipoic Acid
15 mg
CoQ10
10 mg
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Vegetarian
Report overview
Iodine (organic Kelp) · 150 mcg OverallScore92
A- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value

150 mcg falls within the preferred range for daily iodine support. Kelp provides a useful whole-food iodine source with more natural variability than an isolated salt. The serving cost offers good value for an effective iodine dose.

View ingredientView products
Chromium (Chromium Nicotinate Glycinate) · 200 mcg OverallScore77
B- Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyB Value

Chromium nicotinate glycinate is an organic, well-absorbed form, but the label gives no branded source. The 200 mcg amount meets the target range, but a single listed weight leaves elemental content ambiguous and dose-adjusted value is favorable. Chromium may lower blood sugar, so people using insulin or sulfonylureas should monitor for hypoglycemia with their prescriber.

View ingredientView products
Niacin (Vitamin B3) · 25 mg OverallScore62
B+ Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyD- Value

A broad energy blend supplies a routine amount of vitamin B3, but the exact form is not disclosed. Standard capsule delivery offers no release advantage, and vitamin B3 is only one part of the formula. Guarana, green tea, and yerba mate may matter for stimulant-sensitive users, while licorice can be a concern for people managing high blood pressure.

View ingredientView products
Loading alternative details
70 Performance

Coenzymate B Complex Peppermint

Source Naturals
<p>Active B-vitamin forms and hydroxocobalamin provide more refined cofactor support for energy and mental performance. Duplicate totals, folic acid, and low CoQ10 weaken the formula, but the absence of an unclear stimulant blend improves predictability.</p>
84 Performance

Super B-Complex with Folic Acid plus Vitamin C

Nature's Bounty
<p>A broad B-complex uses sensible amounts for everyday energy metabolism and avoids the original undisclosed caffeine yield and licorice concern. Several forms are basic and high biotin can interfere with laboratory tests, but the formula is easier to use routinely.</p>
68 Performance

Energy Boost Delayed-Release

Swanson
<p>Multiple stimulant sources and eleuthero preserve a closer short-term alertness profile than a plain B-complex. The total caffeine load and extract standardization remain unclear, but the delayed-release design offers a more targeted energy alternative.</p>
80 Budget

B-Complex plus Vitamin C

21st Century
<p>A much lower serving cost provides vitamin C, thiamine, riboflavin, niacin, vitamin B6, and pantothenic acid for normal energy metabolism. Missing folate, vitamin B12, biotin, and the original stimulant botanicals make the effect less broad but more predictable.</p>
80 Budget

Super Vitamin B-Complex

Spring Valley
<p>Broad B-vitamin coverage supports normal energy pathways at a very low serving cost. Chemical forms are not disclosed and the formula lacks the original green tea, guarana, ginseng, and eleuthero, but it avoids an uncertain stimulant load.</p>
81 Budget

Super B-Complex

Nature Made
<p>Broad B vitamins with vitamin C deliver straightforward energy-metabolism support at a much lower serving cost. Very high thiamine and conventional folic acid, pyridoxine, and cyanocobalamin reduce refinement, while the stimulant-free formula may suit sensitive users better.</p>
73 Value

Diet Support

NOW
<p>Green tea, chromium, iodine, and forskolin align with energy, weight-management, and metabolism goals at a lower serving cost. Several supporting ingredients are modest or incomplete, and kelp iodine plus uva ursi reduce suitability for some users.</p>
79 Value

Super Vitamin B-Complex

Spring Valley
<p>Broad B-vitamin coverage offers reliable nutritional energy support at a very low serving cost. Missing chemical forms and high thiamine limit refinement, but the simple formula avoids the original uncertain caffeine exposure.</p>
76 Value

B Complex

INNATE Response Formulas
<p>Moderate B-vitamin amounts support energy metabolism without the aggressive dosing or unclear stimulant total found in the original. Conventional pyridoxine and cyanocobalamin remain, but the long supply and gentler profile create balanced value.</p>
Report alternatives

Sources

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

  1. Improved meta-analytic methods show no effect of chromium supplements on fasting glucose.
    Bailey CH · Biological trace element research · 2014
    Meta-analysis809 participants16 studies pooledMetabolism Boost forChromium
  2. Effects of green tea or green tea extract on insulin sensitivity and glycaemic control in populations at risk of type 2 diabetes mellitus: a systematic review and meta-analysis of randomised controlled trials.
    Wang X; Tian J; Jiang J; Li L; Ying X; Tian H; Nie M · Journal of human nutrition and dietetics : the official journal of the British Dietetic Association · 2015
    Meta-analysis510 participants7 studies pooledMetabolism Boost forGreen Tea
  3. Rhodiola rosea for mental and physical fatigue in nursing students: a randomized controlled trial.
    Punja S; Shamseer L; Olson K; Vohra S · PloS one · 2015
    Randomized trial48 participantsEnergy forRhodiola
  4. Effects of Acute Guarana (Paullinia cupana) Ingestion on Mental Performance and Vagal Modulation Compared to a Low Dose of Caffeine.
    Talik TN; Penna EM; Hack BP; Harp A; Millard-Stafford M · Nutrients · 2024
    Randomized trial20 participantsEnergy forGuarana
  5. U-Shaped Associations Between Urinary Iodine Concentration and the Prevalence of Metabolic Disorders: A Cross-Sectional Study.
    Jin M; Zhang Z; Li Y; Teng D; Shi X; Ba J; Chen B; Du J; He L; Lai X; Teng X; Li Y; Chi H; Liao E; Liu C; Liu L; Qin G; Qin Y; Quan H; Shi B; Sun H; Tang X; Tong N; Wang G; Zhang JA; Wang Y; Xue Y; Yan L; Yang J; Yang L; Yao Y; Ye Z; Zhang Q; Zhang L; Zhu J; Zhu M; Ning G; Mu Y; Zhao J; Teng W; Shan Z · Thyroid : official journal of the American Thyroid Association · 2021
    Cross-sectional study51,795 participantsMetabolism Boost forIodine
  6. Randomized controlled trial of Siberian ginseng for chronic fatigue.
    Hartz AJ; Bentler S; Noyes R; Hoehns J; Logemann C; Sinift S; Butani Y; Wang W; Brake K; Ernst M; Kautzman H · Psychological medicine · 2004
    Randomized trial96 participantsEnergy forEleuthero
  7. Energy level and fatigue after surgery for thyroid cancer: A population-based study of patient-reported outcomes.
    Hughes DT; Reyes-Gastelum D; Kovatch KJ; Hamilton AS; Ward KC; Haymart MR · Surgery · 2020
    Cohort study2,584 participantsEnergy forIodine
  8. 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
  9. Metabolic response to green tea extract during rest and moderate-intensity exercise.
    Hodgson AB; Randell RK; Boon N; Garczarek U; Mela DJ; Jeukendrup AE; Jacobs DM · The Journal of nutritional biochemistry · 2013
    Randomized trial27 participantsMetabolism Boost forGreen Tea
  10. Chromium supplementation in non-obese non-diabetic subjects is associated with a decline in insulin sensitivity.
    Masharani U; Gjerde C; McCoy S; Maddux BA; Hessler D; Goldfine ID; Youngren JF · BMC endocrine disorders · 2013
    Randomized trial31 participantsMetabolism Boost forChromium
  11. Purified dry extract of Paullinia cupana (guaraná) (PC-18) for chemotherapy-related fatigue in patients with solid tumors: an early discontinuation study.
    del Giglio AB; Cubero Dde I; Lerner TG; Guariento RT; de Azevedo RG; Paiva H; Goldman C; Carelli B; Cruz FM; Schindler F; Pianowski L; de Matos LL; del Giglio A · Journal of dietary supplements · 2014
    Randomized trial40 participantsEnergy forGuarana
  12. Scientific Opinion on the substantiation of a health claim related to Rhodiola rosea L. extract and reduction of mental fatigue pursuant to Article 13(5) of Regulation (EC) No 1924/2006.
    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) · EFSA journal. European Food Safety Authority · 2026
    Guideline / consensusEnergy forRhodiola
  13. Iodine deficiency and real-life supplementation ineffectiveness in Polish pregnant women and its impact on thyroid metabolism.
    Filipowicz D; Szczepanek-Parulska E; Mikulska-Sauermann AA; Karaźniewicz-Łada M; Główka FK; Szymanowski K; Ołtarzewski M; Schomburg L; Ruchała M · Frontiers in endocrinology · 2023
    Cross-sectional study91 participantsMetabolism Boost forIodine
  14. Association of radioactive iodine treatment with survivorship symptoms and primary care utilisation in women of reproductive age with thyroid cancer: a retrospective cohort study.
    Devanarayan P; Hartman M; Partin M · Family medicine and community health · 2026
    Cohort study10,882 participantsEnergy forIodine
  15. 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
  16. Evidence-based efficacy of adaptogens in fatigue, and molecular mechanisms related to their stress-protective activity.
    Panossian A; Wikman G · Current clinical pharmacology · 2009
    Narrative reviewEnergy Mental Focus forEleuthero Cognitive Support Mental Focus forRhodiola
  17. The Effects of Supplementation with Chromium on Insulin Resistance Indices in Women with Polycystic Ovarian Syndrome: A Systematic Review and Meta-Analysis of Randomized Clinical Trials.
    Heshmati J; Omani-Samani R; Vesali S; Maroufizadeh S; Rezaeinejad M; Razavi M; Sepidarkish M · Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme · 2018
    Meta-analysis268 participants5 studies pooledMetabolism Boost forChromium
  18. Rhodiola rosea for physical and mental fatigue: a systematic review.
    Ishaque S; Shamseer L; Bukutu C; Vohra S · BMC complementary and alternative medicine · 2013
    Systematic review11 studies pooledEnergy forRhodiola
  19. Effect of green tea on glucose control and insulin sensitivity: a meta-analysis of 17 randomized controlled trials.
    Liu K; Zhou R; Wang B; Chen K; Shi LY; Zhu JD; Mi MT · The American journal of clinical nutrition · 2013
    Meta-analysis1,133 participants17 studies pooledMetabolism Boost forGreen Tea
  20. Iodine Supplementation Decreases Hypercholesterolemia in Iodine-Deficient, Overweight Women: A Randomized Controlled Trial.
    Herter-Aeberli I; Cherkaoui M; El Ansari N; Rohner R; Stinca S; Chabaa L; von Eckardstein A; Aboussad A; Zimmermann MB · The Journal of nutrition · 2015
    Randomized trial163 participantsMetabolism Boost forIodine
  21. Dietary supplements and fatigue in patients with breast cancer: a systematic review.
    Pereira PTVT; Reis AD; Diniz RR; Lima FA; Leite RD; da Silva MCP; Guerra RNM; de Moraes Vieira ÉB; Garcia JBS · Breast cancer research and treatment · 2019
    Systematic review932 participants8 studies pooledEnergy forGuarana
  22. 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
  23. Health-Related Quality of Life in Differentiated Thyroid Cancer Survivors: A Cross-Sectional Study From Turkey.
    Gültekin A; Kahraman MY; Şengöz T; Şimşek FS · Head & neck · 2026
    Cross-sectional study202 participantsEnergy forIodine
  24. Green tea extract ingestion, fat oxidation, and glucose tolerance in healthy humans.
    Venables MC; Hulston CJ; Cox HR; Jeukendrup AE · The American journal of clinical nutrition · 2008
    Randomized trial23 participantsMetabolism Boost forGreen Tea
  25. Elevated intakes of supplemental chromium improve glucose and insulin variables in individuals with type 2 diabetes.
    Anderson RA; Cheng N; Bryden NA; Polansky MM; Cheng N; Chi J; Feng J · Diabetes · 1997
    Randomized trial180 participantsMetabolism Boost forChromium
  26. The Effect of Short-Term Rhodiola rosea Supplementation on Simulated Game Time, Perceived Fatigue, and Performance in Basketball Players.
    Wang J; Zhao H; Yu L; Zhao K; Jiang W; Liu S; Dai J; Xu L; Sun P; Yun H; Liu C · Nutrients · 2025
    Randomized trial48 participantsEnergy forRhodiola
  27. The relationship between excessive iodine during pregnancy and adverse pregnancy complications.
    Li S; Zha H; Cui Y; Sun L; Yu L; Yuan Q · Endocrine · 2025
    Cohort study595 participantsMetabolism Boost forIodine
  28. Effectiveness of guaraná (Paullinia cupana) for postradiation fatigue and depression: results of a pilot double-blind randomized study.
    da Costa Miranda V; Trufelli DC; Santos J; Campos MP; Nobuo M; da Costa Miranda M; Schlinder F; Riechelmann R; del Giglio A · Journal of alternative and complementary medicine (New York, N.Y.) · 2009
    Randomized trial36 participantsEnergy forGuarana
  29. Chromium effects on glucose tolerance and insulin sensitivity in persons at risk for diabetes mellitus.
    Ali A; Ma Y; Reynolds J; Wise JP; Inzucchi SE; Katz DL · Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists · 2011
    Randomized trial59 participantsMetabolism Boost forChromium
  30. A 60-Day Green Tea Extract Supplementation Counteracts the Dysfunction of Adipose Tissue in Overweight Post-Menopausal and Class I Obese Women.
    Rondanelli M; Gasparri C; Perna S; Petrangolini G; Allegrini P; Fazia T; Bernardinelli L; Cavioni A; Mansueto F; Oberto L; Patelli Z; Tartara A; Riva A · Nutrients · 2022
    Randomized trial28 participantsMetabolism Boost forGreen Tea
  31. Effects of Rhodiola rosea on Physical and Decision-Making Performance in Football Players: A Randomised Controlled Trial.
    Dou Y; Wang Y; Zhang W; Jiang Y; Zhang J; Yang T; Han Z; Li Y; Liu C; Ren D · Nutrients · 2026
    Randomized trial24 participantsEnergy Mental Focus forRhodiola
  32. Effect of oral iodized oil on thyroid size and thyroid hormone metabolism in children with concurrent selenium and iodine deficiency.
    Zimmermann MB; Adou P; Torresani T; Zeder C; Hurrell RF · European journal of clinical nutrition · 2000
    Single-arm trial51 participantsMetabolism Boost forIodine
  33. Placebo-Controlled, Double-Blind, Randomized Study of a Dry Guarana Extract in Patients with Head and Neck Tumors Undergoing Chemoradiotherapy: Effects on Fatigue and Quality of Life.
    Martins SPDS; Ferreira CL; Del Giglio A · Journal of dietary supplements · 2019
    Randomized trial60 participantsEnergy forGuarana
  34. Chromium picolinate supplementation attenuates body weight gain and increases insulin sensitivity in subjects with type 2 diabetes.
    Martin J; Wang ZQ; Zhang XH; Wachtel D; Volaufova J; Matthews DE; Cefalu WT · Diabetes care · 2006
    Randomized trial37 participantsMetabolism Boost Weight Loss forChromium
  35. Metabolic response to epigallocatechin-3-gallate in relapsing-remitting multiple sclerosis: a randomized clinical trial.
    Mähler A; Steiniger J; Bock M; Klug L; Parreidt N; Lorenz M; Zimmermann BF; Krannich A; Paul F; Boschmann M · The American journal of clinical nutrition · 2015
    Randomized trial18 participantsMetabolism Boost forGreen Tea
  36. The Effect of Acute Rhodiola rosea Ingestion on Exercise Heart Rate, Substrate Utilisation, Mood State, and Perceptions of Exertion, Arousal, and Pleasure/Displeasure in Active Men.
    Duncan MJ; Clarke ND · Journal of sports medicine (Hindawi Publishing Corporation) · 2015
    Clinical trial10 participantsEnergy forRhodiola
  37. Serum Iodine Concentration as a Biomarker for Individual Iodine Nutrition and Thyroid Function in Pregnant Women: A Cross-Sectional Study in Hubei Province.
    Xu M; Dai X; Wang Z; Guo C; Zhang B; Guo H · Public health nutrition · 2026
    Cross-sectional study1,197 participantsMetabolism Boost forIodine
  38. Comparison of nutritional supplements in improving glycolipid metabolism and endocrine function in polycystic ovary syndrome: a systematic review and network meta-analysis.
    Hu X; Wang W; Su X; Peng H; Tan Z; Li Y; Huang Y · PeerJ · 2023
    Meta-analysis2,362 participants41 studies pooledMetabolism Boost forChromium Metabolism Boost forCoenzyme Q-10
  39. Effect of Acute and Chronic Dietary Supplementation with Green Tea Catechins on Resting Metabolic Rate, Energy Expenditure and Respiratory Quotient: A Systematic Review.
    Rondanelli M; Riva A; Petrangolini G; Allegrini P; Perna S; Faliva MA; Peroni G; Naso M; Nichetti M; Perdoni F; Gasparri C · Nutrients · 2021
    Systematic review499 participants15 studies pooledMetabolism Boost forGreen Tea
  40. Rhodiola rosea in Subjects with Prolonged or Chronic Fatigue Symptoms: Results of an Open-Label Clinical Trial.
    Lekomtseva Y; Zhukova I; Wacker A · Complementary medicine research · 2019
    Single-arm trial100 participantsEnergy General Health forRhodiola
  41. Urinary Iodine Concentration and Thyroid Hormone Metabolism in Pregnant Women and Neurodevelopment in Their Children: A Longitudinal Canadian Birth Cohort.
    Berghuis SA; Hall M; Krzeczkowski JE; Goodman CV; Chevrier J; Ayotte P; Lanphear B; Till C · Nutrients · 2025
    Cohort study1,501 participantsMetabolism Boost forIodine
  42. [Chromium supplementation in patients with type 2 diabetes and high risk of type 2 diabetes: a meta-analysis of randomized controlled trials].
    San Mauro-Martin I; Ruiz-León AM; Camina-Martín MA; Garicano-Vilar E; Collado-Yurrita L; Mateo-Silleras Bd; Redondo Del Río Mde P · Nutricion hospitalaria · 2017
    Meta-analysis13 studies pooledMetabolism Boost forChromium
  43. Epigallocatechin-3-gallate and postprandial fat oxidation in overweight/obese male volunteers: a pilot study.
    Thielecke F; Rahn G; Böhnke J; Adams F; Birkenfeld AL; Jordan J; Boschmann M · European journal of clinical nutrition · 2011
    Randomized trial10 participantsMetabolism Boost forGreen Tea
  44. Combined Rhodiola rosea and eccentric training boost endurance performance and lower-limb reactive strength in recreationally active women.
    Wang IL; Su Y; Zhang L; Tang M; Chen YM · Frontiers in physiology · 2025
    Randomized trial30 participantsEnergy forRhodiola
  45. A study on the differences in urinary iodine and serum iodine in relation to children's iodine nutrition and lipids.
    Zhang Y; Xu L; Wang L; Gao H; Hao J; Dong L; Qiu L; Wang J; Yan S; Liu L · Lipids in health and disease · 2026
    Cross-sectional studyMetabolism Boost forIodine
  46. Systematic review and meta-analysis of the efficacy and safety of chromium supplementation in diabetes.
    Suksomboon N; Poolsup N; Yuwanakorn A · Journal of clinical pharmacy and therapeutics · 2015
    Meta-analysis25 studies pooledMetabolism Boost forChromium
  47. Effects of timing of acute catechin-rich green tea ingestion on postprandial glucose metabolism in healthy men.
    Takahashi M; Ozaki M; Miyashita M; Fukazawa M; Nakaoka T; Wakisaka T; Matsui Y; Hibi M; Osaki N; Shibata S · The Journal of nutritional biochemistry · 2020
    Randomized trial17 participantsMetabolism Boost forGreen Tea
  48. The Impact of Rhodiola Rosea Extract on Strength Performance in Alternative Bench-Press and Bench-Pull Exercises Under Resting and Mental Fatigue Conditions: A Randomized, Triple-Blinded, Placebo-Controlled, Crossover Trial.
    Marcos-Frutos D; Leban Ž; Li Z; Zhang X; Lara PM; Alix-Fages C; Jiménez-Martínez P; Zebboudji N; Caillet A; Redondo B; Vera J; Janicijevic D; García-Ramos A · Nutrients · 2025
    Randomized trial18 participantsEnergy forRhodiola
  49. Serum Manganese, Cobalt, Copper, Zinc, Selenium, and Iodine Levels, and the Incidence of Type 2 Diabetes: A Nested Case-control Study.
    Ito A; Yamamoto S; Iwai-Shimada M; Kobayashi Y; Isobe T; Iwai K; Nakayama SF; Konishi M; Watanabe Y; Yamamoto S; Nakagawa T; Yamazaki S; Mizoue T · Biological trace element research · 2026
    Case-control study936 participantsMetabolism Boost forIodine
  50. Chromium picolinate does not improve key features of metabolic syndrome in obese nondiabetic adults.
    Iqbal N; Cardillo S; Volger S; Bloedon LT; Anderson RA; Boston R; Szapary PO · Metabolic syndrome and related disorders · 2009
    Randomized trial63 participantsMetabolism Boost forChromium
  51. Time-of-day-dependent effects of a green tea extract on postprandial glycemia and insulinemia in healthy adults: a randomized, controlled, double-blind, cross-over intervention.
    Sulaimani N; Rosbotham EJ; Warnock R; Polzella L; Judowski R; Nicolotti L; Houghton MJ; Williamson G; Bonham MP · Food & function · 2025
    Randomized trial14 participantsMetabolism Boost forGreen Tea
  52. Therapeutic effects and safety of Rhodiola rosea extract WS® 1375 in subjects with life-stress symptoms--results of an open-label study.
    Edwards D; Heufelder A; Zimmermann A · Phytotherapy research : PTR · 2012
    Single-arm trial101 participantsEnergy forRhodiola
  53. Iron status influences the efficacy of iodine prophylaxis in goitrous children in Côte d'Ivoire.
    Zimmermann MB · International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition · 2002
    OtherMetabolism Boost forIodine
  54. Effects of a Rhodiola rosea extract on mental resource allocation and attention: An event-related potential dual task study.
    Koop T; Dienel A; Heldmann M; Münte TF · Phytotherapy research : PTR · 2021
    Single-arm trial50 participantsCognitive Support forRhodiola
  55. Central additive effect of Ginkgo biloba and Rhodiola rosea on psychomotor vigilance task and short-term working memory accuracy.
    Al-Kuraishy HM · Journal of intercultural ethnopharmacology · 2016
    Clinical trial112 participantsCognitive Support forRhodiola
  56. Clinical evidence for the adaptogenic effects of Withania somnifera and Rhodiola rosea - A systematic review with molecular interpretation of psychometric outcomes.
    Łuszczak J; Kocki J · Annals of agricultural and environmental medicine : AAEM · 2026
    Systematic review19 studies pooledCognitive Support forRhodiola
  57. A randomised, double-blind, placebo-controlled, parallel-group study of the standardised extract shr-5 of the roots of Rhodiola rosea in the treatment of subjects with stress-related fatigue.
    Olsson EM; von Schéele B; Panossian AG · Planta medica · 2009
    Randomized trial60 participantsCognitive Support forRhodiola
  58. Effects of Coenzyme Q10 on Statin-Induced Myopathy: An Updated Meta-Analysis of Randomized Controlled Trials.
    Qu H; Guo M; Chai H; Wang WT; Gao ZY; Shi DZ · Journal of the American Heart Association · 2019
    Meta-analysis575 participants12 studies pooledEnergy forCoenzyme Q-10
  59. Coenzyme Q10 Supplementation in Athletes: A Systematic Review.
    Fernandes MSS; Fidelis DEDS; Aidar FJ; Badicu G; Greco G; Cataldi S; Santos GCJ; de Souza RF; Ardigò LP · Nutrients · 2026
    Systematic review16 studies pooledEnergy forCoenzyme Q-10
  60. Effectiveness of Coenzyme Q10 Supplementation for Reducing Fatigue: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
    Tsai IC; Hsu CW; Chang CH; Tseng PT; Chang KV · Frontiers in pharmacology · 2024
    Meta-analysis1,126 participants13 studies pooledEnergy forCoenzyme Q-10
  61. Antifatigue effects of coenzyme Q10 during physical fatigue.
    Mizuno K; Tanaka M; Nozaki S; Mizuma H; Ataka S; Tahara T; Sugino T; Shirai T; Kajimoto Y; Kuratsune H; Kajimoto O; Watanabe Y · Nutrition (Burbank, Los Angeles County, Calif.) · 2008
    Randomized trial17 participantsEnergy forCoenzyme Q-10
  62. Effect of coenzyme Q10 supplementation on fatigue: A systematic review of interventional studies.
    Mehrabani S; Askari G; Miraghajani M; Tavakoly R; Arab A · Complementary therapies in medicine · 2019
    Systematic review16 studies pooledEnergy forCoenzyme Q-10
  63. The effect of eight weeks of supplementation with Eleutherococcus senticosus on endurance capacity and metabolism in human
    J Kuo, K W Chen, I S Cheng, P H Tsai, Y J Lu, N Y Lee · Chinese Journal of Physiology · 2010
    Randomized trial9 participantsEnergy forEleuthero
  64. Combined Effects of Rhodiola Rosea and Caffeine Supplementation on Straight Punch Explosive Power in Untrained and Trained Boxing Volunteers: A Synergistic Approach.
    Tao B; Sun H; Li H; Xu Z; Xu Y; Chen L; Ma C; Zhang X; Yu L; Bao S; Liu C · Metabolites · 2025
    Randomized trial96 participantsEnergy forRhodiola
  65. 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
  66. 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
  67. 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
  68. 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
  69. Vitamin B12 Deficiency: Common Questions and Answers.
    Patel H; McGuirk R · American family physician · 2025
    Narrative reviewEnergy forVitamin B12
  70. Rhodiola rosea in stress induced fatigue--a double blind cross-over study of a standardized extract SHR-5 with a repeated low-dose regimen on the mental performance of healthy physicians during night duty.
    Darbinyan V; Kteyan A; Panossian A; Gabrielian E; Wikman G; Wagner H · Phytomedicine : international journal of phytotherapy and phytopharmacology · 2001
    Randomized trial56 participantsGeneral Health forRhodiola
  71. Actaea racemosa L. Is More Effective in Combination with Rhodiola rosea L. for Relief of Menopausal Symptoms: A Randomized, Double-Blind, Placebo-Controlled Study.
    Pkhaladze L; Davidova N; Khomasuridze A; Shengelia R; Panossian AG · Pharmaceuticals (Basel, Switzerland) · 2024
    Randomized trial220 participantsGeneral Health forRhodiola
  72. A double-blind, placebo-controlled pilot study of the stimulating and adaptogenic effect of Rhodiola rosea SHR-5 extract on the fatigue of students caused by stress during an examination period with a repeated low-dose regimen.
    Spasov AA; Wikman GK; Mandrikov VB; Mironova IA; Neumoin VV · Phytomedicine : international journal of phytotherapy and phytopharmacology · 2000
    Randomized trialGeneral Health forRhodiola
  73. [The effect of the preparation rodakson on the psychophysiological and physical adaptation of students to an academic load].
    Spasov AA; Mandrikov VB; Mironova IA · Eksperimental'naia i klinicheskaia farmakologiia · 2000
    Clinical trialGeneral Health forRhodiola
  74. Stimulating effect of adaptogens: an overview with particular reference to their efficacy following single dose administration.
    Panossian A; Wagner H · Phytotherapy research : PTR · 2005
    Narrative reviewMental Focus forEleuthero
  75. No benefit adding eleutherococcus senticosus to stress management training in stress-related fatigue/weakness, impaired work or concentration, a randomized controlled study.
    Schaffler K; Wolf OT; Burkart M · Pharmacopsychiatry · 2014
    Randomized trial144 participantsMental Focus forEleuthero
  76. The effectiveness and efficacy of Rhodiola rosea L.: a systematic review of randomized clinical trials.
    Hung SK; Perry R; Ernst E · Phytomedicine : international journal of phytotherapy and phytopharmacology · 2012
    Systematic review11 studies pooledMental Focus forRhodiola
  77. Dose-Response Effects of Short-Term Rhodiola rosea (Golden Root Extract) Supplementation on Anaerobic Exercise Performance and Cognitive Function in Resistance-Trained Athletes: A Randomized, Crossover, Double-Blind, and Placebo-Controlled Study.
    Koozehchian MS; Newton AT; Mabrey G; Bonness FM; Rafajlovska R; Naderi A · Nutrients · 2025
    Randomized trial27 participantsMental Focus forRhodiola
  78. Effects of Rhodiola rosea supplementation on mental performance, physical capacity, and oxidative stress biomarkers in healthy men.
    Jówko E; Sadowski J; Długołęcka B; Gierczuk D; Opaszowski B; Cieśliński I · Journal of sport and health science · 2022
    Randomized trial26 participantsMental Focus forRhodiola
  79. Chromium Supplementation and the Effects on Metabolic Status in Women with Polycystic Ovary Syndrome: A Randomized, Double-Blind, Placebo-Controlled Trial.
    Jamilian M; Asemi Z · Annals of nutrition & metabolism · 2016
    Randomized trial64 participantsMetabolism Boost forChromium
  80. A Comprehensive insight into the effect of chromium supplementation on oxidative stress indices in diabetes mellitus: A systematic review.
    Kooshki F; Tutunchi H; Vajdi M; Karimi A; Niazkar HR; Shoorei H; Pourghassem Gargari B · Clinical and experimental pharmacology & physiology · 2024
    Systematic review33 studies pooledMetabolism Boost forChromium
  81. Coenzyme Q10 supplementation improves adipokine profile in dyslipidemic individuals: a randomized controlled trial.
    Zhang P; Chen K; He T; Guo H; Chen X · Nutrition & metabolism · 2022
    Randomized trial101 participantsMetabolism Boost forCoenzyme Q-10
  82. Ubiquinol supplementation modulates energy metabolism and bone turnover during high intensity exercise.
    Diaz-Castro J; Mira-Rufino PJ; Moreno-Fernandez J; Chirosa I; Chirosa JL; Guisado R; Ochoa JJ · Food & function · 2021
    Randomized trial100 participantsMetabolism Boost forCoenzyme Q-10
  83. Effects of Coenzyme Q10 on Lipid, Glycemic, and Inflammatory Markers in Metabolic Disorders: A Systematic Review and Meta-Analysis.
    Zhang Z; Liu Z; Geng Y; Huang Y; Hu R; Li F; Song Y; Zhang M · Journal of diabetes research · 2026
    Meta-analysis3,422 participants64 studies pooledMetabolism Boost forCoenzyme Q-10
  84. The effect of coenzyme Q10 intake on metabolic profiles in women candidates for in-vitro fertilization: a randomised trial.
    Ahmadi Asouri S; Asemi R; Aghadavod E; Jamilian M · Annals of medicine and surgery (2012) · 2024
    Randomized trial40 participantsMetabolism Boost forCoenzyme Q-10
  85. Efficacy of a green tea extract rich in catechin polyphenols and caffeine in increasing 24-h energy expenditure and fat oxidation in humans.
    Dulloo AG; Duret C; Rohrer D; Girardier L; Mensi N; Fathi M; Chantre P; Vandermander J · The American journal of clinical nutrition · 1999
    Randomized trial10 participantsMetabolism Boost forGreen Tea
  86. Epigallocatechin gallate alleviates non-alcoholic fatty liver disease through the inhibition of the expression and activity of Dipeptide kinase 4.
    Yang M; Yan R; Sha R; Wang X; Zhou S; Li B; Zheng Q; Cao Y · Clinical nutrition (Edinburgh, Scotland) · 2024
    Randomized trialMetabolism Boost forGreen Tea
  87. Persistence of goiter despite oral iodine supplementation in goitrous children with iron deficiency anemia in Côte d'Ivoire.
    Zimmermann M; Adou P; Torresani T; Zeder C; Hurrell R · The American journal of clinical nutrition · 2000
    Non-randomized trial109 participantsMetabolism Boost forIodine
  88. The Influences of Chromium Supplementation on Metabolic Status in Patients with Type 2 Diabetes Mellitus and Coronary Heart Disease.
    Farrokhian A; Mahmoodian M; Bahmani F; Amirani E; Shafabakhsh R; Asemi Z · Biological trace element research · 2021
    Randomized trial64 participantsWeight Loss forChromium
  89. Chromium picolinate reduces insulin resistance in polycystic ovary syndrome: Randomized controlled trial.
    Ashoush S; Abou-Gamrah A; Bayoumy H; Othman N · The journal of obstetrics and gynaecology research · 2017
    Randomized trial100 participantsWeight Loss forChromium
  90. Chromium supplementation and polycystic ovary syndrome: A systematic review and meta-analysis.
    Fazelian S; Rouhani MH; Bank SS; Amani R · Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) · 2018
    Meta-analysis351 participants7 studies pooledWeight Loss forChromium
  91. Chromium picolinate balances the metabolic and clinical markers in nonalcoholic fatty liver disease: a randomized, double-blind, placebo-controlled trial.
    Kooshki F; Moradi F; Karimi A; Niazkar HR; Khoshbaten M; Maleki V; Pourghassem Gargari B · European journal of gastroenterology & hepatology · 2021
    Randomized trial46 participantsWeight Loss forChromium
  92. A green tea extract high in catechins reduces body fat and cardiovascular risks in humans.
    Nagao T; Hase T; Tokimitsu I · Obesity (Silver Spring, Md.) · 2007
    Randomized trial240 participantsWeight Loss forGreen Tea
  93. Green tea beverages enriched with catechins with a galloyl moiety reduce body fat in moderately obese adults: a randomized double-blind placebo-controlled trial.
    Kobayashi M; Kawano T; Ukawa Y; Sagesaka YM; Fukuhara I · Food & function · 2016
    Randomized trial126 participantsWeight Loss forGreen Tea
  94. Green tea catechin consumption enhances exercise-induced abdominal fat loss in overweight and obese adults.
    Maki KC; Reeves MS; Farmer M; Yasunaga K; Matsuo N; Katsuragi Y; Komikado M; Tokimitsu I; Wilder D; Jones F; Blumberg JB; Cartwright Y · The Journal of nutrition · 2009
    Randomized trial132 participantsWeight Loss forGreen Tea
  95. Effect of Decaffeinated Green Tea Polyphenols on Body Fat and Precocious Puberty in Obese Girls: A Randomized Controlled Trial.
    Xie L; Tang Q; Yao D; Gu Q; Zheng H; Wang X; Yu Z; Shen X · Frontiers in endocrinology · 2022
    Randomized trial62 participantsWeight Loss forGreen Tea
  96. Effectiveness of green tea on weight reduction in obese Thais: A randomized, controlled trial.
    Auvichayapat P; Prapochanung M; Tunkamnerdthai O; Sripanidkulchai BO; Auvichayapat N; Thinkhamrop B; Kunhasura S; Wongpratoom S; Sinawat S; Hongprapas P · Physiology & behavior · 2008
    Randomized trial60 participantsWeight Loss forGreen Tea
  97. Iodine deficiency among Belgian pregnant women not fully corrected by iodine-containing multivitamins: a national cross-sectional survey.
    Vandevijvere S; Amsalkhir S; Mourri AB; Van Oyen H; Moreno-Reyes R · The British journal of nutrition · 2013
    Cross-sectional study1,311 participantsWeight Loss forIodine
  98. Iodine Intake Estimated by 24 h Urine Collection in the Italian Adult Population: 2008-2012 Survey.
    Iacone R; Iaccarino Idelson P; Formisano P; Russo O; Lo Noce C; Donfrancesco C; Macchia PE; Palmieri L; Galeone D; di Lenarda A; Giampaoli S; Strazzullo P · Nutrients · 2021
    Cross-sectional study2,378 participantsWeight Loss forIodine
  99. Iodine intake in adults: Sociodemographic and dietary determinants from a National Health survey.
    Durán-Agüero S; Daga R · Clinical nutrition ESPEN · 2026
    Cross-sectional study1,230 participantsWeight Loss forIodine