Product Image

Glycemic Vibrance H

Vibrant Health
4.3
★ ★ ★ ★ ★
(130 ratings)
Iodine 150 mcg
Vitamin D 333 IU
L-Carnitine 83 mg
Fenugreek 500 mg
Chromium 100 mcg
Acetyl L-Carnitine 83 mg
Manganese 3 mg
Product Image
Score59
A broad glucose-focused formula with several recognizable botanicals, but the many low-dose supporting ingredients weaken its energy and single-ingredient value.
How scoring works
Quantity:90 Capsule(s) • (30 servings)
Goals:
Metabolism Boost
Testosterone Support

Score 59

A broad glucose-focused formula with several recognizable botanicals, but the many low-dose supporting ingredients weaken its energy and single-ingredient value.
How scoring works
$39.38($1.31 per serving)
Vitacost
$ 39.38
iHerb
$ 39.38
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Analysis

Glucose handling is the clearest focus. Branded fenugreek and bitter melon extracts sit beside gymnema, banaba, chromium, vanadium, and cinnamon, giving the blend more breadth than a single-ingredient option.

The long label spreads the serving thin. Acetyl L-carnitine, L-carnitine fumarate, taurine, N-acetyl cysteine, alpha-lipoic acid, and green tea extract are all modest compared with amounts commonly used in focused products.

Label detail is mixed: several botanicals name active markers, while iodine and manganese forms and the silymarin concentration are not clear. It fits a shopper seeking a multi-pathway metabolic blend, but not someone wanting strong carnitine, vitamin D, or milk thistle dosing.

Who is it for
  • Adults seeking broad nutritional support for glucose handling
  • People who prefer a capsule blend over several separate botanicals
  • Users who value named botanical markers on the label
Best for
  • Multi-pathway metabolism support
  • Fenugreek, bitter melon, gymnema, and banaba coverage
  • Users whose priority is glucose support rather than stimulant energy

Pros

  • Multiple glucose-related botanicals and minerals
  • Several botanical extracts disclose active markers
  • Iodine is supplied at a practical maintenance amount
  • Includes both acetyl and fumarate carnitine forms

Cons

  • Carnitines and mitochondrial cofactors are lightly dosed
  • Vitamin D amount is modest
  • Milk thistle standardization is incomplete
  • Long formula offers weak value for any single ingredient

Warnings

  • Bitter melon, gymnema, fenugreek, banaba, chromium, and vanadium may compound glucose-lowering medicines and increase the chance of low blood sugar.
  • The 150 mcg iodine serving may be unsuitable for some people with thyroid conditions because the iodine source is not further identified.
  • Fenugreek may cause digestive discomfort and can be unsuitable for people with a fenugreek or legume allergy.

Nutrient quality

57 Moderate impact

The formula uses several relevant botanicals and some identifiable active markers, but many secondary amounts are modest. The unusually large vanadium amount and crowded design are the main weaknesses.

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Ingredient transparency

63 Moderate impact

Many individual amounts are present, but grouped headings and duplicated form entries make the label harder to interpret. Missing excipient and full-use information leaves important disclosure gaps.

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Customer satisfaction

63 Moderate impact

The supplied average is favorable and the rating count is adequate. Complaint details and specific firsthand experiences are not available, so consistency and purpose fit remain uncertain.

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Value for money

52 Moderate impact

The wide botanical blend offers some utility, but several meaningful actives are too small for the cost. Crowding and label ambiguity further reduce its competitiveness.

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Report analysis

Goals

Metabolism Boost
Metabolism Boost
Impact
High effect
B Goal FitC Strength of SupportB CoverageC Formula Quality
Vitamin D · 333 IUZinc · 10 mgAcetyl L-Carnitine · 83 mgGreen Tea · 20 mg

Chromium, vanadium, bitter melon, gymnema, fenugreek, banaba, cinnamon, and iodine target glucose handling and thyroid-related metabolism across several pathways. Branded botanical extracts improve specificity, but many supporting ingredients are spread across low amounts.

Acetyl-L-carnitine, taurine, NAC, alpha-lipoic acid, and green tea are too small to provide strong mitochondrial or thermogenic depth. The glucose-focused ingredients may compound glucose-lowering medicines and increase the risk of low blood sugar.

Study evidence
Acetyl L-Carnitine Adverse 1 study
Chromium Supportive 47 studies
Green Tea Supportive 31 studies
Iodine Mixed 17 studies
Taurine Supportive 11 studies
Vanadium Supportive 7 studies
Testosterone Support
Testosterone Support
Impact
Moderate effect
C- Goal FitC- Strength of SupportC- CoverageD+ Formula Quality
Zinc · 10 mgVitamin D · 333 IU

Fenugreek, zinc, and vitamin D3 give the formula several plausible links to testosterone support. The combined fenugreek amount is substantial.

Fenugreek lacks hormone-relevant saponin standardization, while vitamin D and zinc are below preferred targeted amounts. Bitter melon, gymnema, fenugreek, banaba, and vanadium may increase low-blood-sugar risk with glucose-lowering medicines.

Study evidence
Fenugreek Supportive 12 studies
Vitamin D Supportive 56 studies
Zinc Disputed 7 studies

Ingredients

IngredientAmount per serving
Vitamin C (Ascorbyl Palmitate)
 13.33 mg
Vitamin D3 (organic Alfalfa, Sunflower Oil)
 333 IU
Iodine
150 mcg
Zinc Krebs Cycle Chelates
10 mg
Copper (Copper Sebacate)
 0.33 mg
Manganese
3 mg
Chromium (Chromium Arginate)
 100 mcg
Vanadium (Vanadyl Sulfate)
 6.67 mg
Ayurvedic Components
0 NP
Silbinol(R) Pterocarpus marsupium extract (Epicatechin, Pterostilbene)
 167 mg
Momordicin(R) Bitter Melon (Bitter Principles, Charantin)
 100 mg
Tinofolin(R) Tinospora cordifolia extract (Bitter Principles)
 100 mg
Tulsi (Ursolic Acid)
 67 mg
Gymnema sylvestre ext. (Gymnemic Acids)
 67 mg
Botanical Components
0 NP
Fenufibers(R) Trigonella foenum graecum extract (Fenugreek fibers)
 500 mg
Amla
167 mg
Blueberry fruit extract (Chlorogenic Acid)
 167 mg
Rockweed
100 mg
Fenumannans(R) Trigonella foenum graecum extract (Fenugreek fibers, Galactomannan)
 83 mg
Cinnamon bark powder
83 mg
Milk Thistle extract (Silymarin)
 50 mg
Green Tea extract (Catechins, EGCG, Polyphenols)
 20 mg
Banaba Ieaf extract (Corosolic Acid)
 16 mg
Alfalfa grass powder
3 mg
Support Factors
0 NP
Acetyl L Carnitine
83 mg
L-Carnitine Fumarate
83 mg
Taurine
83 mg
Arginine Monohydrochloride
50 mg
N-Acetyl-Cysteine
50 mg
Alpha-Lipoic Acid
33 mg
Ascorbyl Palmitate
33 mg
Adults 18–50
Report overview
Iodine · 150 mcg OverallScore60
D- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyF Value

The iodine amount is appropriate and explicitly listed, but its chemical form and source are missing. That omission leaves both absorption quality and marine purity uncertain. Capsules support efficient delivery, while the high serving cost offers poor value.

View ingredientView products
Vitamin D (organic Alfalfa, Sunflower Oil) · 333 IU OverallScore52
B+ Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyF Value

The label clearly identifies vitamin D3, a form that generally maintains vitamin D status more effectively than vitamin D2. The 333 IU serving is below the preferred daily range, and the capsule is not identified as an oil-based softgel despite a sunflower-oil form note. The cost per 1,000 IU is in the least favorable value band; no independent certification or batch-specific testing is provided.

View ingredientView products
L-Carnitine · 83 mg OverallScore44
B- Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyF Value

L-carnitine fumarate is well aligned with cardiovascular energy support. The listed amount provides only a small elemental dose once standard fumarate yield is applied. A high cost for the active amount further limits its usefulness as a dedicated carnitine option.

View ingredientView products
Loading alternative details
73 Budget

Diet Support

NOW
The supplied serving-cost data indicates a less expensive option than the original. Chromium, iodine, green tea, forskolin, and L-carnitine create a narrower metabolism formula, but uva ursi is a poor fit for prolonged routine use.
Report alternatives

Sources

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

  1. Testofen, a specialised Trigonella foenum-graecum seed extract reduces age-related symptoms of androgen decrease, increases testosterone levels and improves sexual function in healthy aging males in a double-blind randomised clinical study.
    Rao A; Steels E; Inder WJ; Abraham S; Vitetta L · The aging male : the official journal of the International Society for the Study of the Aging Male · 2017
    Randomized trial120 participantsTestosterone Support forFenugreek
  2. Effect of fenugreek extract supplement on testosterone levels in male: A meta-analysis of clinical trials.
    Mansoori A; Hosseini S; Zilaee M; Hormoznejad R; Fathi M · Phytotherapy research : PTR · 2020
    Meta-analysis4 studies pooledTestosterone Support forFenugreek
  3. 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
  4. 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
  5. 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
  6. Low Bioavailability and High TMAO Production: Novel Insights Into Acetylcarnitine and Carnitine Metabolism.
    Krims-Davis K; Ozola M; Razzivina V; Gukalova B; Konrade I; Dambrova M; Liepinsh E · Molecular nutrition & food research · 2025
    Randomized trialMetabolism Boost forAcetyl L-Carnitine
  7. 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
  8. 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
  9. 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
  10. [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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. Taurine supplementation as a therapeutic strategy for cellular senescence and chronic inflammation in long COVID: a systematic review and meta-analysis.
    Wang K; Ma CH; Khoramjoo M; Kung JY; Oudit GY · BMC infectious diseases · 2026
    Meta-analysis1,030 participants27 studies pooledMetabolism Boost forTaurine
  22. Effect of Long-Term Taurine Supplementation on the Lipid and Glycaemic Profile in Adults with Overweight or Obesity: A Systematic Review and Meta-Analysis.
    Sun Q; Wang J; Wang H; Yu H; Wan K; Ma F; Wang R · Nutrients · 2025
    Meta-analysis9 studies pooledMetabolism Boost forTaurine
  23. The effects of taurine supplementation on obesity, blood pressure and lipid profile: A meta-analysis of randomized controlled trials.
    Guan L; Miao P · European journal of pharmacology · 2021
    Meta-analysis12 studies pooledMetabolism Boost forTaurine
  24. Beneficial effects of taurine on serum lipids in overweight or obese non-diabetic subjects.
    Zhang M; Bi LF; Fang JH; Su XL; Da GL; Kuwamori T; Kagamimori S · Amino acids · 2005
    Randomized trial30 participantsMetabolism Boost forTaurine
  25. Use of skeletal muscle fiber composition to assess relationship between amino acid metabolism and insulin sensitivity.
    Magnusson TE; Blackwood SJ; Tischer D; Strmeň T; Pontén M; Edman S; Horwath O; Apró W; Moberg M; Chorell E; Katz A · European journal of endocrinology · 2025
    Cross-sectional study36 participantsMetabolism Boost forTaurine
  26. Insulin Receptor Substrates Regulation and Clinical Responses Following Vanadium-Enriched Yeast Supplementation in Obese Type 2 Diabetic Patients: a Randomized, Double-Blind, Placebo-Controlled Clinical Trial.
    Ghalichi F; Saghafi-Asl M; Kafil B; Faghfouri AH; Jourshari MR; Naserkiadeh AA; Ostadrahimi A · Biological trace element research · 2023
    Randomized trial44 participantsMetabolism Boost forVanadium
  27. Insulin signal mimicry as a mechanism for the insulin-like effects of vanadium.
    Mehdi MZ; Pandey SK; Théberge JF; Srivastava AK · Cell biochemistry and biophysics · 2006
    Narrative reviewMetabolism Boost forVanadium
  28. Metabolic effects of vanadyl sulfate in humans with non-insulin-dependent diabetes mellitus: in vivo and in vitro studies.
    Goldfine AB; Patti ME; Zuberi L; Goldstein BJ; LeBlanc R; Landaker EJ; Jiang ZY; Willsky GR; Kahn CR · Metabolism: clinical and experimental · 2000
    Clinical trial16 participantsMetabolism Boost forVanadium
  29. Vanadyl sulfate improves hepatic and muscle insulin sensitivity in type 2 diabetes.
    Cusi K; Cukier S; DeFronzo RA; Torres M; Puchulu FM; Redondo JC · The Journal of clinical endocrinology and metabolism · 2001
    Single-arm trial11 participantsMetabolism Boost forVanadium
  30. Effect of vanadium on insulin sensitivity in patients with impaired glucose tolerance.
    Jacques-Camarena O; González-Ortiz M; Martínez-Abundis E; López-Madrueño JF; Medina-Santillán R · Annals of nutrition & metabolism · 2009
    Randomized trial14 participantsMetabolism Boost forVanadium
  31. Effect of a plant extract of fenugreek (Trigonella foenum-graecum) on testosterone in blood plasma and saliva in a double blind randomized controlled intervention study.
    Lee-Ødegård S; Gundersen TE; Drevon CA · PloS one · 2024
    Randomized trial95 participantsTestosterone Support forFenugreek
  32. Examining the Effects of Herbs on Testosterone Concentrations in Men: A Systematic Review.
    Smith SJ; Lopresti AL; Teo SYM; Fairchild TJ · Advances in nutrition (Bethesda, Md.) · 2021
    Systematic review32 studies pooledTestosterone Support forFenugreek
  33. Efficacy of a novel extract of fenugreek seeds in alleviating vasomotor symptoms and depression in perimenopausal women: A randomized, double-blinded, placebo-controlled study.
    Khanna A; John F; Das S; Thomas J; Rao J; Maliakel B; Im K · Journal of food biochemistry · 2021
    Randomized trial48 participantsTestosterone Support forFenugreek
  34. Beneficial effects of fenugreek glycoside supplementation in male subjects during resistance training: A randomized controlled pilot study.
    Wankhede S; Mohan V; Thakurdesai P · Journal of sport and health science · 2024
    Randomized trial60 participantsTestosterone Support forFenugreek
  35. Effect of Two Different Doses of Vitamin D Supplementation on Metabolic Profiles of Insulin-Resistant Patients with Polycystic Ovary Syndrome.
    Jamilian M; Foroozanfard F; Rahmani E; Talebi M; Bahmani F; Asemi Z · Nutrients · 2018
    Randomized trial90 participantsTestosterone Support forVitamin D
  36. Androgens and hirsutism score of overweight women with polycystic ovary syndrome improved after vitamin D treatment: A randomized placebo controlled clinical trial.
    Al-Bayyari N; Al-Domi H; Zayed F; Hailat R; Eaton A · Clinical nutrition (Edinburgh, Scotland) · 2021
    Randomized trial60 participantsTestosterone Support forVitamin D
  37. Association between plasma 25-OH vitamin D and testosterone levels in men.
    Nimptsch K; Platz EA; Willett WC; Giovannucci E · Clinical endocrinology · 2012
    Case-control study1,362 participantsTestosterone Support forVitamin D
  38. Causal Link Between Vitamin D and Total Testosterone in Men: A Mendelian Randomization Analysis.
    Chen C; Zhai H; Cheng J; Weng P; Chen Y; Li Q; Wang C; Xia F; Wang N; Lu Y · The Journal of clinical endocrinology and metabolism · 2020
    Other4,254 participantsTestosterone Support forVitamin D
  39. Associations of vitamin D status and vitamin D-related polymorphisms with sex hormones in older men.
    Rafiq R; van Schoor NM; Sohl E; Zillikens MC; Oosterwerff MM; Schaap L; Lips P; de Jongh RT · The Journal of steroid biochemistry and molecular biology · 2017
    Cohort study643 participantsTestosterone Support forVitamin D
  40. Environmental exposure to metals and male reproductive hormones: circulating testosterone is inversely associated with blood molybdenum.
    Meeker JD; Rossano MG; Protas B; Padmanahban V; Diamond MP; Puscheck E; Daly D; Paneth N; Wirth JJ · Fertility and sterility · 2010
    Cross-sectional study219 participantsTestosterone Support forZinc
  41. Nonpharmacological Interventions for the Management of Testosterone and Sperm Parameters: A Scoping Review.
    Santos HO; Cadegiani FA; Forbes SC · Clinical therapeutics · 2022
    Scoping reviewTestosterone Support forZinc
  42. Zinc is an Essential Element for Male Fertility: A Review of Zn Roles in Men's Health, Germination, Sperm Quality, and Fertilization.
    Fallah A; Mohammad-Hasani A; Colagar AH · Journal of reproduction & infertility · 2020
    Narrative reviewTestosterone Support forZinc
  43. Clinical, endocrinological and biochemical effects of zinc deficiency.
    Prasad AS · Clinics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc
  44. Clinical, endocrinologic, and biochemical effects of zinc deficiency.
    Prasad AS · Special topics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc