| Ingredient | Amount | % DV% Daily Value — how much of the recommended daily intake one serving provides, based on a 2,000 calorie diet. 100% = full daily need. Values over 100% are common for water-soluble vitamins (B, C) and generally safe. Values over 200% are highlighted. |
|---|---|---|
| Vitamin E | 16 mg | 107% |
| Thiamine | 2 mg | 167% |
| Riboflavin | 2 mg | 154% |
| Niacin | 25 mg | 156% |
| Folic Acid | 1000 mcg DFE | 250% |
| Vitamin B12 | 8 mcg | 333% |
| Zinc | 17 mg | 155% |
| Selenium | 75 mcg | 136% |
| L-Arginine | 1000 mg | — |
| Testofen Fenugreek seed extract | 600 mg | — |
| MegaNatural-BP Grape seed extract | 300 mg | — |
| Maca powder | 100 mg | — |
| Asian Ginseng root extract | 55 mg | — |
| Yohimbe bark extract | 50 mg | — |
| Horny Goat Weed extract | 50 mg | — |
| Hawthorn berry extract | 25 mg | — |
| Ginkgo biloba leaf extract | 25 mg | — |
Other ingredients: Microcrystalline Cellulose, Croscarmellose Sodium, Crospovidone, Hydroxypropylcellulose, Titanium Dioxide, Polyethylene Glycol, Stearic Acid, Talc, Magnesium Stearate, Silica
This score evaluates label quality — dosage disclosure, transparency, cleanliness of inactive ingredients, and formula composition. It does not measure clinical efficacy, bioavailability, or third-party testing. Read full methodology
Same category, higher SupplementScore. Based on dosage transparency, label cleanliness, and formula quality.
The research summaries below are about the ingredients in general, drawn from published studies that often use different doses, forms, and populations than this product. A "strong" evidence rating for an ingredient does not mean this product will produce that effect — studied doses may be significantly higher or lower than what is contained here. Always verify doses against the Supplement Facts table above.
Zinc is a cofactor for over 300 enzymes involved in immune cell development and function. Supplementation may reduce duration of common cold symptoms, particularly as lozenges. Essential for maintaining immune barrier integrity.
Essential for skin integrity and wound repair processes.
Essential for red blood cell formation. Deficiency causes megaloblastic anemia, confirmed by decades of clinical evidence.
Involved in myelin synthesis and nerve function. Adequate B12 status supports neurological health, particularly in older adults and vegans.
Cofactor in energy production pathways, but supplementation only helps if deficient.
Protects polyunsaturated fatty acids in cell membranes from oxidation.
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All scores are algorithmically generated from publicly available label data (NIH Dietary Supplement Label Database) and reflect label quality — not clinical efficacy, safety, or product quality. This page is not affiliated with or endorsed by GNC. If you represent this brand and believe any information is inaccurate, please contact us for a correction. Read full methodology
Alternatives are selected from the same category (B Vitamins) with a higher overall score. This is not a recommendation — always verify ingredients and dosages match your needs.
May help protect skin from UV damage when combined with vitamin C.
At 400mg/day (far above RDA of 1.3mg), riboflavin may reduce migraine frequency. Effect is dose-dependent and not expected at typical supplement doses.
At pharmacological doses (1500-3000mg), niacin may improve HDL cholesterol. This effect is dose-dependent and not expected at typical supplement doses.
Essential coenzyme (NAD/NADP) in hundreds of metabolic reactions.
Essential cofactor for pyruvate dehydrogenase and other enzymes in carbohydrate metabolism.
Adequate folate intake before and during early pregnancy reduces risk of neural tube defects. This is one of the most well-established findings in nutrition.
Essential cofactor for nucleotide synthesis and cell division.
Adequate folate intake before and during early pregnancy reduces risk of neural tube defects. This is one of the most well-established findings in nutrition.
Essential cofactor for nucleotide synthesis and cell division.