| 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 B12 | 2.4 mcg | 100% |
| Nitrosigine | 1.5 Gram(s) | — |
| L-Citrulline | 1.5 Gram(s) | — |
| Oxyjun Terminalia arjuna bark extract | 400 mg | — |
| Agmatine Sulfate | 250 mg | — |
Other ingredients: Microcrystalline Cellulose, Croscarmellose Sodium, Hydroxypropylcellulose, Silica, Hydroxypropyl Methylcellulose, Polydextrose, Magnesium Stearate, Mica, Titanium Dioxide, Stearic Acid, Talc, Medium Chain Triglycerides, FD&C Blue #2 Lake, FD&C Red #40 Lake, Ethylcellulose, Triacetin, Diacetylated Monoglycerides, Oleic Acid, Polyethylene Glycol
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.
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.
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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 AMP Advanced Muscle Performance. 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.