| 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. |
|---|---|---|
| Calories | 5 Calorie(s) | — |
| Total Carbohydrates | 1 Gram(s) | 1% |
| Vitamin C | 250 mg | 417% |
| Niacin | 60 mg | 300% |
| Vitamin B6 | 1 mg | 50% |
| Folic Acid | 500 mcg | 125% |
| Vitamin B12 | 70 mcg | 1167% |
| Calcium | 45 mg | 5% |
| Citrulline Malate | 6 Gram(s) | — |
| CarnoSyn | 3.2 Gram(s) | — |
| Creatine Nitrate | 1.5 Gram(s) | — |
| Betaine Anhydrous | 1.5 Gram(s) | — |
| Nitrosigine | 1.5 Gram(s) | — |
| Arginine Alpha Ketoglutarate | 1 Gram(s) | — |
| Taurine | 1 Gram(s) | — |
| C4 Ultimate Energy & Focus Blend | 858 mg | — |
Other ingredients: Polydextrose, Silicon Dioxide, Natural Flavors, Calcium Silicate, Sucralose, Malic Acid, Citric Acid, Acesulfame Potassium, FD&C Red #40
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.
Primary structural component of bones. Adequate lifelong intake, combined with vitamin D, helps prevent osteoporosis — supported by extensive clinical evidence.
Essential for muscle contraction through calcium signaling.
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.
Involved in neurotransmitter synthesis including serotonin and dopamine. Cofactor for over 100 enzyme reactions.
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Alternatives are selected from the same category (Vitamin C) with a higher overall score. This is not a recommendation — always verify ingredients and dosages match your needs.
B6 is a cofactor in the transsulfuration pathway, converting homocysteine to cysteine. This is a separate pathway from the B12/folate remethylation route.
Supports immune cell function. Regular supplementation may modestly reduce cold duration, but does not prevent colds.
Potent water-soluble antioxidant that protects cells from oxidative damage.
Essential cofactor for enzymes involved in collagen production.
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.
Well-researched ingredient for strength and power output. Effects are dose-dependent (typically 3-5g/day creatine monohydrate). Other creatine forms have less evidence.
Emerging evidence for cognitive benefits under stress, sleep deprivation, or in vegetarians. Brain studies typically use 5-20g/day, higher than standard athletic dosing.
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.