| 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 A | 5000 IU | 100% |
| Vitamin C | 1000 mg | 833% |
| Vitamin D | 1000 IU | 250% |
| Calcium | 15 mg | 2% |
| Magnesium | 20 mg | 5% |
| Zinc | 15 mg | 100% |
| Elderberry extract | 250 mg | — |
| Garlic | 200 mg | — |
| Astragalus | 200 mg | — |
| Organic Mycelial Mushroom Blend | 200 mg | — |
| DigeZyme(R) Enzyme Blend | 125 mg | — |
| Echinacea purpurea root extract | 100 mg | — |
| Goldenseal | 100 mg | — |
| Olive leaf extract | 100 mg | — |
| Quercetin | 100 mg | — |
| Andrographis extract | 100 mg | — |
| Ginger Root Extract | 100 mg | — |
| Elecampane | 100 mg | — |
| Cat's Claw Bark | 100 mg | — |
| Pau d'Arco | 50 mg | — |
| Cayenne Pepper | 50 mg | — |
Other ingredients: Cellulose, Croscarmellose Sodium, Stearic Acid, Magnesium Stearate, Silica, Enteric Coating
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 rhodopsin production in the retina. Deficiency causes night blindness — one of the earliest recognized nutritional deficiencies.
Critical role in maintaining mucosal barriers and immune cell function.
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.
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.
No reviews yet.
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.
May improve sleep quality, especially in older adults and those with low magnesium status.
60% of body magnesium is stored in bone. Essential for bone mineralization.
May reduce muscle cramps and support post-exercise recovery.
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.
Essential for calcium absorption. Deficiency leads to rickets in children and osteomalacia in adults — a well-established causal relationship.
May reduce risk of respiratory infections. Active area of research.
Some association between low vitamin D levels and depression, but evidence is inconsistent.
1 FDA warnings on file. View details