About Vitamin A
Supports vision and immune health. Category: Vitamins, Subcategory: Fat-Soluble Vitamin. Default unit: mcg RAE. Notes: Includes retinol and provitamin A carotenoids
Key Information
Compare All Forms
Compare different forms of Vitamin A by bioavailability, conversion rates, and active ingredient content:
| Form | Tier | Steps |
Vitamin A Activity (mcg RAE) |
Bioavailability | Action |
|---|---|---|---|---|---|
|
Vitamin A (Retinol)
Vitamin A (retinol) is crucial for vision, immune function,... |
Tier 2 | 1 | — | Moderate bioavailability form. Reliable form that works well but requires 1-2 step conversions by the body. Good balance of cost and effectiveness. | View → |
Scientific Evidence
Relevant research articles and studies on Vitamin A and retinoids including studies in the Journal of Investigative Dermatology, American Journal of Clinical Nutrition, and the Archives of Dermatology.