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Vitamin A
Primary Use / Function: Supports vision, immune function, skin health, and cell growth
Daily Dose Range: 700–900 mcg RAE (Recommended Dietary Allowance); upper limit ~3000 mcg RAE
Frequency: Once daily
With Food? Yes, fat-soluble vitamin—take with a fat-containing meal
Enhancing Combinations：Vitamin D, Zinc, Omega-3s (for eye health); Vitamin E (antioxidant synergy)
Gender Specific：No
Contraindications / Cautions: Toxic at high doses; avoid high intake during pregnancy unless prescribed; watch for pre-formed retinol toxicity
Notes: Exists in two main forms—preformed vitamin A (retinol) and provitamin A (beta-carotene); be cautious with liver-derived supplements
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