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Vitamins · Ingredient profile
Vitamin A
Vision, growth & immune function
A fat-soluble vitamin involved in vision, immune function, reproduction, and growth. Foods contain preformed vitamin A or carotenoids that can be converted to vitamin A.
The essentials
Functions & potential benefits
- Helps maintain normal vision.
- Contributes to immune function.
- Supports normal cell development.
Everyday nutrition
Where it comes from.
Eggs, dairy foods, leafy greens, carrots, and sweet potatoes.
Read the NIH reference ↗Evidence, in perspective
Know the limits.
Getting enough supports essential functions. Extra vitamin A is not a general vision-enhancing treatment.
Read the NIH reference ↗Important considerations
Before choosing a supplement.
Too much preformed vitamin A can harm the liver and cause birth defects. Review pregnancy use with a clinician. High-dose beta-carotene is unsuitable for smokers and some former smokers.
Read the NIH reference ↗Ingredient education—not a product claim. This describes the ingredient, not a verified Herbs To Discover formula. Supplement Facts, serving amounts, directions, certifications, and availability are not yet published. Source review date 2026-09-15. Read the NIH reference ↗ · Editorial approach.