BioStacks

Best Vitamin A for General Health

Top 10 products ranked

Last reviewed May 2026

Clinical dose: 700–1500 mcg

Why Vitamin A for General Health

Vitamin A plays a supporting role in general health. Exists as preformed retinol (animal sources) and provitamin A carotenoids like beta-carotene (plant sources). Retinyl palmitate and retinyl acetate are common supplemental forms with high bioavailability.

What dose to look for

Clinical studies typically use 7001500 mcg of vitamin a. Products below this range may not deliver meaningful results.

What the research says

Vitamin A has strong clinical evidence for general health benefits. Essential for vision via retinal pigment formation; toxicity risk above RDA in preformed retinol, not beta-carotene Learn more