What should I compare first?

Separate preformed vitamin A such as retinol or retinyl esters from beta-carotene. When labels use mcg RAE and IU, compare amounts expressed in the same unit and consider the source.

What cautions should I know?

Long-term excess preformed vitamin A can be harmful, and high-dose use during pregnancy needs particular caution. People who smoke or formerly smoked are advised to avoid high-dose beta-carotene supplements.

Vitamin A: Retinol, Beta-Carotene, and mcg RAE Labels

Compare vitamin A by preformed retinol versus beta-carotene, mcg RAE or IU units, serving size, and multivitamin overlap.

Prepared by Supplecipe Editorial TeamData and editorial method

This page is for general reference only and is not medical advice, diagnosis, treatment, or prescription. Research and regulatory status can change, so ask a qualified professional when medical judgment is needed.

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Vitamin A conversion depends on source, so front-label IU alone is hard to compare. Read mcg RAE together with the ingredient source.

What to compare on product labels

Separate preformed vitamin A such as retinol or retinyl esters from beta-carotene.
When labels use mcg RAE and IU, compare amounts expressed in the same unit and consider the source.
Add vitamin A from multivitamin, cod-liver-oil, and eye-health products.

Other names and search terms

Vitamin ARetinolRetinyl PalmitateBeta-Carotene비타민 A레티놀베타카로틴

Ingredients often compared together

Cautions

Long-term excess preformed vitamin A can be harmful, and high-dose use during pregnancy needs particular caution.
People who smoke or formerly smoked are advised to avoid high-dose beta-carotene supplements.

Check products on Supplecipe

Search the ingredient, switch to the single-ingredient filter, then open product comparison or stack analysis for the products you are considering.

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