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Vitamin A

Vitamin A is preformed retinol/retinyl esters or provitamin a sources. It is used in supplements positioned for vitamin nutrition; vision; immune, although evidence strength and legally permitted claims depend on the exact form, dose and jurisdiction.

Immune system
Skin health
Brain health

Origin of Ingredient

found in liver, dairy and carotenoid-rich plants; supplement sources are purified/manufactured

History of Ingredient

Vitamin A became established through modern nutrition and deficiency research, particularly during the 19th and 20th centuries. Supplement forms were subsequently developed to provide consistent, measurable nutrient intake.

Scientific Makeup of Ingredient

retinoids involved in gene regulation and retinal in visual pigments

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