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Supplements » Vitamin A

Vitamin A

Vitamin A

Vitamin A: Vitamin A is a fat-soluble vitamin that is available in supplements and found naturally in liver, butter, egg yolks, whole milk and dairy products, green leafy and yellow and orange vegetables, carrots, pineapple, cantaloupe, and fish oils. Vitamin A is necessary for the growth, development and function of every body organ. Vitamin A is a fat soluble vitamin that is stored in the liver, and excessive amounts can result in problems with toxicity.

Adequate Amounts Claimed As Beneficial For Conditions: Vitamin A

Adequate amounts of Vitamin A are claimed to be potentially beneficial for:

Adequate Amounts Claimed As Preventative For Conditions: Vitamin A

Adequate amounts of Vitamin A are claimed to be potentially preventative for:

Toxicity/Overdose Risks For Supplement Or Excessive Intake: Vitamin A

Excessive intake of Vitamin A may involve the following risks:

Descriptions of Vitamin A

Vitamin A: Retinol, a nutrient essential for proper vision and healthy skin and mucous membranes. Vitamin A is being studied in the prevention of cancer. It belongs to the family of drugs called retinoids.
Source: National Institute of Health

Vitamin A: A naturally-occurring acid of retinol. Vitamin A acid binds to and activates retinoic acid receptors (RARs), thereby inducing changes in gene expression that lead to cell differentiation, decreased cell proliferation, and inhibition of carcinogenesis. This agent also inhibits telomerase, resulting in telomere shortening and eventual apoptosis of some cancer cell types. The oral form of vitamin A acid has teratogenic and embryotoxic properties.(NCI04)
Source: Diseases Database

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