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11 kwi 2024 · Detailed Vitamin A dosage information for adults and children. Includes dosages for Vitamin/Mineral Supplementation and Vitamin A Deficiency; plus renal, liver and dialysis adjustments.
The recommended daily amount of vitamin A is 900 micrograms (mcg) for adult men and 700 mcg for adult women. What the research says. Research on oral vitamin A for specific conditions shows: Acne. Large doses of oral vitamin A supplements don't appear to affect acne. Age-related macular degeneration.
Introduction. Vitamin A is the name of a group of fat-soluble retinoids, primarily retinol and retinyl esters [1, 2]. Vitamin A is involved in immune function, cellular communication, growth and development, and male and female reproduction [1-3].
IVACG endorses the recommendation from a meeting organized by WHO in February 2000 , that two 200,000-iu doses of vitamin A be given to women within 6 wk after delivery. The two doses should be given at least 24 h apart.
The total vitamin A content of a food is usually expressed as micrograms (µg) of retinol equivalents (RE). The amount of vitamin A adults aged 19 to 64 need is: 700 µg a day for men. 600 µg a day for women. You should be able to get all the vitamin A you need from your diet.
This vitamin A calculator converts different forms of vitamin A to Retinol Activity Equivalents expressed in the mass unit micrograms, which are used in Dietary Reference Intakes for vitamin A. This is also a new requirement for nutrition labels of supplements, where vitamin A was listed in international units (IUs) before.
The median intake of vitamin A ranges from 744 to 811 μg RAE/ day for men and 530 to 716 μg RAE/day for women. Using μg RAE, approximately 26 and 34 percent of vitamin A activity consumed by men and women, respectively, is provided from provitamin A carotenoids.
