The tolerable upper limit (UL) of Vitamin A for adults is 3,000 micrograms RAE, (10,000 IUs retinol, 20,000 IUs of beta carotene from supplements, or 60,000 IUs beta carotene from food) which will not typically be exceeded by common multivitamins. 19 дек. 2015 г.
What level of vitamin A is toxic?
The reference range for vitamin A is 20-60 mcg/dL, and a toxic level is higher than 60-100 mcg/dL. Obtain a complete blood count (CBC) to rule out leukopenia. Also perform calcium, glucose, and liver function tests (LFTs). levels are affected by liver stores and dietary intake of vitamin A.
What amount is too much vitamin A?
Taking more than 10,000 mcg a day of oral vitamin A supplements long term can cause: Bone thinning. Liver damage. Headache.
What is the upper limit of vitamin A daily?
The Recommended Dietary Allowance (RDA) for men and women is 900 and 700 μg retinol activity equivalents (RAE)/day, respectively. The Tolerable Upper Intake Level (UL) for adults is set at 3,000 μg/day of preformed vitamin A. There are a number of sources of dietary vitamin A.
Is 500% vitamin A too much?
Levels of up to 10,000 IU (3,000 mcg) have been considered safe. Beyond that, though, vitamin A can build up to cause liver damage and brain swelling; pregnant women who ingest too much run the risk of fetal damage.
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