Existing WHO guidance suggests a dose of up to 10 000 IU vitamin A per day, or a weekly dose of up to 25 000 IU (1). A single dose of a vitamin A supplement greater than 25 000 IU is not recommended as its safety is uncertain.
Is vitamin A 8000 IU safe?
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.
Is 7500 IU of vitamin A too much?
The daily biological need for vitamin A is estimated to be 800 retinol equivalents (RE)/d (2667 IU/d) for adult women and 1000 RE/d (3300 IU/d) for adult men; doses > or = 7500 RE (> or = 25000 IU)/d are considered potentially toxic over the long term.
Why is too much vitamin A bad during pregnancy?
Given that vitamin A is fat soluble, your body stores excess amounts in the liver. This accumulation can have toxic effects on the body and lead to liver damage. It can even cause birth defects. For example, excessive amounts of vitamin A during pregnancy has been shown to cause congenital birth abnormalities.
How much vitamin A is safe during pregnancy?
The National Research Council’s recommended dietary allowance for vitamin A during pregnancy is 1,000 retinol equivalents (RE)/day, which is equivalent to 3,300 IU as retinol or 5,000 IU of vitamin A obtained from the typical American diet as a combination of retinol and carotenoids, e.g., beta-carotene.
What is vitamin A 8000 IU good for?
Nature Made Vitamin A 2,400 mcg (8,000 IU) helps meet daily nutrient needs of vitamin A. Vitamin A is essential for healthy eye function, and is directly involved in photochemical reactions in your retina.
Is 10000 units of vitamin A too much?
The recommended daily allowance (RDA) for vitamin A is 900 mcg and 700 mcg per day for men and women, respectively — which can be easily reached by following a whole-foods diet ( 27 ). However, it’s important not to exceed the tolerable upper limit (UL) of 10,000 IU (3,000 mcg) for adults to prevent toxicity ( 27 ).
How many IU of vitamin A is toxic?
The acute toxic dose of vitamin A is 25,000 IU/kg, and the chronic toxic dose is 4000 IU/kg every day for 6-15 months.
What birth defects does vitamin A cause?
The babies of women who consumed more than 10,000 international units of vitamin A daily — nearly four times the recommended amount — from supplements or food or both were more likely to be born with malformations of the head, heart, brain and spinal cord.
Is 4000 IU of vitamin A too much during pregnancy?
Vitamin A: No more than 4,000 IU (800 ug). Taking too much vitamin A can be dangerous. That’s why many manufacturers have reduced the amount of vitamin A in their vitamin supplements or have replaced it with beta-carotene, a much safer source of the vitamin. Folic acid: At least 400 to 600 mcg.
Is 5000 IU of vitamin d3 safe during pregnancy?
Maternal vitamin D supplementation substantially improved the levels of 25(OH)D. Of three used regimens, the dose of 5000 IU/day is considered safe and equally effective as of 200000 IU stat.
What is the most important vitamin during pregnancy?
1- FOLIC ACID
Folate (vitamin B9) is required by the body in higher quantities during pregnancy to help development of your baby’s neural system and for decreasing the chance of birth defects of the brain, spine and spinal cord (neural tube defects) such as spina bifida.
Is 2000 IU of vitamin A safe during pregnancy?
In healthy, asymptomatic antenatal women, 1000-2000 IU can be supplemented daily in the second and third trimesters, without fear of vitamin D toxicity or teratogenicity. No safety data, however, is available for the first trimester with this dose, either.
What vitamins should be avoided during pregnancy?
For example, high doses of vitamin A, vitamin C, or vitamin E can be dangerous. It’s best not to take these vitamins as supplements in pregnancy. It’s also best to avoid foods that may be very high in vitamin A, including liver and liver products such as pâté.