Because of the teratogenic effects secondary to excessive vitamin A intake, the WHO recommends as safe during pregnancy a maximum dose of up to 10,000 IU daily or 25,000 IU weekly after the first 60 days of gestation [10,12,38].
How much vitamin A is safe during pregnancy?
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.
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.
Is 5000 IU of vitamin A safe during pregnancy?
Pregnant women should avoid multivitamin or prenatal supplements that contain more than 1.5 mg/day (5,000 IU) of vitamin A. Vitamin A from beta-carotene is not known to increase the risk of birth defects.
How much vitamin A can cause birth defects?
The higher the doses consumed, the greater the risk, the researchers found. Babies born to women who consumed more than 10,000 international units of the vitamin daily were 2.4 times as likely to be born with such defects as babies exposed to 5,000 international units or less.
How does vitamin A affect pregnancy?
If you’re pregnant
Having large amounts of vitamin A can harm your unborn baby. So if you’re pregnant or thinking about having a baby, do not eat liver or liver products, such as pâté, because these are very high in vitamin A. Also avoid taking supplements that contain vitamin A.
How much vitamin A is 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 too much vitamin C bad for pregnancy?
And it’s not a good idea to take megadoses of vitamin C when you’re pregnant. There’s some concern that taking too much vitamin C in the form of supplements during pregnancy may increase the risk of preterm birth. Excessive vitamin C can also upset your stomach.
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 1000mg vitamin C safe in pregnancy?
During pregnancy or when breastfeeding, women should get the following levels of vitamin C per day: 14–18 years: 80 mg during pregnancy and 115 mg when breastfeeding. 19 years and older: 85 mg during pregnancy and 120 mg when breastfeeding.
Should Prenatals have vitamin A?
It’s also a good idea to ask your practitioner what they recommend you should look for in a prenatal vitamin. Choose a supplement that contains no more than 4,000 IU (800 mcg) of vitamin A; higher doses (over 10,000 IUs) can be dangerous.
Is vitamin A retinol safe during pregnancy?
Despite the low risk suggested by these studies, experts still suggest pregnant women avoid applying vitamin A-based formulations to their skin during early pregnancy. On the other hand, if you have used a cosmetic containing a retinol or a similar vitamin A-like compound during pregnancy, there’s no need to panic.
Can lack of vitamin A cause birth defects?
Since the Rothman study, recommended vitamin A limits have decreased to less than 10,000 IU/d. Two small epidemiologic studies support the conclusion that less than 10,000 IU/d of vitamin A is not teratogenic.
What foods are vitamin A found in?
The top food sources of vitamin A in the U.S. diet include dairy products, liver, fish, and fortified cereals; the top sources of provitamin A include carrots, broccoli, cantaloupe, and squash [4,5].
Is it OK to take vitamin C during pregnancy?
During pregnancy, vitamin C is vital for both mom and baby. You need it for tissue repair and wound healing, and it helps your baby’s bones and teeth develop, too. Vitamin C also aids in the body’s production of collagen, helps bolster immunity and, on top of it all, improves your ability to absorb iron.