Is 20000 IU of vitamin A 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.
How much vitamin A is too much per day?
People are advised to avoid exceeding the upper limit for intake, which is 10,000 IU (900 mcg) per day for adults. Higher amounts, or 300,000 IU (900 mg), may cause acute hypervitaminosis A in adults. Children can experience harmful effects at much lower amounts ( 18 ).
Is 25000 units of vitamin A Safe?
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.
Is 50000 IU of vitamin A Safe?
Conclusions: The vitamin A doses of 50000 and 75000 IU/day for 1 year proved safe and equally more efficacious than the 25000 IU/day dose and can be recommended for future skin cancer chemoprevention studies.
Can I take 25000 IU vitamin A daily?
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 ≥7500 RE (≥25000 IU)/d are considered potentially toxic over the long term.
What vitamins can cause liver damage?
Hepatotoxicity
- Folic Acid (Folate, Folinic Acid)
- Vitamin A & Retinoids. Vitamin A. Acitretin, Etretinate, Isotretinoin. Bexarotene.
- Vitamin B. Biotin (B5) Choline. Cyanocobalamin (B12)
- Vitamin C (Ascorbic Acid)
- Vitamin D (Cholecalciferol, Ergocalciferol)
- Vitamin E (alpha Tocopherol)
- Vitamin K (Menadione, Phytonadione)
Can you OD on vitamin A?
Vitamin A is a fat-soluble nutrient that is naturally present in many foods, like beef, eggs and many fruits and vegetables. An overdose of this vitamin can lead to problems with confusion, hair loss, liver damage and bone loss.
Is 25000 IU of vitamin A too much?
So for those not vitamin A deficient, 25,000 IU instead of the recommended 2,300 (female) to 3,000 (male) IUdaily would also be a massive overdose. According to the University of Michigan, up to 25,000 IU of vitamin A per day is considered safe.
How many IU of vitamin A should you take a day?
According to the University of Michigan, up to 25,000 IU of vitamin A per day is considered safe. However, people over age 65 and those with liver disease should probably not supplement with more that 15,000 IU per day, unless supervised by a doctor. Less than 10,000 IU per day is generally accepted as safe.
How much vitamin D is safe to take daily?
We now know that vitamin D is made in the skin in amounts ranging up to 25,000 IU a day with exposure to UVB radiation. There is little data on the safety and blood levels of 25OHD and calcium after prolonged daily intake of amounts of vitamin D in this range.
How much vitamin A is toxic?
Most conventional wisdom and research indicate that 20,000 I.U. of vitamin A can be toxic, even lethal. It scares me to follow this advice. Originally published February 21, 2002. Updated November 28, 2014. You are right to be concerned about vitamin A toxicity. But first, please note that vitamin A comes in many forms.