What happens if you take too much vitamin A?
Getting too much preformed vitamin A (usually from supplements or certain medicines) can cause severe headache, blurred vision, nausea, dizziness, muscle aches, and problems with coordination. In severe cases, getting too much preformed vitamin A can even lead to coma and death.
What are the four signs of vitamin A overdose?
Symptoms and Signs of Vitamin A Toxicity Drowsiness, irritability, abdominal pain, nausea, and vomiting are common.
How much vitamin A is poisonous?
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. (Beta-carotene [ie, provitamin A] is converted to retinol but not rapidly enough for acute toxicity.)
What is the maximum vitamin A per day?
Both deficiency and surplus intake may cause severe side effects. Therefore, while it’s crucial to meet the RDA of 700–900 mcg daily for adults, it’s also essential not to exceed the daily upper limit of 3,000 mcg.
How much vitamin A is safe per day?
RDA: The Recommended Dietary Allowance for adults 19 years and older is 900 mcg RAE for men (equivalent to 3,000 IU) and 700 mcg RAE for women (equivalent to 2,333 IU). UL: The Tolerable Upper Intake Level is the maximum daily intake unlikely to cause harmful effects on health.
How do you recover from vitamin A toxicity?
The most effective way to treat this condition is to stop taking high-dose vitamin A supplements. Most people make a full recovery within a few weeks. Any complications that occurred from the excess vitamin A, such as kidney or liver damage, will be treated independently.
How long does vitamin A stay in your body?
The liver stores vitamins and minerals for the times when they may be lacking in the diet. It can store enough vitamin A and vitamin B12 for four years, and enough vitamin D for four months.
How long does vitamin A stay in your system?
Can vitamin A damage the liver?
Taking high doses of vitamin A supplements can cause liver damage. Combining high doses of vitamin A supplements with other drugs that can damage the liver could increase the risk of liver disease.
Who should not take vitamin A?
But, too much preformed vitamin A can cause birth defects in your baby. Pregnant women should avoid supplements that contain more than 1,500 micrograms of RAE. Drug interactions. Vitamin A can interact with certain drugs like blood thinners, bexarotene, retinoids, orlistat, and any drug that can cause liver damage.