Question: is 25000 iu of vitamin a safe?
Answer: Intakes of more than 25,000 IU/day for over 6 years, or more than 100,000 IU/day for over 6 months are considered toxic, but there is wide interindividual variability (35). Severe cases of hypervitaminosis A may result in liver damage, bleeding (hemorrhage), and coma.