About vit a
Vitamin A supplement
Used for
- Prevention or treatment of vitamin A deficiency
Usual adult dose
Dose depends on the deficiency and local product labeling; 1 mg retinol daily is not a routine general supplement dose.
Usual dose in children
Depends on age and deficiency; dosing requires product labeling and clinical guidance.
Common side effects
- Nausea or vomiting
- Headache
- Blurred vision
- Dry or peeling skin
Important warnings
- Excess vitamin A can cause serious toxicity, especially with prolonged use.
- Avoid combining with other vitamin A supplements unless directed.
- High doses can harm the liver and bones.
Pregnancy
Excess preformed vitamin A can cause birth defects; high-dose use should be avoided in pregnancy.
Breastfeeding
Vitamin A is present in breast milk; excessive supplemental doses may be harmful.
Interactions
- Retinoid medicines, such as isotretinoin, increase toxicity risk.
- Orlistat may reduce vitamin A absorption.
- Mineral oil may reduce vitamin A absorption.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.