About vitamin a
Fat-soluble vitamin
Used for
- Prevention or treatment of vitamin A deficiency
Usual adult dose
Varies by deficiency and formulation; treatment requires clinician-directed dosing.
Usual dose in children
Varies by age and deficiency; dosing requires clinician guidance.
Common side effects
- Nausea or vomiting
- Headache
- Dry, peeling skin
- High doses can damage the liver
Important warnings
- Excess vitamin A can cause serious toxicity.
- Avoid combining with other vitamin A supplements unless directed.
- Dose and concentration vary between products.
Pregnancy
High doses of preformed vitamin A can cause birth defects; avoid excess.
Breastfeeding
Usual nutritional amounts are generally compatible; excessive doses may be harmful.
Interactions
- Retinoid medicines, such as isotretinoin, increase toxicity risk.
- Orlistat and mineral oil can 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 It may be incomplete or out of date.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.