About vitamin a + vitamin d
Fat-soluble vitamins
Used for
- Prevention or treatment of vitamin A deficiency
- Prevention or treatment of vitamin D deficiency
Usual adult dose
Varies by deficiency and clinical circumstances; no single usual dose applies.
Usual dose in children
Varies by age, diet, deficiency risk, and local guidance; no single usual dose applies.
Common side effects
- Nausea or vomiting
- Constipation
- Headache
- Excess dosing can cause vitamin toxicity
Important warnings
- Excess vitamin A may damage the liver and cause birth defects.
- Excess vitamin D can raise blood calcium and harm the kidneys.
- Avoid combining with other vitamin A or D products unless directed.
- Dose carefully: vitamin drops can be concentrated.
Pregnancy
Excess vitamin A, especially retinol, can harm an unborn baby; dosing needs care.
Breastfeeding
Use only appropriate doses; excessive vitamin A or D may be harmful.
Interactions
- Vitamin A with retinoid medicines may increase toxicity.
- Vitamin D with thiazide diuretics may increase blood calcium.
- Orlistat and bile-acid binders can reduce vitamin absorption.
- Some seizure medicines can reduce vitamin D levels.
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 It may be incomplete or out of date.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.