About vitamin d
Fat-soluble vitamin
Used for
- Prevention or treatment of vitamin D deficiency
- Support of calcium absorption and bone health
Usual adult dose
Commonly 600–800 IU daily for routine intake; deficiency treatment varies by blood level and clinical guidance.
Usual dose in children
Infants commonly receive 400 IU daily; older children generally need 600 IU daily, including intake from food.
Common side effects
- Usually well tolerated at recommended doses
- Excess may cause nausea, constipation, weakness, or increased thirst
- High doses may raise blood calcium and damage kidneys
Important warnings
- Taking too much can cause vitamin D toxicity
- Use caution with kidney disease, high blood calcium, or kidney stones
- Dose may need adjustment with certain medical conditions
Pregnancy
Recommended intake is generally 600 IU daily; higher doses should be guided by a clinician.
Breastfeeding
Recommended intake is generally 600 IU daily; infant supplementation may still be needed.
Interactions
- Thiazide diuretics may increase risk of high blood calcium
- Orlistat and bile-acid binders may reduce absorption
- Some seizure medicines and corticosteroids may 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 It may be incomplete or out of date.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.