About cholecalci ferol
Vitamin D3 (cholecalciferol)
Used for
- Prevention or treatment of vitamin D deficiency
- Support for bone health when vitamin D is inadequate
Usual adult dose
For deficiency, commonly 25,000 IU once weekly for several weeks, then a lower maintenance dose; schedules vary by local guidance.
Usual dose in children
For deficiency, doses depend on age and severity; clinician-directed regimens are required.
Common side effects
- High blood calcium, causing nausea or constipation
- Excess thirst or frequent urination
- Kidney stones with prolonged excessive dosing
Important warnings
- Excessive or prolonged use can cause vitamin D toxicity and kidney damage.
- Use cautiously with kidney disease, high calcium, or a history of kidney stones.
- Keep out of reach of children; accidental overdose can be dangerous.
Pregnancy
Use only when needed and under healthcare guidance; excessive vitamin D can harm the mother and fetus.
Breastfeeding
Generally compatible at appropriate doses; excessive maternal dosing can raise infant calcium levels.
Interactions
- Thiazide diuretics may increase high-calcium risk.
- Digoxin: high calcium may increase abnormal heart rhythm risk.
- Orlistat and some bile-acid binders can reduce vitamin D absorption.
- Some seizure medicines and rifampicin 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 It may be incomplete or out of date.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.