Calcitriol
Calcitriol is the active form of vitamin D. It increases calcium absorption and is used for selected calcium and bone disorders when laboratory-guided treatment is needed. Listed uses include hypocalcaemia and renal osteodystrophy.
Key points
- Calcitriol is more active than routine vitamin D supplements and is not interchangeable with them.
- Blood calcium, phosphate and kidney function need monitoring to prevent harmful mineral imbalance.
- Confusion, repeated vomiting, severe weakness or an irregular heartbeat needs urgent assessment.
Listings are for comparison only. Suitability and supply depend on clinician and pharmacy checks, stock, destination rules and prescription requirements.
How it works
Calcitriol activates vitamin D receptors, increasing intestinal calcium absorption and influencing calcium, phosphate and parathyroid-hormone balance.
Important safety checks
Current calcium, phosphate, parathyroid hormone and kidney function guide treatment. Other vitamin D products, calcium supplements, thiazide diuretics, digoxin and magnesium-containing products require review. Do not independently increase calcium intake.
When to seek urgent care
Seek urgent help for confusion, marked drowsiness, repeated vomiting, severe weakness, fainting, an irregular heartbeat or severe dehydration with excessive thirst and urination.