Calcitriol Capsule: Uses, Dosage & Side Effects in Pakistan

Calcitriol Capsule Uses, Dosage, Side Effects & Price in Pakistan

1. Quick Info (Mukhtasir Maloomat)

2. What is Calcitriol Capsule? (Calcitriol kya hai)

Calcitriol (Rocaltrol, Calci-D) is active Vitamin D — the form of Vitamin D that is fully active in the body and works directly. Ordinary Vitamin D supplements (cholecalciferol) require kidney activation; in CKD the kidney cannot perform this function, so calcitriol is given directly.

Calcitriol promotes calcium absorption from the intestine, supports bone mineralisation, and suppresses excess parathyroid hormone (PTH) secretion — all of which are essential in CKD, hypoparathyroidism, and related conditions.

IMPORTANT: Calcitriol is completely different from OTC vitamin D supplements. Cholecalciferol (400–4000 IU) and calcitriol 0.25 mcg are not the same thing — mixing them can be dangerous.

3. Uses (Fayde / Kis kaam aata hai)

• Renal Osteodystrophy
• Hypoparathyroidism
• Hypocalcaemia
• Vitamin D-dependent rickets
• Osteoporosis (adjunct — less common than cholecalciferol)
• Post-renal transplant hypocalcaemia

4. Who Should Take (Kis ko lena chahiye)

• Patients with CKD (chronic kidney disease) who have secondary hyperparathyroidism or bone disease
• Patients with hypoparathyroidism
• Patients with low serum calcium, under the direction of a nephrologist or endocrinologist
• Children with Vitamin D-dependent rickets

5. When NOT to Take (Kab nahi lena chahiye)

• In cases of hypercalcaemia (already high blood calcium)
• If there is a previous episode of Vitamin D toxicity
• If allergic to Calcitriol or Vitamin D analogs
• Without a doctor's prescription — this is an Rx medicine

6. Dosage (Kitni leni hai)

• Typically 0.25 mcg once daily — as per doctor's instructions

• 0.25 mcg to 0.5 mcg daily

• Strictly as prescribed — over-dosing causes hypercalcaemia (dangerous)

• If you miss a dose, take it as soon as you remember. If the next dose is close, skip the missed dose. Never take a double dose.

7. How to Take (Kaise lena hai)

• Swallow the capsule whole — do not break it
• Follow the schedule your doctor has prescribed
• Can be taken with or without food
• Continue treatment alongside calcium monitoring

8. Best Time (Kab lena chahiye)

• Take at the same time every day
• Doctors usually recommend a morning dose

9. Empty Stomach or After Food (Khali pait ya khane ke baad)

Calcitriol can be taken with or without food. If GI upset occurs, taking it with food is preferable.

10. Warnings (Ihtiyat)

• Calcitriol is very potent — even a slightly excessive dose can raise blood calcium
• Regular serum calcium and phosphate monitoring is mandatory

• Avoid calcium-containing antacids
• Taking excessive dairy or calcium supplements — ask your doctor first

• Do not mistake Cholecalciferol (Vitamin D3 sachets, D-Sol, etc.) for calcitriol — they are different medicines

11. Precautions (Ahm ehtiyaat)

• Check blood calcium and phosphate every 1-2 months (initially)
• If excessive thirst, frequent urination, confusion, or vomiting occur — contact a doctor immediately (signs of hypercalcaemia)
• Store the medicine in a cool, dark place — keep out of reach of children

12. Side Effects (Nuksanat)

• Nausea, vomiting, constipation, weakness, headache, dry mouth, excessive thirst, frequent urination

• Severe hypercalcaemia (cardiac arrhythmias, nephrocalcinosis, renal failure, coma)
• Kidney stones (loin pain, blood in urine)
• Metastatic calcification
• Adynamic bone disease

13. Drug Interactions (Dawaon ke saath reaction)

• Calcium supplements / antacids — additive hypercalcaemia risk
• Thiazide diuretics (hydrochlorothiazide) — reduce calcium excretion → hypercalcaemia risk
• Cholestyramine — reduces calcitriol absorption (separate timing)
• Phenytoin / phenobarbitone — increase calcitriol catabolism, reducing efficacy
• Magnesium antacids + renal failure — hypermagnesaemia risk

14. When to See Doctor (Kab doctor ke paas jayein)

• Excessive thirst or excessive urination (hypercalcaemia signs)
• Nausea, vomiting, weakness, confusion
• Loin pain or blood in urine (kidney stones)
• Irregular heartbeat or fainting
• Severe constipation

15. Alternatives (Sasti Dusri Dawaein)

16. Price in Pakistan (Price kitni hai)

17. FAQs (Aksar poochay jane walay sawalat)

Q: Calcitriol kis kaam aata hai?

A: Calcitriol is active Vitamin D — used in kidney disease (CKD), hypoparathyroidism, and calcium deficiency. Ordinary vitamin D supplements do not work in CKD because the kidney cannot perform the conversion.

Q: Calcitriol aur vitamin D mein kya farq hai?

A: Calcitriol is the final active form of Vitamin D (1,25-dihydroxyvitamin D3). Cholecalciferol (OTC vitamin D) is first activated by the liver and then the kidney. In CKD the kidney cannot perform this step — so calcitriol is given directly.

Q: Calcitriol ke side effects kya hain?

A: The biggest risk is hypercalcaemia — excessive calcium in the blood (thirst, vomiting, weakness, kidney stones, arrhythmia). Regular blood tests are essential. See a doctor immediately at any symptom.

Q: Calcitriol price in Pakistan kya hai?

A: Price varies by pharmacy and strength. For the exact price, confirm at a local pharmacy or a licensed online pharmacy (dawaai.pk, sehat.com.pk).

Q: Calcitriol kidney marz mein kyun diya jata hai?

A: In CKD, the kidney cannot convert vitamin D into active calcitriol. Calcitriol is already active — it works directly via VDR receptors. Regular vitamin D supplements are useless in this case.

18. Medical Review (Medical jaiza)

Compiled by the PakVita Editorial Team · AI-assisted drafting with editorial review · Sourced from DRAP, WHO, BNF · Last updated: 2026-06-17

19. Disclaimer (Zaroori tanbeeh)

The information on this page is for awareness only. It is not medical advice. Always consult your doctor or pharmacist before taking any medicine. PakVita is not responsible for any harm.