Generic name: Calcitriol.

Rocaltrol is a vitamin D synthetic. It replaces the lack of active vitamin D that is produced by the kidneys.

Quick Facts About Rocaltrol


Used to treat hypocalcemia (very low blood calciurr levels) and bone damage in people on dialysis, and those with hypoparathyroidism (decreased functioning of the parathyroid glands).

Rocaltrol Dosage

Take plenty of fluids to avoid dehydration during Rocaltrol therapy.

  • Usual adult dose: for people on dialysis — 0.25 microgram per day, doctor may increase. For hypoparathyroidism — 0.25 microgram per day, taken in the morning. Doctor may increase dose. Usual range for adults is 0.5 to 2 micrograms per day.
  • Usual child dose: for hypoparathyroidism — 0.25 microgram per day, taken in the morning, initially. Doctor may prescribe between 0.25 to 0.75 microgram per day for children 1 to 5 years, and 0.5 to 2 micrograms per day for most children 6 years and older.
  • Missed dose: if taking 1 dose every other day and you remember the same day — take as soon as possible, then go back to regular schedule. If taking 1 dose every other day and you remember the next day — take as soon as possible, skip a day, then go back to regular schedule. If taking 1 dose every day — take as soon as possible, unless it is the next day. In that case, do not take missed dose; go back to regular schedule. Do not double doses.

Rocaltrol Side Effects

Overdose symptoms:

coma, confusion, extreme drowsiness. If you suspect an overdose, immediately seek medical attention.

More common side effects: initial side effects — bone pain, constipation, dry mouth, extreme sleepiness, headache, metallic taste, muscle pain, nausea, vomiting, weakness. Later side effects — abnormal thirst, decreased sex drive, elevated cholesterol levels, excessive urination, inflamed eyes, irregular heartbeat, itchy skin, kidney problems, light intolerance, loss of appetite, nighttime urination, runny nose, very high body temperature, weight loss, yellowing skin.

Rare Rocaltrol side effects: mental disturbances, red patches on arms and hands with irregular or circular shapes.


Inform your doctor before combining Rocaltrol with: cholestyramine (Questran), digitalis (Lanoxin).

Check with your doctor before taking antacids such as Maalox (if you are on dialysis), calcium supplements, and vitamin D with Rocaltrol.

Special Cautions

If pregnant or planning to become pregnant, inform your doctor immediately. May appear in breast milk; could affect a nursing infant.

No special precautions apply to seniors.

Follow doctor’s instructions carefully for children.

  • Doctor may recommend a special diet or calcium supplements during Rocaltrol therapy. Inform your doctor if you are already taking medications with calcium or a calcium supplement.
  • Should not use if you have high blood levels of calcium or vitamin D poisoning.

Note: provides accurate and independent information prescription pills, over-the-counter medicines and natural products. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. If you have questions about  dosage, or Rocaltrol side effects, please contact your healthcare provider