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Calcitriol

Brand Name: Calcijex, Rocaltrol

Generic Name: Calcitriol

Drug Class: Vitamin D Analogs

What Is Calcitriol and How Does It Work?

Calcitriol is a synthetic version of Vitamin D3 used to treat calcium deficiency with hypoparathyroidism (decreased functioning of the parathyroid glands) and metabolic bone disease in people with chronic kidney failure.

Calcitriol is available under the following different brand names: Calcijex and Rocaltrol.

Dosages of Calcitriol:

Adult and Pediatric Dosage Forms and Strengths

Capsule

  • 0.25 mcg
  • 0.5 mcg

Oral solution

  • 1 mcg/mL

Injectable solution

  • 1 mcg/mL

Dosage Considerations – Should be Given as Follows:

Chronic Renal Dialysis Associated Hypocalcemia

Oral

  • Adult, Initial: 0.25 mcg orally once/day to every other day; titrate by 0.5-1 mcg/day every 4-8 weeks
  • Pediatric: 0.25-2 mcg/day orally once/day

Intravenous (IV)

  • Initial: 1-2 mcg IV (0.02 mcg/kg) 3 times/week; adjust dose every 2-4 weeks
  • Maintenance: 0.5-4 mcg IV 3 times/week

Hypoparathyroidism/Pseudohypoparathyroidism

  • Adult, Initial: 0.25 mcg orally once/day; titrate by 0.25 mcg every 2-4 weeks
  • Adult, Maintenance: 0.5-2 mcg orally once/day
  • Children under 1 year: 0.04-0.08 mcg/kg orally once/day
  • Children 1-5 years: 0.25-0.75 mcg orally once/day
  • Children over 6 years: 0.5-2 mcg orally once/day

Secondary Hyperparathyroidism in Moderate to Severe Kidney Disease

  • Adult: 0.25 mcg/day orally; may increase to 0.5 mcg/day
  • Children under 3 years: 0.01-0.015 mcg/kg/day
  • Children 3 years and older: 0.25 mcg/day orally; may increase to 0.5 mcg/day

Familial Hypophosphatemia, Pediatric

  • Initial: 0.015-0.02 mcg/kg orally once/day
  • Maintenance: 0.03-0.06 mcg/kg orally once/day
  • No more than 2 mcg orally once/day

Hypocalcemia in Premature Infants

  • 1 mcg once/day orally for 5 days

Vitamin D Dependent Rickets (Off-label)

Hypocalcemic Tetany in Premature Infants (Off-label)

  • 0.05 mcg/kg intravenously (IV) once/day for 5-12 days

Administration

  • Goal is to maintain serum Ca 9-10 mg/dL

QUESTION

Next to red peppers, you can get the most vitamin C from ________________. See Answer

What Are Side Effects Associated with Using Calcitriol?

Common side effects of calcitriol include:

This document does not contain all possible side effects and others may occur. Check with your physician for additional information about side effects.

What Other Drugs Interact with Calcitriol?

If your doctor has directed you to use this medication, your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor, health care provider or pharmacist first.

Calcitriol has no known severe interactions with other drugs.

Serious interactions of calcitriol include:

Moderate interactions of calcitriol include:

  • axitinib
  • crofelemer
  • dabrafenib
  • dienogest/estradiol valerate
  • efavirenz
  • elvitegravir/cobicistat/emtricitabine/tenofovir DF
  • iloperidone
  • linagliptin
  • mitotane

Calcitriol has no known mild interactions with other drugs.

This information does not contain all possible interactions or adverse effects. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share this information with your doctor and pharmacist. Check with your health care professional or doctor for additional medical advice, or if you have health questions, concerns or for more information about this medicine.

What Are Warnings and Precautions for Calcitriol?

Warnings

This medication contains calcitriol. Do not take Calcijex or Rocaltrol if you are allergic to calcitriol or any ingredients contained in this drug.

Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center immediately.

Contraindications

  • Hypercalcemia or evidence of vitamin D toxicity
  • Hypersensitivity to calcitriol, other vitamin D analogues, or other ingredients

Effects of Drug Abuse

  • None

Short-Term Effects

  • See "What Are Side Effects Associated with Using Calcitriol?"

Long-Term Effects

  • See "What Are Side Effects Associated with Using Calcitriol?"

Cautions

  • Excessive vitamin D may suppress parathyroid hormone.
  • Risk of hyperphosphatemia, hypercalciuria.
  • Efficacy may be unpredictable in patients with malabsorption syndrome.
  • Adequate dietary calcium supplementation necessary for clinical response to vitamin D.
  • Use caution in malabsorption syndrome, renal/hepatic impairment.

Pregnancy and Lactation

  • Use calcitriol with caution during pregnancy if benefits outweigh risks. Animal studies show risk and human studies are not available or neither animal nor human studies were done.
  • Calcitriol enters breast milk; it is not recommended for use while breastfeeding.

SLIDESHOW

Vitamin D Deficiency: How Much Vitamin D Is Enough? See Slideshow
References
Medscape. Calcitriol.
https://reference.medscape.com/drug/calcijex-rocaltrol-calcitriol-345049
RxList. Rocaltrol Side Effects Drug Center.
https://www.rxlist.com/rocaltrol-side-effects-drug-center.htm
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