CALCITRIOL

Overview

Calcitriol is a medication version of natural vitamin D, essential for bone health, calcium absorption, and parathyroid hormone regulation. It’s usually prescribed to people with kidney issues, certain bone conditions, or low calcium levels who can’t activate vitamin D naturally in their bodies.

Classification
Calcitriol is the active form of vitamin D3. It’s a vitamin-based hormone used as a nutritional supplement and therapeutic agent to support calcium balance in the body.

Uses
Treats or prevents low blood calcium (hypocalcemia)

Helps manage bone disorders, such as rickets or osteodystrophy

Used in people with chronic kidney disease who have trouble processing vitamin D

Supports patients with parathyroid gland problems (like hypoparathyroidism)

Helps improve calcium absorption in people with intestinal disorders

How It Works
Calcitriol works by helping the body absorb more calcium and phosphate from food through the intestines. It also helps maintain proper calcium levels in the blood and supports bone strength. In people with kidney problems, it replaces the active vitamin D their body can’t make on its own.

Dosage
As prescribed by your doctor.

Side effects
While usually well tolerated, some people may notice:
Nausea or vomiting

Headache or weakness

Increased thirst or frequent urination

Loss of appetite

In rare cases: high calcium levels (hypercalcemia), which can cause confusion, tiredness, or irregular heartbeat

Precautions
Regular blood tests are important to monitor calcium and phosphate levels

Tell your doctor if you have a history of heart disease, kidney stones, or high calcium levels

Be cautious with calcium or vitamin D supplements—too much can be harmful

Drink plenty of fluids unless advised otherwise

Use during pregnancy or breastfeeding only with medical advice

Avoid taking magnesium-containing antacids unless approved by your doctor

Disclaimer
This content is for informational purposes only. Always consult a healthcare provider for medical advice and proper dosage