Calcitriol – Active Form of Vitamin D3 for Osteoporosis Treatment and Calcium Metabolism Disorders

1. General introduction of Calcitriol

Calcitriol is the biologically active form of vitamin D3 (1,25-dihydroxyvitamin D3) and plays a crucial role in regulating calcium and phosphorus balance in the human body. It represents the final metabolic product of vitamin D3 and exhibits the highest biological activity among vitamin D metabolites.

In the pharmaceutical and biotechnology industries, calcitriol is widely used as an important active pharmaceutical ingredient (API) in medications designed to treat bone disorders and mineral metabolism abnormalities.

Through its pharmacological mechanisms, calcitriol can:

• Increase intestinal calcium absorption
• Regulate parathyroid hormone secretion
• Promote bone mineralization

Thanks to these effects, calcitriol has become a key active ingredient in the treatment of conditions such as: Osteoporosis, Osteomalacia, Rickets, Hypoparathyroidism, Calcium metabolism disorders associated with chronic kidney disease.

Currently, calcitriol API is used in the manufacturing of various pharmaceutical dosage forms including:

• Soft capsules
• Tablets
• Oral solutions
• Injectable formulations

2. Active ingredient composition of calcitriol

The main active component of the product is: Calcitriol (1,25-Dihydroxyvitamin D3)

It is the most potent hormonal form of vitamin D in the human body, produced through the hydroxylation of vitamin D3 in the liver and kidneys.

Chemical characteristics of calcitriol: 

• Molecular Formula: C27H44O3
• Molecular Weight: 416.64 g/mol
• Pharmacological Class: Vitamin D receptor agonist
• Chemical Classification: Vitamin D analogue

Calcitriol exerts its biological activity by binding to the vitamin D receptor (VDR) in target cells, thereby regulating the expression of genes involved in mineral metabolism and bone development.

3. Advantages of calcitriol 

Calcitriol is considered one of the most important vitamin D–related active ingredients used in the treatment of bone disorders due to several significant advantages:

• High biological potency:Unlike vitamin D precursors such as cholecalciferol or ergocalciferol, calcitriol is already in its fully active form, allowing it to exert therapeutic effects rapidly within the body.
• Enhanced calcium absorption:Calcitriol stimulates the expression of calcium-transport proteins in the small intestine, improving the absorption of calcium from dietary sources.
• Regulation of parathyroid hormone:The compound helps suppress excessive secretion of parathyroid hormone (PTH), contributing to the maintenance of calcium homeostasis in the bloodstream.
• Wide therapeutic applications: Calcitriol is widely used in treatment regimens for Postmenopausal osteoporosis, Corticosteroid-induced osteoporosis, Osteomalacia, Mineral metabolism disorders.
• Compatibility with multiple dosage forms: Calcitriol can be formulated into several pharmaceutical dosage forms such as Soft capsules, Tablets, Oral solutions, Injectable formulations.

4. Applications of Calcitriol

Calcitriol has numerous important applications in medicine: 

• Osteoporosis treatment:Calcitriol helps increase bone mineral density and improve bone mineralization, thereby reducing the risk of fractures in patients with osteoporosis.
• Treatment of hypoparathyroidism:In patients with hypoparathyroidism, calcitriol helps regulate blood calcium levels and alleviate symptoms associated with hypocalcemia.
• Supportive therapy for chronic kidney disease:Patients with kidney failure often experience impaired vitamin D metabolism. Calcitriol helps restore calcium and phosphorus balance in the body.
• Treatment of rickets and osteomalacia: Calcitriol supports bone mineralization in both children and adults suffering from vitamin D deficiency disorders.

5. Commercial products using Calcitriol

6. Product Contact Information

For more information about Calcitriolsupply, please contact us:

• Hotline: +84 (0) 834 560 500
• Email:director@biorichgroup.com
• Website: www.biorichgroup.com
• Sample / COA Request: Please contact us via email to receive the latest samples and Certificate of Analysis (COA).