Product image of Kalcizen (Colecalciferol, Calcium Carbonate) supplied by GNH India

Kalcizen

Active Ingredient:
Colecalciferol, Calcium Carbonate
Origin:
EU

Kalcizen (Colecalciferol, Calcium Carbonate)

Colecalciferol, the active ingredient in Kalcizen, is a vitamin D supplement presented as an oral tablet for oral use. It provides vitamin D3 together with calcium carbonate to support calcium absorption and bone health in adults and children with deficiency.

GNH India supplies Kalcizen as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Zentiva, K.S.

1
Pack/s
This product is added to your enquiry list

Request a Quote

Please fill out the form below and our team will get back to you shortly with pricing and further information.

A minimum order value applies. Our team will confirm the exact amount or quantity after reviewing your requirements.

Indications & Clinical Uses

Kalcizen is a combined vitamin D3 and calcium supplement that addresses calcium‑related metabolic pathways and bone health.

  • Osteoporosis: supports bone mineral density and helps reduce fracture risk.
  • Hypocalcemia: supplies calcium to correct low serum calcium levels.
  • Vitamin D deficiency: raises serum 25‑hydroxyvitamin D concentrations.
  • Post‑menopausal bone health: aids calcium absorption to maintain skeletal strength.

How It Works

  • Colecalciferol (vitamin D3) is converted in the liver to 25‑hydroxyvitamin D and then in the kidney to the active hormone calcitriol, which binds to vitamin D receptors in the intestine to increase transcription of calcium‑transport proteins, enhancing dietary calcium absorption. Calcium carbonate provides elemental calcium that is absorbed in the gastrointestinal tract, together restoring calcium homeostasis and supporting bone mineralization.

Side Effects

Kalcizen may cause adverse reactions, most of which are mild and reversible.

Common Side Effects

  • Nausea: mild stomach upset after ingestion.
  • Constipation: reduced bowel movements.
  • Flatulence: increased intestinal gas.
  • Hypercalcemia (mild): elevated serum calcium without symptoms.
  • Headache: occasional mild headache.

Serious or Rare Side Effects

  • Severe hypercalcemia: may cause confusion, cardiac arrhythmia, or renal impairment.
  • Kidney stones: calcium precipitation in the urinary tract.
  • Allergic reaction: rash, itching, or swelling.
  • Hypervitaminosis D: excessive vitamin D leading to toxicity.

Precautions & Warnings

Before initiating Kalcizen, consider the following precautions.

  • Assess calcium status: evaluate serum calcium levels to avoid excess.
  • Monitor vitamin D levels: check 25‑hydroxyvitamin D to guide supplementation.
  • Renal impairment: use with caution in patients with reduced kidney function.
  • Hypercalcemia: avoid in individuals with known high calcium levels.
  • Drug interactions: review concomitant medications that affect calcium balance.
  • Store below 25°C: keep in the original packaging, protect from moisture and direct sunlight.

Avoid Interactions

Kalcizen can interact with other medicines that influence calcium or vitamin D metabolism.

Major Interactions (Avoid)

  • Thiazide diuretics: may increase risk of hypercalcemia.
  • Excess vitamin A: combined high intake can precipitate hypervitaminosis D.

Moderate Interactions (Monitor Closely)

  • Bisphosphonates: calcium may reduce their gastrointestinal absorption.
  • Corticosteroids: may increase vitamin D requirements.
  • Anticonvulsants (e.g., phenytoin): can lower vitamin D levels, reducing efficacy.

Frequently Asked Questions

Kalcizen is a combined vitamin D3 (colecalciferol) and calcium carbonate oral supplement used to support calcium absorption, maintain bone health, prevent osteoporosis, and treat calcium or vitamin D deficiency in adults and children.

Colecalciferol (vitamin D3) is converted in the liver to 25‑hydroxyvitamin D and then in the kidney to the active hormone calcitriol, which binds to vitamin D receptors in the intestinal lining, increasing the expression of calcium‑transport proteins and thereby enhancing dietary calcium absorption.

The appropriate dose of Kalcizen is determined by the prescribing healthcare professional based on the individual’s age, serum calcium and vitamin D levels, and clinical needs. Patients should follow the prescriber’s instructions and not adjust the dose on their own.

Kalcizen may be used during pregnancy or lactation when prescribed, as vitamin D and calcium are essential nutrients. However, the prescriber should evaluate the mother’s nutritional status and any potential risks before recommending supplementation.

To order Kalcizen, submit an enquiry on the product page at gnhindia.com with the required quantity. GNH India supplies hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and necessary import documentation.

Kalcizen combines colecalciferol and calcium carbonate in a single oral formulation, offering both vitamin D3 and elemental calcium. Compared with products that contain only calcium or only vitamin D, Kalcizen provides a synergistic effect on calcium absorption, which can be more convenient for patients needing both nutrients.

Store Kalcizen below 25 °C in its original packaging, protecting it from moisture and direct sunlight. Keep the container tightly closed and out of reach of children. No special refrigeration is required for this oral tablet.

Kalcizen is taken orally, usually with a glass of water. It can be taken with or without food, but some patients find it easier to swallow with meals to reduce gastrointestinal discomfort.

The most serious risks include severe hypercalcemia, which can cause confusion, cardiac arrhythmias, or kidney damage, and the formation of kidney stones. Rare allergic reactions such as rash, swelling, or anaphylaxis may also occur and require immediate medical attention.

Kalcizen should be avoided in individuals with known hypercalcemia, severe renal impairment, or a documented hypersensitivity to colecalciferol, calcium carbonate, or any excipients in the tablet. Patients with certain metabolic disorders should consult their physician before use.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

Disclaimer

At GNH India, we aim to provide information that is expert-reviewed, accurate, and reliable. However, all content on this platform is intended for general informational purposes only and does not constitute professional medical advice, diagnosis, or treatment. While efforts are made to maintain accuracy and currency, the information may contain errors, omissions, or may not reflect the latest developments. Always consult a qualified healthcare professional regarding any medical concerns.

All product names, brand names, trademarks and registered trademarks displayed on this website are the property of their respective owners. This website and its operator are not affiliated with, endorsed by, or authorized by any such trade mark owners unless expressly stated. Any reference to product names or trademarks is made solely for descriptive and informational purposes. No commercial relationship, sponsorship, approval, or association with any trademark owner should be inferred. Information provided herein does not constitute promotion, advertising, or an offer for sale of any medicinal product and is intended solely for general informational purposes.

All trademarks and brand names displayed on this website are used strictly in accordance with the provisions of the Trade Marks Act, 1999, specifically Sections 30 and 30(1) governing fair use. Trademark ownership has been accurately attributed under the "Manufacturer/ TM Owner" section in compliance with statutory requirements.

Related Products

Other formulations containing Colecalciferol, Calcium Carbonate

A

A
A

A
A

A
A

A

Browse all products →

Ordering Process

Simple, Secure, and Seamless

Learn how our streamlined ordering process guarantees fast, compliant, and reliable access to essential medicines worldwide.

Quote request form

01

Submit Quote Request Form

Tell us what medications you need by filling out our simple form and uploading a valid document.

Price estimate review

02

We Review & Send Estimate

Our licensed pharmacists will verify your details and provide you with a detailed cost estimate.

Secure payment

03

Confirm & Make Payment

Discuss any queries, approve the estimate, and complete your payment.

Worldwide delivery

04

Get Delivered

Your medicines, safely packed and delivered to your door or nearest airport — hassle-free.

Regulatory recognitions

Quality You Can Trust

Our internationally recognized certifications underscore our commitment to safety, quality, and excellence.

SGS GSDP Certification

GSDP Compliant from SGS

URS ISO 9001

URS ISO 9001 Certification

FDA Maharashtra

Licensed by FDA Maharashtra

IEC License DGFT

IEC License issued by DGFT