Product image of Kombi-Kalz (Colecalciferol, Calcium Carbonate) supplied by GNH India

Kombi-Kalz

Active Ingredient:
Colecalciferol, Calcium Carbonate
Origin:
EU

Kombi-Kalz (Colecalciferol, Calcium Carbonate)

Colecalciferol, the active ingredient in Kombi-Kalz, is a Vitamin D3 presented as an oral supplement for supporting calcium metabolism and bone health. It is combined with calcium carbonate, a source of elemental calcium, to address calcium and vitamin D deficiencies in adults.
GNH India supplies Kombi-Kalz as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Viatris Austria Gmbh

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Indications & Clinical Uses

Kombi‑Kalz is used as a nutritional supplement to address disorders of calcium and vitamin D metabolism.

  • Calcium deficiency: helps restore normal calcium levels and supports bone mineralisation.
  • Vitamin D deficiency: provides vitamin D3 to raise serum 25‑hydroxyvitamin D concentrations.
  • Osteoporosis prevention: contributes to bone density maintenance in at‑risk populations.
  • Support of bone health: assists overall skeletal strength during ageing or periods of increased demand.

How It Works

  • Calcium carbonate dissociates in the acidic gastric environment, releasing elemental calcium that is absorbed in the small intestine. Colecalciferol (vitamin D3) is hydroxylated in the liver and kidneys to its active form, calcitriol, which up‑regulates intestinal calcium transport proteins, enhancing calcium absorption and promoting bone mineralisation.

Side Effects

Kombi‑Kalz may cause adverse reactions, most of which are mild and reversible.

Common Side Effects

  • Gastrointestinal discomfort: nausea, abdominal bloating or mild cramps.
  • Constipation or loose stools.
  • Flatulence.
  • Mild hypercalcaemia: transient elevation of serum calcium without symptoms.
  • Headache.

Serious or Rare Side Effects

  • Significant hypercalcaemia: fatigue, polyuria, cardiac arrhythmia.
  • Nephrolithiasis (kidney stones) due to calcium excess.
  • Allergic reactions: rash, pruritus, facial swelling.
  • Hypervitaminosis D: severe nausea, vomiting, weakness.
  • Severe abdominal pain requiring medical evaluation.

Precautions & Warnings

Before initiating Kombi‑Kalz, consider the following safety measures.

  • Assess baseline calcium and vitamin D status: obtain serum levels to guide supplementation.
  • Monitor renal function: adjust dose in patients with impaired kidney clearance.
  • Avoid excessive supplemental calcium: risk of hypercalcaemia and vascular calcification.
  • Use with caution in hyperparathyroidism or granulomatous diseases.
  • Store at room temperature: keep in the original container, protect from moisture and direct sunlight.

Avoid Interactions

Kombi‑Kalz can interact with several medicines; awareness of the interaction level helps manage risk.

Major Interactions (Avoid)

  • Thiazide diuretics: may increase serum calcium and precipitate hypercalcaemia.
  • High‑dose vitamin A supplements: combined excess can lead to hypervitaminosis D.
  • Digitalis glycosides: elevated calcium may enhance cardiac toxicity.

Moderate Interactions (Monitor Closely)

  • Orlistat: reduces absorption of fat‑soluble vitamin D, potentially lowering efficacy.
  • Antacids containing aluminium or magnesium: may bind calcium and reduce its bioavailability.
  • Systemic corticosteroids: increase calcium loss, possibly requiring dose adjustment.

Frequently Asked Questions

Kombi‑Kalz is an oral nutritional supplement that provides vitamin D3 (colecalciferol) and calcium carbonate. It is intended to correct calcium and vitamin D deficiencies, support bone health, and help prevent osteoporosis in adults who need additional mineral support.

Colecalciferol (vitamin D3) is converted in the liver and kidneys to the active hormone calcitriol. Calcitriol binds to vitamin D receptors in the intestinal lining, increasing the expression of calcium‑transport proteins, which enhances dietary calcium absorption and promotes bone mineralisation.

The appropriate dose of Kombi‑Kalz is determined by the prescribing healthcare professional based on the patient’s serum calcium and vitamin D levels, age, renal function and overall clinical condition. Patients should follow the prescriber’s instructions and not self‑adjust the dose.

Safety data for Kombi‑Kalz in pregnancy and lactation are limited. Healthcare providers usually assess the risk‑benefit ratio before prescribing. If supplementation is required, the prescriber will select a dose that meets the nutritional needs while minimising any potential risk to the fetus or infant.

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

Kombi‑Kalz combines calcium carbonate with colecalciferol in a single oral formulation, offering both mineral and vitamin D3 in one product. Compared with separate calcium and vitamin D supplements, it simplifies dosing and may improve adherence, while providing comparable bioavailability when taken with food.

Kombi‑Kalz should be stored at room temperature, below 25 °C, in its original packaging. Keep the container tightly closed, protect it from moisture, heat and direct sunlight to maintain product stability throughout its shelf life.

Kombi‑Kalz is taken orally, usually with a meal to enhance calcium absorption. The tablet or capsule should be swallowed whole with water unless the prescriber advises an alternative method such as splitting or crushing for patients with swallowing difficulties.

The most serious risks include significant hypercalcaemia, which can cause cardiac arrhythmias, kidney stones, and neurological symptoms, as well as rare allergic reactions. Patients should report any signs of persistent nausea, vomiting, excessive thirst, frequent urination or swelling to a healthcare professional promptly.

Kombi‑Kalz is contraindicated in individuals with known hypersensitivity to colecalciferol, calcium carbonate or any excipients, as well as patients with hypercalcaemia, severe renal impairment, or active hyperparathyroidism unless specifically directed by a physician.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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