Natecal D3 (Colecalciferol, Calcium Carbonate)

Colecalciferol, the active ingredient in Natecal D3, is a vitamin D and calcium supplement presented as an oral dosage form for oral use. Together with calcium carbonate, it supplies the nutrients required for efficient calcium absorption and bone mineralisation, helping to correct calcium and vitamin D deficiencies and to reduce the risk of osteoporosis in adults and elderly patients.

GNH USA supplies Natecal D3 as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide, including both private and public health institutions.

Natecal D3 is used to address conditions related to calcium and vitamin D metabolism.

- Calcium deficiency: helps restore normal calcium levels and supports bone health. - Vitamin D deficiency: provides vitamin D3 to improve serum 25‑hydroxyvitamin D concentrations. - Osteoporosis prevention: contributes to bone mineral density maintenance and reduces fracture risk in at‑risk populations. - Osteomalacia: aids in bone mineralisation in adults with insufficient vitamin D. - Hypocalcaemia: assists in raising serum calcium levels in patients with low calcium.

Natecal D3 may be associated with several adverse reactions, which are generally dose‑related and vary in frequency.

Common Side Effects: - Nausea: mild gastrointestinal upset occurring shortly after ingestion. - Constipation: reduced bowel movements, often transient. - Abdominal discomfort: mild cramps or bloating. - Headache: occasional mild headache. - Dry mouth: sensation of oral dryness.

Serious or Rare Side Effects: - Hypercalcemia: elevated blood calcium levels that can cause weakness, confusion, or cardiac arrhythmia. - Kidney stones: formation of calcium‑based calculi in susceptible individuals. - Allergic reaction: rash, itching, or swelling indicating hypersensitivity. - Hypervitaminosis D: excessive vitamin D leading to toxicity symptoms. - Cardiac arrhythmia: irregular heart rhythm in severe hypercalcemia.

Before using Natecal D3, consider the following precautions.

- Renal impairment: monitor serum calcium and vitamin D levels regularly. - Hypercalcemia: discontinue if symptoms such as fatigue, polyuria, or nausea appear. - Granulomatous disease: avoid in sarcoidosis or similar conditions due to increased conversion to active vitamin D. - Pregnancy and lactation: use only if clearly indicated by a healthcare professional. - Concomitant medications: review all current drugs for potential interactions. - Store at ambient temperature: keep in the original container, protect from moisture and light.

Natecal D3 can interact with other medicines; awareness of major and moderate interactions helps ensure safety.

Major Interactions (Avoid): - Thiazide diuretics: may precipitate severe hypercalcemia. - Vitamin A excess: increases risk of hypervitaminosis D. - Aluminum‑containing antacids: impair calcium carbonate absorption.

Moderate Interactions (Monitor Closely): - Bisphosphonates: may reduce calcium uptake if taken simultaneously. - Corticosteroids: may increase vitamin D metabolism, requiring monitoring of calcium and vitamin D status.