Healthy Inc > Product list > Calcium Carbonate BP/USP/IP
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What is Elemental Calcium and Vitamin D3 used for?

In the pharmaceutical industry, the combination of Elemental Calcium and Vitamin D3 (Cholecalciferol) is the primary therapy for bone mineralization and skeletal integrity.

As a pharmacist and manufacturer, I view this as a Nutraceutical-Pharmaceutical hybrid product. At your WHO-GMP facility in Mumbai, this is likely one of your high-volume assets, often formulated as 500 mg tablets with 250 IU or 400 IU of Vitamin D3.

Primary Clinical Uses

  • Osteoporosis Management: Prevents and treats bone loss in postmenopausal women and elderly men.

  • Hypocalcemia: Treats low blood calcium levels in patients with hypoparathyroidism or chronic kidney disease.

  • Osteomalacia & Rickets: Corrects softening of the bones in adults and children due to severe Vitamin D deficiency.

  • Pregnancy & Lactation: Supports the skeletal development of the fetus and prevents maternal bone density depletion.

  • Adjunct to Corticosteroid Therapy: Prevents bone loss caused by long-term steroid use (e.g., Prednisolone).

Mechanism: The Absorption Synergy

The reason these two are combined is that the body cannot effectively utilize calcium without Vitamin D3.

Vitamin D3 Role: Cholecalciferol is converted in the liver and kidneys into its active form, Calcitriol. This hormone increases the production of calcium-binding proteins in the small intestine.

Elemental Calcium Role: Once absorbed, calcium ions are transported into the bloodstream. From there, they are deposited into the bone matrix by osteoblasts, increasing Bone Mineral Density (BMD).

Hormonal Balance: This combination suppresses the release of Parathyroid Hormone (PTH). High PTH levels cause the body to “steal” calcium from the bones to keep blood levels stable; by providing enough oral calcium, we protect the bones from this process.

The Manufacturer’s Perspective: Technical & Export

From a production and B2B standpoint at your facility in Mumbai, there are critical technical distinctions to highlight on your digital platforms:

  • Calcium Carbonate vs. Citrate: Most high-volume exports utilize Calcium Carbonate because it contains the highest percentage of Elemental Calcium (40%). However, highlighting that you can manufacture Calcium Citrate (21% elemental) for patients with low stomach acid is a great way to attract “premium” B2B buyers.

  • The “Chewable” Strategy: Calcium tablets are notoriously large (“horse pills”). Promoting your flavored chewable range on your marketplace is a major USP, as it significantly improves patient compliance for elderly and pediatric populations.

  • Stability & Moisture Control: Vitamin D3 is highly sensitive to light and oxidation. At our facility, we utilize stabilized Vitamin D3 beadlets and Alu-Alu or opaque HDPE packaging to ensure a 36-month shelf life, especially for export to Zone IVb tropical regions.

  • Dossier Readiness: We provide full CTD/eCTD Dossiers to support your firm in bidding for government health tenders and nutritional supplement contracts in Africa, the Middle East, and Southeast Asia.

Calcium Carbonate with Vitamin D3 Tablets

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What is Calcium Carbonate and Vitamin D3 Tablets used for?

In the pharmaceutical industry, the combination of Calcium Carbonate and Vitamin D3 (Cholecalciferol) is a foundational mineral-vitamin supplement. As a pharmacist, I view this pairing as a critical synergistic formulation: Calcium provides the necessary structural raw material for bone, while Vitamin D3 acts as the “biological key” that allows the body to actually absorb and utilize that calcium.

Primary Clinical Uses

  • Osteoporosis Management: A primary therapy to increase bone mineral density and reduce the risk of fractures in elderly patients and post-menopausal women.

  • Treatment of Osteomalacia & Rickets: Used to correct bone softening caused by severe vitamin and mineral deficiencies.

  • Hypocalcemia: Indicated for the management of low blood calcium levels in patients with hypoparathyroidism or those on specific medications that deplete calcium.

  • Pregnancy & Lactation: Frequently prescribed to support the increased skeletal demands of the developing fetus and to maintain maternal bone health.

  • Acid Indigestion: Because it contains Calcium Carbonate, these tablets also function as an effective antacid to relieve heartburn.

Mechanism of Action

This combination is designed to optimize calcium homeostasis:

Calcium Carbonate: It contains a high concentration of elemental calcium (approx. 40%). In the acidic environment of the stomach, it dissolves to release calcium ions.

Vitamin D3 (Cholecalciferol): Once converted in the liver and kidneys to its active form, it binds to receptors in the small intestine to stimulate the synthesis of calbindin, a protein that transports calcium across the intestinal mucosa into the bloodstream.

The Manufacturer’s Perspective: Formulation & Export

From a manufacturing standpoint, this is a high-volume product where physical quality and “mouthfeel” are essential for B2B success:

  • Elemental Calcium Loading: We often formulate these as 500 mg elemental calcium (from 1250 mg Calcium Carbonate) plus 250 IU or 500 IU of D3. Ensuring tablet stability with such a high powder volume requires advanced binding agents.

  • Chewable vs. Film-Coated: For the export market, we manufacture both. Chewable tablets are popular for OTC (Over-the-Counter) retail and require sophisticated taste-masking and flavoring (orange or peppermint) to cover the chalky texture of calcium.

  • Stability & Cholecalciferol Integrity: Vitamin D3 is sensitive to light and oxidation. As a WHO-GMP manufacturer, we utilize stabilized, “beadlet” forms of D3 and moisture-resistant Alu-Alu or HDPE bottle packaging to ensure potency during transit to tropical climates.

  • Global Export Profile: This is a staple for B2B marketplaces and international health tenders. Our Mumbai facility provides full CTD/eCTD Dossiers to support registration in Africa, the Middle East, and Southeast Asia.

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