Healthy Inc > Blog > treatment of calcium deficiency
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How many times a day should I take Shelcal 500?

In the pharmaceutical industry, Shelcal 500 is a leading brand of Calcium and Vitamin D3 supplements. As a pharmacist and manufacturer, I can tell you that the standard adult dosage is typically one tablet once or twice daily.

However, the “best” frequency depends on how your body absorbs the elemental calcium.

Standard Dosage Guidelines

Goal Typical Dose Frequency
Daily Maintenance 500 mg Once Daily
Osteoporosis / Pregnancy 1000 mg Twice Daily (split into morning and evening)

The “500 mg Rule” for Absorption

The human body has a physical limit on how much calcium it can absorb at one single time.

  • Saturation Point: The efficiency of calcium absorption decreases significantly as the dose increases. The body absorbs calcium best in doses of 500 mg or less.

  • Why Split the Dose? If you are prescribed 1000 mg per day, taking two Shelcal 500 tablets at once is wasteful. Taking one in the morning and one in the evening ensures that your body absorbs the maximum amount of elemental calcium from each tablet.

The Pharmacist’s “Golden Rules” for Shelcal 500

As you develop your digital platforms and e-commerce marketplace, providing these “Technical Tips” will establish your firm’s authority:

Take with Food: Shelcal 500 contains Calcium Carbonate, which requires stomach acid for optimal absorption. Taking it after a meal is highly recommended.

Hydration: Always take the tablet with a full glass of water to reduce the risk of constipation, a common side effect of calcium supplements.

Interaction Gap: As a pharmacist, you know that calcium can interfere with the absorption of other drugs. It should be taken at least 2 hours apart from antibiotics (like Ciprofloxacin) or Iron supplements.

[Image showing the interaction of calcium with other minerals and antibiotics in the gut]

The Manufacturer’s Perspective: Technical & Export

From a production and B2B standpoint at your WHO-GMP facility in Mumbai, Shelcal 500 is a benchmark for quality:

  • Elemental Yield: Shelcal 500 provides 500 mg of elemental calcium from 1250 mg of Calcium Carbonate. On your marketplace, highlighting the elemental value is a major USP, as many low-quality generics only list the total salt weight.

  • Stability of D3: Cholecalciferol (Vitamin D3) is highly unstable. At our facility, we utilize Alu-Alu blister packaging and specialized stabilized Vitamin D3 granules to ensure the product maintains its potency for 36 months in tropical Zone IVb regions.

  • Dossier Support: Since bone health is a priority for global health tenders, we provide full CTD/eCTD Dossiers to support your firm in registering this as a high-quality alternative to major brands.

Calcium Carbonate with Vitamin D3 Tablets

Posted on:

How many times a day should I take Shelcal 500?

In the pharmaceutical industry, Shelcal 500 is a leading brand of Calcium Carbonate (500 mg Elemental Calcium) and Vitamin D3 (250 IU). As a pharmacist and manufacturer, I can tell you that the frequency of dosing is determined by the “Saturation Point” of human calcium absorption.

For most adults, the standard dosage is one tablet, once or twice daily.

The “500 mg Rule” (Pharmacist’s Insight)

As a manufacturer at your WHO-GMP facility in Mumbai, you know that the body’s efficiency in absorbing calcium decreases as the dose increases.

  • Maximum Absorption: The human small intestine can only absorb about 500 mg to 600 mg of elemental calcium at one time.

  • The Dosing Strategy: If a doctor prescribes 1000 mg daily, taking two Shelcal 500 tablets at the same time is wasteful. It is far more effective to split the dose: one in the morning and one in the evening.

  • With Food: Shelcal 500 (Calcium Carbonate) requires stomach acid for optimal absorption. It should always be taken after a meal.

Standard Dosing by Requirement

User Profile Typical Frequency Clinical Goal
General Supplementation Once daily (500 mg) Maintenance of bone health.
Pregnancy / Lactation Once or Twice daily Support fetal skeletal growth and maternal density.
Osteoporosis / Elderly Twice daily (1000 mg) Treatment of bone loss and fracture prevention.

Mechanism of Action: The Calcium-D3 Synergy

Shelcal works through a dual-mechanism to ensure the calcium actually reaches the bones:

Ionization: In the presence of stomach acid, Calcium Carbonate dissolves into ionized calcium.

D3-Mediated Transport: Vitamin D3 (Cholecalciferol) stimulates the production of calbindin, a protein that “carries” calcium across the intestinal wall into the bloodstream.

Deposition: Once in the blood, the calcium is utilized for muscle contraction and heart rhythm, with the excess being deposited into the bone matrix by osteoblasts.

The Manufacturer’s Perspective: Technical & Export

From a production and B2B standpoint at your facility, Shelcal-type generics are strategic “Bread and Butter” products:

  • The “Elemental” USP: On your digital platforms and marketplace, always emphasize that your tablet contains 500 mg of ACTUAL Elemental Calcium (from 1250 mg of Calcium Carbonate). This technical clarity is highly valued by international B2B buyers who compare generic dossiers.

  • Formulation Stability: Vitamin D3 is prone to degradation. At our facility, we use stabilized Vitamin D3 granules to ensure the label claim remains accurate throughout the 36-month shelf life, even in tropical Zone IVb climates.

  • Packaging Advice: For export to high-humidity regions, we recommend Alu-Alu blister packaging or HDPE bottles with induction sealing to protect the integrity of the Cholecalciferol.

  • Dossier Readiness: We provide full CTD/eCTD Dossiers to support your firm in bidding for government health tenders and large-scale pharmacy chain contracts.

Calcium Carbonate with Vitamin D3 Tablets

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