Calcid
Generic Name
Calcium Carbonate 1000 mg (equivalent to 400 mg elemental Calcium)
Manufacturer
Square Pharmaceuticals Ltd.
Country
Bangladesh
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Price Details
Current market pricing information
| Variant | Unit Price | Strip Price |
|---|---|---|
| calcid 1000 mg chewable tablet | ৳ 2.01 | ৳ 20.10 |
Description
Overview of the medicine
A chewable tablet containing calcium carbonate, used as a calcium supplement to prevent or treat calcium deficiency and as an antacid for heartburn and indigestion.
Uses & Indications
Dosage
Adults
As a calcium supplement: 1-2 tablets daily, or as directed by physician. As an antacid: Chew 1-2 tablets as needed, up to 7 tablets daily.
Elderly
Similar to adult dosage, but caution for renal function and hypercalcemia risk.
Renal_impairment
Use with caution. Dosage reduction may be required due to increased risk of hypercalcemia and calcium accumulation. Consult a physician.
How to Take
Chew the tablet thoroughly before swallowing. Can be taken with or without food. As an antacid, take after meals or at bedtime.
Mechanism of Action
Calcium carbonate acts as a direct source of calcium ions for bone mineralization and various physiological processes. As an antacid, it neutralizes gastric acid by forming calcium chloride and water.
Pharmacokinetics
Onset
Antacid effect: within minutes; Nutritional effect: gradual.
Excretion
Primarily via feces (unabsorbed calcium) and urine (excess absorbed calcium).
Half life
Serum half-life is variable, regulated by parathyroid hormone and vitamin D.
Absorption
Absorbed in the small intestine, primarily in the duodenum, requiring an acidic environment for solubility and absorption. Absorption varies (20-40%) and is affected by vitamin D.
Metabolism
Not metabolized in the classical sense. Calcium ions are incorporated into body stores or excreted.
Side Effects
Contraindications
- Hypercalcemia
- Severe hypercalciuria
- Renal calculi (kidney stones)
- Hypersensitivity to calcium carbonate
- Primary hyperparathyroidism
Drug Interactions
Bisphosphonates
Reduces absorption of bisphosphonates. Separate administration by at least 30 minutes to 2 hours.
Iron supplements
Calcium can inhibit iron absorption. Separate administration by at least 2 hours.
Thiazide diuretics
May increase risk of hypercalcemia.
Tetracyclines/Fluoroquinolones
Calcium can chelate these antibiotics, reducing their absorption. Administer calcium at least 2-4 hours apart.
Thyroid hormones (Levothyroxine)
Calcium can reduce absorption of thyroid hormones. Separate administration by at least 4 hours.
Storage
Store in a cool, dry place below 30°C, away from direct sunlight and moisture. Keep out of reach of children.
Overdose
Symptoms include nausea, vomiting, constipation, abdominal pain, muscle weakness, polyuria, polydipsia, and in severe cases, cardiac arrhythmias, and coma. Treatment involves discontinuation of calcium, hydration, and management of symptoms.
Pregnancy & Lactation
Generally considered safe and often recommended during pregnancy and lactation to meet increased calcium needs. Consult physician for appropriate dosage.
Side Effects
Contraindications
- Hypercalcemia
- Severe hypercalciuria
- Renal calculi (kidney stones)
- Hypersensitivity to calcium carbonate
- Primary hyperparathyroidism
Drug Interactions
Bisphosphonates
Reduces absorption of bisphosphonates. Separate administration by at least 30 minutes to 2 hours.
Iron supplements
Calcium can inhibit iron absorption. Separate administration by at least 2 hours.
Thiazide diuretics
May increase risk of hypercalcemia.
Tetracyclines/Fluoroquinolones
Calcium can chelate these antibiotics, reducing their absorption. Administer calcium at least 2-4 hours apart.
Thyroid hormones (Levothyroxine)
Calcium can reduce absorption of thyroid hormones. Separate administration by at least 4 hours.
Storage
Store in a cool, dry place below 30°C, away from direct sunlight and moisture. Keep out of reach of children.
Overdose
Symptoms include nausea, vomiting, constipation, abdominal pain, muscle weakness, polyuria, polydipsia, and in severe cases, cardiac arrhythmias, and coma. Treatment involves discontinuation of calcium, hydration, and management of symptoms.
Pregnancy & Lactation
Generally considered safe and often recommended during pregnancy and lactation to meet increased calcium needs. Consult physician for appropriate dosage.
Frequently Asked Questions
Common questions about this medicine
Pack Sizes
Shelf Life
Typically 2-3 years from manufacturing date.
Availability
Pharmacies, Supermarkets
Approval Status
Approved
Patent Status
Off-patent
WHO Essential Medicine
YesClinical Trials
Numerous trials support the efficacy of calcium carbonate in preventing and treating calcium deficiency and osteoporosis.
Lab Monitoring
- Serum calcium levels
- Renal function (creatinine, BUN)
- Urinary calcium excretion (if kidney stones are a concern)
- Vitamin D levels (to optimize absorption)
Doctor Notes
- Advise patients to chew tablets thoroughly for optimal absorption and antacid effect.
- Monitor serum calcium and renal function, especially in patients with pre-existing renal impairment or those on concomitant medications.
Patient Guidelines
- Do not exceed recommended dose without consulting a doctor.
- Chew tablets thoroughly before swallowing.
- Maintain adequate fluid intake to prevent constipation.
- Inform your doctor about all other medications, especially antibiotics, thyroid hormones, and iron supplements.
Missed Dose Advice
If used as a supplement, take the missed dose as soon as remembered. If it is almost time for the next dose, skip the missed dose and resume your regular dosing schedule. Do not double the dose. If used as antacid, take as needed.
Driving Precautions
Calcium carbonate does not typically affect the ability to drive or operate machinery.
Lifestyle Advice
- Engage in weight-bearing exercises to support bone health.
- Ensure adequate Vitamin D intake through diet, sunlight exposure, or supplementation.
- Reduce intake of sodium and caffeine, which can increase calcium excretion.
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Global Brand Names
International brand names for this medicine. Click a brand to search for detailed information.