-2%
Calcium Carbonate neutralizes gastric acid by reacting with hydrochloric acid in the stomach:
CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂
This reaction increases gastric pH, reducing the activity of pepsin and alleviating acidity. Up to 30% of the orally administered calcium may be absorbed from the gastrointestinal tract.
Orthocal Tablet (Calcium Carbonate)
Orthocal 250 mg or 500 mg tablets are indicated for the treatment and prevention of calcium deficiency when dietary intake is inadequate.
Conditions that may require supplementation include:
- Hypoparathyroidism
- Achlorhydria, chronic diarrhea, steatorrhea, and sprue
- Vitamin D deficiency
- Pregnancy, lactation, and menopause
- Pancreatitis, renal failure, alkalosis, and hyperphosphataemia
Orthocal is also used in the management of hyperphosphataemia in patients with chronic renal failure, including those on hemodialysis or continuous ambulatory peritoneal dialysis (CAPD). In such cases, it helps bind excess phosphate and may be used alongside dietary phosphate restriction or aluminum hydroxide if required.
Additionally, Orthocal can provide short-term relief of dyspeptic symptoms, though it is not recommended for long-term use in peptic ulcer disease.
Orthocal 1000 mg tablet is indicated for the symptomatic relief of acidity-related disorders such as:
- Acid indigestion
- Heartburn
- Sour or upset stomach