Each chewable tablet contains calcium carbonate 1250 mg equivalent to elemental calcium 500 mg and vitamin D3 250 IU.
Pharmacology: Absorption: Approximately 20-30% of orally administered calcium is absorbed in the small intestine.
Protein-Binding: Approximately 45% of calcium is bound to plasma proteins.
Elimination: The unabsorbed calcium is principally excreted via renal (20%) and fecal (80%) routes.
Calcium carbonate is indicated in the following conditions of calcium deficiency: As an adjunct in prevention of postmenopausal osteoporosis; prevention and treatment of osteoporosis, osteomalacia in patients with an inadequate calcium intake. Pregnancy and lactation.
Hypocalcemia (dose depends in the normal daily recommended intakes and the severity of deficiency): Adults and Adolescents: 1-2 g daily.
Adults: Dietary Supplementation: 500 mg to 2 g, divided 2-4 times daily.
Reduction of Osteoporosis/Bone Loss with Aging: 1000-1500 mg daily.
Administration: Because the rate and/or extent of absorption of other oral medications may vary when used concurrently with calcium supplements, especially calcium carbonate, patients should be advised not to take any other oral medications within 1-2 hrs of calcium supplements.
Dosage is expressed in terms of elemental calcium. It is recommended that calcium supplements should be taken in small doses (not more than 500 mg at a time) throughout the day with 6-8 cups of water to avoid constipation.
Symptoms: Symptoms of calcium overdosage include nausea, vomiting, decrease appetite, constipation, confusion, delirium, stupor and coma.
In case of overdosage, seek medical attention immediately.
Patients with achlorhydria or hypochlorhydria unless the supplement is taken with meals.
Patients with hyperparathyroidism, unless the need for calcium supplement is high and the patient are carefully monitored.
Primary or secondary hypercalcemia; hypercalciuria; renal calculi, risk of exacerbation of calcium; sarcoidosis (may potentiate hypercalcemia).
Patients suffering from any renal dysfunction and hypoparathyroid patients should be careful when taking Ritecal.
Mild and transient effects of gastrointestinal disturbances, viz; flatulence may be seen in some individuals.
Advise physician what prescription and nonprescription drugs the patient is taking especially digoxin, etidronate, phenytoin, tetracycline and vitamins.
Do not take calcium within 1-2 hrs of taking other medicines especially some antibiotics. Calcium may decrease the effectiveness of same antibiotics (eg, tetracyclines).
Store in cool and dark place.
Shelf-Life: 2 years.
A12AX - Calcium, combinations with vitamin D and/or other drugs ; Used as dietary supplements.