Decreases serum-phosphate concentration with excessive, prolonged use. Store safely out of reach of children. Don't store in bathroom medicine cabinet. Heat and moisture may change action of mineral. Avoid taking calcium within 1 or 2 hours of meals or ingestion of other medicines, if possible.
Some calcium carbonate is derived from oyster shells.
Confusion, high blood pressure, increased sensitivity of eyes and skin to light, increased thirst, slow or irregular heartbeat, depression, bone or muscle pain, nausea, vomiting, skin itching, skin rash, increased urination. Call doctor when convenient. Call doctor when convenient. Call doctor immediately. Dry mouth Discontinue.