Antacid-induced acute hypercalcemia: An increasingly common and potentially dangerous occurrence.

Hypercalcemia is frequently encountered in both hospital wards and the primary care setting; 90% of cases can be attributed to primary hyperparathyroidism and malignancy. However, a minority are caused by medications, of which calcium supplements have been an increasingly common etiology. We are presenting a case of hypercalcemia resulted after acute oral intake of a moderate amount of antacids (calcium tablets) and normalized after supplement withdrawal.