Rodney Dathan

Milk–alkali syndrome is described as a triad of hypercalcaemia, metabolic alkalosis and renal impairment, resulting from the ingestion of calcium and absorbable alkali1. It was more common in the early part of the century when antacids were used for the symptomatic treatment of peptic ulcer disease. The use of antacids has since been overtaken by H2- receptor antagonists and proton pump inhibitors. More recently, there have been various case reports of milk-alkali syndrome due to the increasing use of calcium carbonate as part of the management of osteoporosis and chronic renal failure, and also the increasing availability of calcium carbonate ‘over the counter’. We describe a case of milk-alkali syndrome due to self-medication with calcium carbonate.