Milk-alkali syndrome is the triad of hypercalcaemia, renal failure and metabolic alkalosis secondary to ingestion of large amounts of calcium and absorbable alkali.
Historically it was due to milk and alkali being given for peptic ulcer disease. It is now becoming more prevalent again due to widespread use of calcium carbonate in the prevention of osteoporosis. Some estimate it to now be the third most common cause of in-hospital hypercalcaemia.
Treatment is to stop the causative agent and hydrate the patient.