The powder contains sugar; two antacids, sodium bicarbonate (22.6% w/w) and citric acid (19.5% w/w); and a laxative, magnesium sulphate (17.4% w/w). The product is similar to Eno's salts and Kruschen salts, and a mild form of Epsom salts. The term "liver salts" or "health salts" is typically used for a laxative.