Andrews Salts Original works as a laxative and antacid; it works quickly and effectively and can help you relieve uncomfortable symptoms such as; Indigestion, excess acid and constipation to leave you feeling free and released. We often over-indulge which can cause uncomfortable bloating and upset stomach; Andrews Salts Original will help you feel restored in no time. The original Andrews Salts, often referred to as Andrews Liver Salts, are a powdered effervescent substance made up of citric acid, sodium hydrogen carbonate, and magnesium sulphate. Constipation, indigestion, and/or upset stomach can all be efficiently treated with Andrews Salts.