<unk>  is a magnesium preparation in salt form with citric acid in a 1:1 ratio (1 magnesium atom per<unk>  molecule). The name<unk> " is ambiguous and sometimes may refer to other salts such as trimagnesium<unk>  which has a<unk>  ratio of 3:2.<unk>  is used medicinally as a saline laxative and to completely empty the bowel prior to a major surgery or colonoscopy. It is available without a prescription, both as a generic and under various brand names. It is also used in the pill form as a magnesium dietary supplement. It contains 11.23% magnesium by weight. Compared to trimagnesium<unk> , it is much more water-soluble, less alkaline, and contains less magnesium. As a food additive,<unk>  is used to regulate acidity and is known as E number E345.
Magnesium citrate
Magnesium sulfate
Magnesium sulfate 
Disufenton sodium
Sodium thiosulfate 
Ferrous tartrate
Calcium chloride
Potassium fluoride