Magnesium sulfate is applied in replacement therapy for hypomagnesemia. It can be used orally as a laxative to relieve occasional constipation, and to treat low levels of magnesium. It works by replacing magnesium in the body and increasing water in the intestines. It is the first-line antiarrhythmic agent for torsades de pointes in cardiac arrest under the 2005 ECC guidelines and for managing quinidine-induced arrhythmias. It is effective in decreasing the risk that pre-eclampsia progresses to eclampsia.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.