Magnesium sulphate is functional as an anticonvulsant, calcium channel blocker and a cardiovascular drug. This chemical is also used as an anaesthetic, anti-arrhythmia drug and tocolytic agent. This magnesium salt is functional as an anticonvulsant as well as a fertilizer. Magnesium sulphate has potassium magnesium sulfates as well as sodium magnesium sulfates. This is a white crystalline solid of no odor. This is an Epsom salt of neutral nature.