Definition of magnesium sulfate
: a sulfate of magnesium: as a : a white salt MgSO4 used in medicine and in industry b : epsom salts
First Known Use of magnesium sulfate
Medical Definition of magnesium sulfate
: a white anhydrous salt MgSO4 that occurs naturally in hydrated form as Epsom salts and that in the hydrated form MgSO4·7H2O is administered orally to relieve constipation or by injection to treat magnesium deficiency, to control convulsions associated with eclampsia, and to treat symptoms (as hypertension and convulsions) associated with nephritis in children
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