Magnesium sulphate has been used widely as a tocolytic agent in clinical settings even though magnesium sulphate has not been shown to prevent or delay preterm birth. However, magnesium sulphate has an established role in neuroprotection of the fetus when given to women at risk of very preterm birth.Click to see full answer. Also asked, is MgSO4 a Tocolytic?Magnesium sulfate as a tocolytic agent. Magnesium sulfate (MgSO4) has been successfully used to inhibit premature labor.Beside above, what is magnesium sulfate used for in pregnancy? Magnesium sulfate is a naturally occurring mineral used to control low blood levels of magnesium. Magnesium sulfate injection is also used for pediatric acute nephritis and to prevent seizures in severe pre-eclampsia, eclampsia, or toxemia of pregnancy. Then, why is magnesium sulfate given in preterm labor? Magnesium sulfate, or mag for short, is used in pregnancy to prevent seizures due to worsening preeclampsia, to slow or stop preterm labor, and to prevent injuries to a preterm baby’s brain.Does magnesium sulfate stop contractions?Magnesium sulfate is often quite effective in slowing contractions, although this effect and how long it lasts varies from woman to woman. Like all tocolytic medications, however, magnesium sulfate does not consistently prevent or delay preterm delivery for a significant period of time.