Magnesium Sulfate – Adult Dosages



Eclampsia, severe pre-eclampsia and pre-term labor loading dose:

4 gm of 10% Solution IV infusion over 20 minutes.

Dilute 50% Magnesium Sulfate to 10% prior to administration.

To facilitate delivery and maintain more constant flow rate, medication may be mixed to produce an IV infusion.


1 to 2 gm 10% solution IV per hour to maintain desired effect.

Torsades de Pointes – Ventricular Tachycardia/ Persistent Ventricular Fibrillation:

1-2 gm IV push of 10% solution.

Complete NCEMS Magnesium Sulfate Protocol