The drug of choice for prevention of seizures in a patient with severe preeclampsia is
given by i.v. infusion, it has been used for long to control convulsions and to reduce BP in toxaemia of pregnancy. As per WHO, it is the drug of choice for prevention and treatment of seizures in preeclampsia and eclampsia Ref: KD Tripathih 8th ed. page 333
Phenytoin
Magnesium sulphate
Diazepam
Nidedipine
Central Nervous system