3: Anti-convulsant -first choice. magnesium sulfate contraindication as follow absent or very sluggish knee jerk 2)a respiratory rate below 16/min (3 a urinary output of less than 100ml in the preceding 4 hours(25mW/hr) Oml vial of 10%o calcium gluconate solution is ecessary Routes for giving magnesium sulfate Intravenous 2) Intramuscular3: Anti-convulsant –first choice :magnesium sulfate: contraindication as follow : (1) absent or very sluggish knee jerk (2) a respiratory rate below 16/min (3) a urinary output of less than 100ml in the preceding 4 hours (25ml/hr) 10ml vial of 10% calcium gluconate solution is necessary . Routes for giving magnesium sulfate : (1) Intravenous : (2) Intramuscular :