Loading dose MgSO4 (IV) to be prepared as
4 ml 50% w/v plus 16 ml NS
8 ml 50% w/v plus 12 ml NS
12 ml 50% w/v plus 8 ml NS
16 ml 50% w/v plus 4 ml NS
Loading dose of Mgso4: Total: 14 gms Ampule commercially available is: Each 2 ml of injection (50%) = 1 gm of MgSO4 4 gm I/V as a 20 % solution that is 4 ampules (8 mL=4 gm) + 12 mL NS making it 20 % solution + 10 gm I/M (5gm IM in each buttock as 50 % solution)