Magnesium Deficiency: Adult: 2 mL injected intramuscularly every 6 hours for 4 doses.
Nephritic Seizures in Children: 0.05 - 0.1 mL per kg body weight injected intramuscularly as needed.
Pre-Eclampsia: 8 to 10 mL added into a 250 mL of 5% dextrose or 0.9% sodium chloride injection administered by intravenous infusion. Simultaneously, intramuscular dose of up to 20 mL of the undiluted solution may be given (10 mL in each buttock). Thereafter, 8 to 10 mL is injected intramuscularly into alternate buttocks depending on the presence of patellar reflex and adequate respiratory function. Therapy should be continued until paroxysms cease. Appropriate reduction in dosage should be done for patients with renal impairment.
NOTE: An isotonic solution of Magnesium Sulfate may be prepared by aseptically adding 7.3 mL of Magnesium Sulfate 250 mg/mL Injection into a 50 mL of Sterile Water for Injection or other suitable parenteral solvents.