<prompt> All statementss isare about use of ma sulphate exceptUsed in spinal anesthesiaUsed In seizure prophylaxisDecrease neuromuscular blockageUsed in Pre-emptive analgesia  <response>: Magnessium sulphate have a peripheral action at the neuromuscular junction,by competing with calcium for entry into the cells.It may also have central action. Refer page no 268 of Text book of obstetrics,sheila balakrishnan,2 nd edition. 