ATROPINE SULPHATE INJECTION IS USED TO TREAT BRADYCARDIA (SLOW HEART RATE). IT HELPS TO RESTORE NORMAL HEARTBEAT IN CARDIAC ARREST CASES. ATROPINE SULPHATE INJECTION HELPS TO BRING BACK THE BLOOD PRESSURE WITHIN NORMAL RANGE. THIS RELAXES THE HEART, TREATS DECREASED HEART RATE (BRADYCARDIA) AND PREVENTS ANY SUDDEN FALL OF BLOOD PRESSURE OR EVEN SERIOUS COMPLICATIONS THAT MIGHT HAVE OTHERWISE FOLLOWED DUE TO LOW BLOOD PRESSURE.