You should also tell your doctor: if you are on a low-salt diet if you have signs such as abnormal thirst, dry mouth, general weakness, drowsiness, muscle pain or cramps, nausea, vomiting, or an abnormally fast heart beat which may indicate an excessive effect of hydrochlorothiazide (contained in Irbesartan Hydrochlorothiazide BMS) if you are to undergo any surgery or receive anaesthetics