Avoid abrupt w/drawal in patients w/ ischaemic heart disease. Patients w/ HTN or angina pectoris & accompanying heart failure. DM w/ large fluctuations in blood glucose values, hypoglycemia, strict fasting, ongoing desensitisation therapy, 1st-degree AV block, Prinzmetal's angina, peripheral arterial occlusive disease; IDDM, severe renal or hepatic impairment, restrictive cardiomyopathy, congenital heart disease, haemodynamically significant organic valvular disease, MI w/in 3 mth; bronchial asthma or other COPD; existing or history of psoriasis, Do not administer in patients w/ phaeochromocytoma until after α-receptor blockade. May mask thyrotoxicosis symptoms. Reduced incidence of arrhythmias & myocardial ischemia in patients undergoing general anaesth during induction & intubation & post-op period. May affect ability to drive or operate machinery. Pregnancy. Breastfeeding is not recommended during administration. Not recommended for childn.