Monitor patients w/ CV diseases (eg, CHD, Prinzmetal's angina & cardiac failure) for signs of deterioration; hypotension. Discontinue treatment at first sign of cardiac failure. Severe peripheral circulatory disturbance/disorders eg, severe forms of Raynaud's disease or syndrome. Bronchospasm in patients w/ asthma. Glaucoma patients w/ excessive restriction of pulmonary function. Spontaneous hypoglycaemia or labile diabetes. May mask signs & symptoms of acute hypoglycaemia & hyperthyroidism (eg, tachycardia). May potentiate muscle weakness w/ certain myasthenic symptoms (eg, diplopia, ptosis & generalized weakness). History of atopy or severe anaphylactic reactions to a variety of allergens. Consider gradual w/drawal prior to general anesth. Surgical anaesth. May block systemic β-agonist effects eg, adrenaline. May cause irritation & discolour soft contact lenses. Avoid contact w/ soft contact lenses. May impair ability to drive or use machines. Pregnancy & lactation.