Not a curative treatment for angina attacks nor initial treatment for unstable angina pectoris. Not a treatment for MI. Angina attack. Can cause or worsen symptoms eg, trembling, rigid posture, slow movements & shuffling, unbalanced walk, especially in elderly. Falls may occur following drop in BP or loss of balance. May affect ability to drive or use machinery. Moderate renal impairment. Preferably not to be taken during pregnancy. Not recommended during lactation. Not recommended in childn <18 yr. Elderly >75 yr.