Patient w/ salt or volume depletion, severe obstructive coronary artery disease, renal artery and mitral and severe aortic stenosis, ischemic heart disease or cerebrovascular disease, hypertrophic cardiomyopathy w/ outflow tract obstruction, cardiac failure, collagen vascular disease. Hepatic and renal impairment. Elderly. Patient undergoing major surgery or during anaesthesia; desensitisation treatment (e.g. hymenoptera venom).
Lactation: Unknown if distributed in human breast milk; because of the potential for adverse effects on the nursing infant, decide whether to discontinue nursing or discontinue the drug