Not to be used when stimulation of muscular contractions might adversely affect GI conditions as in GI haemorrhage, obstruction, perforation, or immediately after surgery. Hypertensive crises in patients w/ phaeochromocytoma. Review patients on prolonged therapy regularly. Patients w/ renal impairment, epilepsy, Parkinson's disease, or history of depression. May cause drowsiness or impaired reactions; patients affected should not drive or operate machinery. Childn, young patients, & elderly; patients <20 yr.