Simple constipation, whether self-induced or environmental eg, neglect of the call to stool or poor sanitary conditions. Constipation in old age, especially where maintenance treatment is required. Constipation in pregnancy and the puerperium. Idiopathic slow-transit constipation. Constipation in the irritable bowel syndrome. Conservative treatment of haemorrhoids. Avoidance of straining after surgery and in cerebral and cardiovascular disease.