bisacodyl /bisak″ōdil/ , a cathartic. ▪ INDICATIONS: It is prescribed in the treatment of acute or chronic constipation or for emptying of the bowel before or after surgery or before diagnostic radiographic procedures. ▪ CONTRAINDICATIONS: Abdominal pain, nausea, vomiting, rectal fissures, ulcerated hemorrhoids, or known hypersensitivity to this drug prohibits its use. ▪ ADVERSE EFFECTS: Among the more serious adverse reactions are colic, abdominal pain, and diarrhea.