A bowel movement usually occurs between 6 and 12 hours after Senokot is taken, explains Drugs.com. The medication is a stimulant laxative that produces bowel movements by irritating the bowel tissues, which promotes intestinal contractions that move the food through the gastrointestinal tract.
Aside from producing a bowel movement, Senokot can temporarily turn urine brown, notes MedlinePlus. It can also cause stomach upset with cramps, nausea and faintness. Rectal bleeding is a serious side effect associated with Senokot. Should this occur, contact a doctor immediately.
Senokot should not be used for longer than a week without seeking the advice of a doctor, reminds Drugs.com. Using any stimulant laxative for an extended period of time can cause the bowel to become dependent on the medication.