(for veterinary information only)
BRAND NAME: PROPULSID
Available only via
Metoclopramide also had the disadvantage of causing neurologic side effects in the occasional patient by virtue of its ability to act on the brain. Cisapride is not able to cross the blood-brain barrier and thus cannot cause such side effects. The downside of this, however, is that cisapride cannot directly relieve the sensation of nausea.
Cisapride was withdrawn from the human market because when it was combined with any of several commonly prescribed drugs, heart rhythm disturbances ensued. (Often people see different specialist doctors for different body problems and it is not unusual for one doctor to be unaware of the medications that another doctor has prescribed.) Risks outweighed the benefits and now cisapride must be obtained from a compounding pharmacy for veterinary use. The medications that caused problematic interactions are not as common in veterinary practice; also, most veterinary patients see only one veterinary practice so the interaction issue is much easier to control for pets.
HOW THIS MEDICATION IS USED
Cisapride is given up to three times daily. It is used to treat nausea due to motility problems in the stomach, though it does not treat the nausea sensation directly in the brain as does its cousin, metoclopramide. It is particularly helpful in patients who have adverse neurologic reactions to metoclopramide but still require stomach motility treatment.
If too great a motility effect is created, diarrhea and cramping may result.
INTERACTIONS WITH OTHER DRUGS
The drug interaction that led to the removal of cisapride from the human market was the induction of ventricular (heart) arrhythmias when cisapride was used with the antifungal agents ketoconazole or itraconazole or with silymarin, the active ingredient in milk thistle supplements (commonly used to support liver function). Additional medications that could lead to arrhythmias with cisapride include: chloramphenicol (an antibiotic), amiodarone (a heart medication), clarithromycin (an antibiotic), cimetidine (the antacid mentioned above), procainamide (a heart medicine), sotalol (a heart medicine), and of the macrolide class of antibiotics (with the exception of azithromycin), and tricyclic antidepressants such as amitriptylline. The arrhythmias reported in humans have not been reported in animals are are still only theoretical.
CONCERNS AND CAUTIONS
Page last updated: 12/5/2017