What Are Some Side Effects of Bisacodyl?

Possible side effects associated with bisacodyl include cramping in the stomach or abdomen, weakness, diarrhea and nausea, according to WebMD. Individuals should seek immediate medical attention if side effects occur.

Rare side effects associated with taking bisacodyl include irregular heartbeat, fainting, muscle cramps and dizziness, notes WebMD. Other serious side effects include decreased urination and changes in mood or mental state, such as confusion.

Although it does not happen often, some people may be allergic to bisacodyl, states WebMD. Signs of an allergic reaction include a rash, severe dizziness and difficulty breathing. Itching or swelling in the face, throat and tongue areas are also signs of an allergic reaction to bisacodyl. Many people who take bisacodyl do not have side effects.

Before taking bisacodyl, it is important to inform the physician of any existing medical conditions, especially appendicitis or symptoms associated with appendicitis, rectal bleeding, a change in bowel habits lasting for two weeks or longer, or intestinal blockage, states WebMD. Pregnant or nursing women should not take bisacodyl without speaking to a medical professional first.

Bisacodyl is an oral stimulant-laxative that treats constipation and cleans out the intestines prior to a bowel examination or surgery, advises WebMD. It stimulants movement of the intestines to expel stool.