Bisacodyl is a stimulant laxative used to treat constipation and prepare the bowel for medical procedures.

Applications:

• Relieves occasional constipation.

• Used for bowel cleansing before colonoscopy or surgery.

Side Effects:

• Common: abdominal cramps, diarrhea, nausea.

• Serious (rare): electrolyte imbalance, dehydration with prolonged use.

Domperidone is a dopamine antagonist used to treat nausea, vomiting, and gastrointestinal motility disorders.

Applications:

• Relieves nausea and vomiting.

• Treats gastroparesis by enhancing stomach emptying.

• Sometimes used to increase breast milk production (off-label).

Side Effects:

• Common: dry mouth, abdominal cramps, and headache.

• Serious (rare): heart rhythm disorders, especially in elderly or high doses.