Rectal problems are often caused by constipation or diarrhea. Many
prescription and nonprescription medicines can cause these conditions.
Medicines that can cause either constipation or diarrhea
include:
- Antibiotics, such as ampicillin, amoxicillin,
clindamycin, tetracycline, and cephalosporins.
- Antacids that
contain aluminum or magnesium.
- Antidepressants and
tranquilizers.
- Blood pressure medicines, especially clonidine or
calcium channel blockers, such as verapamil.
- Calcium
supplements.
- Medicines used to treat cancer
(chemotherapy).
- Cold medicines
(antihistamines).
- Diuretics, such as Lasix and hydrochlorothiazide.
- Iron supplements or multivitamins that contain
iron.
- Laxatives, such as Correctol, Dulcolax, Ex-Lax, or
Feen-a-Mint.
- Lipid-lowering agents, such as cholestyramine.
- Medicines for Parkinson's disease.
- Pain medicines,
especially narcotics.
If you think that your rectal problem may be caused by a
medicine:
- Call the health professional who prescribed the
medicine to determine whether you should stop taking the medicine or take a
different one. An appointment may not be necessary.
- If you are
taking a nonprescription medicine, stop taking the medicine. Call your health
professional if you feel you need to continue taking the medicine.
