SIDE EFFECTS: Stomach upset, heartburn, constipation, belching, gas, nausea, loss of appetite, aggravated hemorrhoids, change of taste, headache, or itching may occur. If these effects persist or become bothersome, inform your doctor. Notify your doctor if you experience: unusual bleeding or bruising, severe stomach ache, vomiting. If you notice other effects not listed above, contact your doctor or pharmacist.

PRECAUTIONS: Tell your doctor your medical history, especially: constipation, hemorrhoids, diabetes, phenylketonuria (PKU), low thyroid hormone levels (hypothyroidism), stomach/intestinal disease, gall bladder disease, kidney disease, liver disease, unusual bleeding or bruising, any allergies. This drug should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor. It is not known if this drug is excreted into breast milk. Consult your doctor before breast-feeding.

DRUG INTERACTIONS: Tell your doctor of all prescription and nonprescription drugs you may use, especially of: digitoxin, digoxin, diuretics ("water pills"), penicillin G, phenobarbital, phenylbutazone, propranolol, tetracycline, thyroid, warfarin or other "blood thinners", vitamin A/D/E, antidepressants, hydrocortisone, estrogens and progestins (e.g., birth control pills), troglitazone. Do not start or stop any medicine without doctor or pharmacist approval.

OVERDOSE: If overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US national poison hotline at 1-800-222-1222. Canadian residents should call their local poison control center directly. Symptoms of overdose may include severe constipation.

Report Problems to the Food and Drug Administration You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088. Need help identifying pills and medications? Use the pill identifier tool on RxList.