|
Precautions Smoking cigarettes while using this medicine may increase your risk of stroke, heart attack, blood clots, high blood pressure, or other diseases of the heart and blood vessels. If you have vomiting or diarrhea for any reason, your medicine may not work as well. Taking certain antibiotics or anticonvulsants while you are using this medicine may decrease the effectiveness of this medicine. To prevent pregnancy, use an additional form of birth control until your next period. If you have any questions, contact your doctor, nurse, or pharmacist. Before you have any medical or dental treatments, emergency care, or surgery, tell the doctor or dentist that you are using this medicine. If you wear contact lenses and you develop problems with them, contact your doctor. Before you begin taking any new medicine, either prescription or over-the-counter, check with your doctor or pharmacist. This medicine may cause dark skin patches on your face. Exposure to the sun may make these patches darker. If patches develop, use a sunscreen or protective clothing when exposed to the sun, sunlamps, or tanning booths. Use of this medicine will not prevent the spread of sexually transmitted diseases (STDs). Do not use this medicine if you are pregnant. If you suspect that you could be pregannt, contact your doctor immediately. This medicine is excreted in breast milk. If you are or will be breast-feeding while you are using this medicine, check with your doctor or pharmacist to discuss the risks to your baby.
Drug Interactions Tell your doctor of all nonprescription and prescription medication you may use, especially any nitrate medications (e.g., nitroglycerin, isosorbide dinitrate), nitroprusside (any "nitric oxide donor" medicines), cimetidine, erythromycin, azole antifungals (e.g., itraconazole, ketoconazole), mibefradil, rifamycins (e.g., rifampin) or high blood pressure medicines.
|