MEDICAL INFORMATION

• cimetidine;
• bosentan;
• imatinib;
• nefazodone;
• St. John's wort;
• an antibiotic--clarithromycin, erythromycin, telithromycin;
• antifungal medication--fluconazole, itraconazole, ketoconazole, miconazole, posaconazole, voriconazole;
• heart or blood pressure medication--amlodipine, amiodarone, nicardipine, quinidine;
• hepatitis C medications--boceprevir, telaprevir;
• HIV/AIDS medication--atazanavir, delavirdine, efavirenz, fosamprenavir, indinavir, nelfinavir, nevirapine, ritonavir, saquinavir;
• seizure medication--carbamazepine, fosphenytoin, oxcarbazepine, phenobarbital, phenytoin, primidone; or
• tuberculosis medication--isoniazid, rifabutin, rifampin, rifapentine.

• heart disease or heart rhythm problems,
  coronary artery disease;
• a recent heart attack (within the past 90 days);
• a recent history (in the past 6 months) of a stroke,
  or congestive heart failure;
• angina (chest pain), high or low blood pressure;
• liver or kidney disease (or if you are on dialysis);
• a blood cell disorder such as sickle cell anemia, multiple myeloma, or leukemia;
• a bleeding disorder such as hemophilia;
• a stomach ulcer;
• retinitis pigmentosa (an inherited condition of the eye);
• a physical deformity of the penis (such as Peyronie's disease); or
• if you have been told you should not have sexual intercourse for health reasons.