Permit your medical professional know if you are preparing on taking 'beta' blockers, HIV protease inhibitors, amlodipine, barbiturates, seizure medicines, rifabutin, nevirapine, bosentan, alpha blockers, cimetidine, medications for high blood stress, various other impotence meds, particular antifungals, rifampin, efavirenz, anticoagulants, or erythromycin, as you could be advised to avoid taking either of the medicines, or a reduced dose might be needed.

Never begin other medications without your healthcare provider's permission, specifically diclofenac, prescription antibiotics, heart or blood tension medicines, antifungals, rifampin, isoniazid, antidepressants, cimetidine, conivaptan, enoxacin, HIV/AIDS medicines, imatinib, or bosentan.