Allow your medical professional know if you are thinking of taking beta blockers, HIV protease preventions, amlodipine, barbiturates, seizure medications, rifabutin, nevirapine, bosentan, alpha blockers, cimetidine, medicines for hypertension, other impotence meds, different antifungals, rifampin, efavirenz, anticoagulants, or erythromycin, as you may be encouraged to do without taking either of the medicines, or a reduced dosage could be required.
