Cialis.

Cialis (tadalafil) is a prescription anti-impotence medicine specially designed for the treatment of erectile dysfunction also commonly known as impotence. Cialis can be taken if you are unable to get an erection hard enough to have sex. By taking Cialis and being sexually stimulated you are able to get an erection fast and be sure it will last for as long as you need to complete sexual intercourse. Cialis offers the longest efficiency – up to 36 hours, but it can still interact with other medications you are using. The following ones will need to be reported to make sure you are benefitting for your treatment: alpha blockers, efavirenz, amiodarone, medications for high blood pressure, carbamazepine, rifampin, delavirdine, zafirlukast, HIV protease inhibitors, isoniazid, nefazodone, danazol, rifabutin, cimetidine, clarithromycin, other erectile dysfunction treatments, metronidazole, phenobarbital, erythromycin, ethosuximide, diltiazem, lovastatin, antifungals, and sertraline. Cialis must never be combined with nitrate-based drugs, as very dangerous interactions are possible in people using this drug and combining it with nitrates.