Avana 100 mg is a medication containing avanafil, which is used to treat erectile dysfunction (ED) in men. Avanafil belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors, which work by increasing blood flow to the during stimulation, thereby helping men to achieve and maintain an erection. Avanafil can interact with certain medications, particularly nitrates (often used to treat chest pain) and alpha-blockers (used to treat high blood pressure). Combining avanafil with these medications can cause a sudden drop in blood pressure, which can be dangerous. It's important to consult with a healthcare provider before taking avanafil, especially if you have a history of heart problems. Avanafil can cause a sudden decrease or loss of vision or hearing, which may be accompanied by ringing in the ears and dizziness. These could be signs of a serious complication and require immediate medical attention.