Avaforce 100 mg is a prescription medication used to treat erectile dysfunction (ED) in men. Its active ingredient, Vardenafil, belongs to the class of phosphodiesterase type 5 (PDE5) inhibitors. Vardenafil helps relax the blood vessels in the penis, increasing blood flow during sexual stimulation and enabling men to achieve and maintain a firm erection. Common side effects include headache, flushing, dizziness, nasal congestion, and indigestion, which are usually mild and temporary. Serious side effects, although rare, can include chest pain, sudden vision or hearing changes, or prolonged erections (priapism), and require immediate medical attention.