Avana 200 mg is a higher-dose version of Avanafil, a medication used to treat erectile dysfunction (ED) in men. It is a PDE5 inhibitor, which works by increasing blood flow to the penis, allowing men to achieve and maintain an erection during sexual activity. Avanafil works by inhibiting the enzyme PDE5 in the penis. This results in increased levels of cGMP, a molecule that helps dilate the blood vessels, allowing for improved blood flow to the penis.