Avana 50 is a medication that contains the active ingredient Avanafil. It is primarily used to treat erectile dysfunction (ED) in men. Avanafil is a phosphodiesterase type 5 (PDE5) inhibitor, similar to Sildenafil (the active ingredient in Viagra), Tadalafil (the active ingredient in Cialis), and Vardenafil (the active ingredient in Levitra). Avana 50 works by increasing blood flow to the penis when a man is sexually aroused, helping him achieve and maintain erections suitable for sexual activity.