Avana, also known by its generic name avanafil, is a medication used to treat erectile dysfunction (ED) in men. It belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors, which also includes medications like Viagra (sildenafil), Cialis (tadalafil), and Levitra (vardenafil).

Avana works by increasing blood flow to the penis when a man is sexually aroused, thereby helping him achieve and maintain an erection sufficient for sexual activity. It does this by inhibiting the enzyme phosphodiesterase type 5, which regulates blood flow in the penis. By blocking this enzyme, Avana allows the blood vessels in the penis to relax and widen, promoting increased blood flow and erection.

Avana is known for its rapid onset of action, with some men experiencing effects within 15 minutes of taking the medication. It can be taken as needed, typically about 30 minutes before sexual activity. The duration of Avana's effects can last for up to 4-6 hours.

It's important to note that Avana, like other PDE5 inhibitors, does not cure ED but rather helps manage the symptoms. It's also essential to use Avana as prescribed by a healthcare provider and to follow their instructions regarding dosage and timing. Additionally, Avana is not intended for use by women or children and should only be used by men who have been diagnosed with erectile dysfunction.