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Available by prescription only, avanafil is an erectile dysfunction drug taken approximately 30 minutes before sexual activity. The medication works by allowing blood flow to the penis to help a man get and maintain an erection. Possible side effects may include a sore throat, back pain, and headaches.

What Is Avanafil?

Avanafil (Stendra™) is a prescription medication approved to treat erectile dysfunction (ED). Men with erectile dysfunction have a repeated inability to get or maintain an erection. Avanafil belongs to a class of medicines known as phosphodiesterase type-5 (PDE5) inhibitors. It is said to have a faster onset of action than other PDE5 inhibitor medications, which means it only needs to be taken 30 minutes before sexual activity.
 
(Click What Is Avanafil Used For? for more information on this topic, including possible off-label uses.)
 

Are There Side Effects?

Just like any medicine, avanafil can cause side effects. However, not everyone who takes the medicine will have problems. In fact, most people tolerate it quite well.
 
If side effects do occur, in most cases, they are minor and either require no treatment or are treated easily by you or your healthcare provider. Serious side effects are less common.
 
Some of the most common avanafil side effects include but are not limited to:
 
 
(Click Avanafil Side Effects to learn more, including potentially serious side effects you should report immediately to your healthcare provider.)
 
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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