How CIALIS may treat erectile dysfunction (ED)

CIALIS may improve the ability to get erections and maintain them until sexual intercourse is successfully completed. It may also improve the overall satisfaction with the hardness of erections.

CIALIS belongs to a group of medicines called phosphodiesterase 5 (PDE5) inhibitors. PDE5 is an enzyme found in many tissues in the body; it helps prevent blood vessels from relaxing and filling up with blood.

Blood flow to the penis is necessary to get and keep an erection. CIALIS blocks PDE5 and causes smooth muscle and blood vessels in the penis to relax. This relaxation leads to increased blood flow. And increased blood flow to the penis is necessary for getting and maintaining an erection.

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