Adcirca (Tadalafil)

* Decreased eyesight or loss of vision in one or both eyes (NAION). If you notice a sudden decrease or loss of vision in one or both eyes, contact a healthcare provider right away. It is not possible to determine whether these events are related to oral medicines for the treatment of erectile dysfunction, including tadalafil, or to other medical problems, or to a combination of these.

* Sudden decrease or loss of hearing, sometimes with ringing in the ears and dizziness. If you notice a sudden decrease or loss of hearing, contact a healthcare provider right away. It is not possible to determine whether these events are related to oral medicines for the treatment of erectile dysfunction, including tadalafil, or to other medical problems, or to a combination of these.

* In men, an erection that lasts more than 4 hours (with or without pain). Talk to your healthcare provider or go to the emergency department right away. An erection that lasts more than 4 hours must be treated as soon as possible or you can have lasting damage to your penis, including the inability to have erections.