Key facts
- Temporary blurred vision is a common side effect of sildenafil.
- Sudden loss of vision or hearing needs urgent medical help.
- Tell your prescriber if you've had an eye condition affecting the optic nerve.
Temporary changes
Sildenafil can cause temporary changes in vision, such as blurred vision. These usually pass. Avoid driving if your vision is affected.
Sudden changes need urgent help
Get urgent medical help if you have a sudden loss of vision in one or both eyes, or sudden problems with your hearing.
Before you start
Tell your prescriber if you've ever had vision loss caused by reduced blood flow to the optic nerve, as this affects whether sildenafil is suitable.