Vardenafil may cause side effects. Tell your provider if any of these symptoms are severe or do not go away:
- headache
- upset stomach
- heartburn
- flushing
- stuffy or runny nose
- flu-like symptoms
Some side effects can be serious. If you experience any of the following symptoms, call your provider immediately:
- erection that lasts longer than 4 hours
- sudden severe loss of vision (see below for more information)
- blurred vision
- changes in color vision (seeing blue tinge on objects, difficulty telling the difference between blue and green, or difficulty seeing at night)
- dizziness
- sudden decrease or loss of hearing
- ringing in ears
- swelling of the face, throat, tongue, lips, eyes, hands, feet, ankles, or lower legs
- hoarseness
- difficulty breathing or swallowing
- fainting
- hives
- rash
Vardenafil may cause other side effects. Call your provider if you have any unusual problems while taking this medication.
If you experience a sudden loss of vision or hearing (sometimes with ringing in the ears or dizziness), while you are taking vardenafil, call your provider immediately. Do not take any more doses of vardenafil or similar medications such as sildenafil (Viagra) or tadalafil (Cialis) until you talk to your provider.