Oral medications for ED have become very well known, and their convenience often makes them the first line of treatment. While effective for many men, those who take nitrates for chest pain should not use oral medications, given the potential for an unsafe drop in blood pressure. Other potential side effects include but are not limited to, blurred vision, loss of hearing, and headaches.
Potential side effects:
- Headache
- Facial flushing
- Stomach pain
- Nasal congestion
- Nausea
- Dizziness
- Rash
- Urinary tract infections (UTIs)
- Diarrhea
- Inability to differentiate between the colors green and blue
In rare cases, Viagra can cause an erection that lasts longer than 4 hours (priapism), which can result in permanent damage if left untreated.