Seek immediate medical attention if you experience a prolonged erection (lasting more than 4 hours) or sudden vision loss.
Common side effects include headache, facial flushing, nasal congestion, and indigestion. These are usually mild and temporary. However, report any persistent or worsening symptoms to your doctor.
- Headache: Can be relieved with over-the-counter pain relievers. If severe or persistent, contact your physician. Facial Flushing: A common reaction; usually resolves on its own. Nasal Congestion: May be managed with saline nasal spray or other decongestants. Avoid overuse. Indigestion: Take with food to minimize this effect. Avoid fatty or heavy meals.
Certain medications can interact with Viagra. Consult your doctor or pharmacist before taking Viagra if you are using any of the following:
Nitrates (used for chest pain): This combination can cause a dangerous drop in blood pressure. Alpha-blockers (used for high blood pressure or prostate problems): Concurrent use can significantly lower blood pressure. Certain antifungals: Potential for increased Viagra levels in the blood. HIV protease inhibitors: May increase Viagra levels.
Grapefruit juice can also interact with Viagra, potentially increasing its effects. Avoid grapefruit juice while taking Viagra.
This information is not exhaustive. Always consult your doctor or pharmacist for personalized advice before starting any new medication, including Viagra, and report any unexpected side effects.


