HOW SAFE IS VIAGRA

Viagra should not be used without the approval of a doctor. It has been tested and approved for use by adult men only. It should not be used by patients whose medical condition makes it unhealthy for them to have sex (such as patients with certain heart conditions). It should not be used by patients taking nitrates (commonly found in nitroglycerin and other chest pain medicine, as well as in "poppers"), since the combination of the drugs may lower the patients' blood pressure to dangerous and potentially fatal levels.

Some side effects associated with Viagra are headaches, facial flushing, an upset stomach, and blurred or blue-tinged vision. These are usually mild and do not prevent the patient from continued use of Viagra. Some of the side effects are more common and/or stronger in patients taking higher doses of Viagra.