Viagra (generic name sildenafil) is a popular medication used for treating erectile dysfunction. The medication acts by relaxing muscles and increasing the flow of blood around the groin area, thus allowing impotent men to achieve and maintain an erection. People who have experienced chest pains or have heart problems are advised to avoid taking Viagra. Some recreational drugs and certain medications can also have negative interactions with Viagra in the body. Consult your doctor for more information.

Side Effects

It is recommended that a patient contact the local emergency room if they develop hives, have difficulty breathing, or have swollen areas of the body due to Viagra use. These may be signs of an allergic reaction to the medication. Other known side effects include sudden vision or hearing loss, chest pains, nausea, general feeling of illness, swelling in the hands or feet, and shortness of breath.

Warnings

Viagra is usually taken only as-needed, which is usually 30 minutes to one hour before engaging in sexual activity. It may be taken up to four hours prior to sexual activity. Do not take more than one dose per 24-hour period to avoid side effects. Contact the local emergency room in the event of a suspected overdose.