Viagra (generic name sildenafil) is a medication used to treat erectile dysfunction (impotence). According to the Physician's Desktop Reference, it dilates the blood vessels in your penis and more blood flow results in an erection. The typical dose is 50mg that can be taken 30 minutes to four hours before sexual activity. Taking more Viagra than your doctor prescribes can result in an overdose.
Chest Pain
According to Drugs.com, a Viagra overdose can lead to chest pain. Too much Viagra can affect the vessels in your body and cause them to dilate. This can lead to very low blood pressure (hypotension) and prevent your blood from reaching your heart. This can result in chest pain. This chest pain may be sharp, dull or heavy in feeling. It may last for 10 minutes or may last for five or more hours. Call your doctor when you experience chest pain.
Arrythmias
The National Library of Medicine also says Viagra can lead to an irregular heart rhythm medically known as an arrhythmia. Normally, your heartbeats follow a consistent rate and rhythm. When this is disrupted, your heart may malfunction and fail to provide appropriate blood flow to your body. Sometimes, an arrythymia may be manifested as fainting spells, dizziness or lightheadedness. Call your doctor; she will treat you and check your heart rhythm with an electrocardiogram (EKG).
Priapism
Taking too much Viagra can also result in a prolonged and painful erection that may last approximately four or more hours. This is called priapism. Go to your local hospital in order to have priapism promptly treated. This is a medical emergency that can result in loss of sexual function if left untreated.
