Indications for Generic Viagra

Viagra or sildenafil belongs to a group of drugs which are known as phosphodiesterase inhibitors. It is actually the first medication which has been released in the market to treat impotence or erectile dysfunction. Viagra works by relaxing the muscles and dilating the blood vessels in the penis, which in turn, increases the flow of blood during sexual activity, helping you to achieve and maintain an erection. Viagra can also be used for other purposes or medical conditions as determined by your physician.

It is important to understand that Viagra or sildenafil would only be effective during sexual arousal. You should not take Viagra if you have an allergy to sildenafil or to similar medications. Make sure that you would be informing your doctor of any drug allergies that you have. You should also not take Viagra if you are already taking nitrate-based drugs including nitroglycerin ointment, nitroglycerin patches, nitroglycerin pills and isosorbide pills. Taking Viagra with any of these drugs could cause your blood pressure to become dangerously low.

You should only take Viagra or sildenafil as your doctor has prescribed it for you. Viagra is usually most effective if you take it an hour before you engage in a sexual activity; however, you could take it anywhere from half an hour to four hours prior to engaging in sexual activities. Because Viagra is only taken when needed, you are not likely to miss a dose.

If you are taking Cardura or any other alpha-blocking drug, make sure that you would not be taking Viagra within four hours of taking Cardura or that other alpha-blocking drug to prevent your blood pressure from dropping dangerously low.

The use of Viagra or sildenafil has been associated with some side effects including abnormal vision, acid indigestion, diarrhea, headache, urinary tract infections, flushing and nasal congestion; however, these are only temporary and should go away on their own. If they do not or if you start experiencing more serious side effects such as stroke, heart attack, heart irregularities or a dangerous drop in your blood pressure, stop taking the medication and call your doctor right away.

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