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VIAGRA is not an aphrodisiac or a hormone. It’s a medicine that treats the physical problem of erectile dysfunction (ED), also known as impotence. Over half of all men over 40 have ED to some degree and many men don’t realize they have it. Viagra enables men with erectile dysfunction to respond to sexualstimulation. When a man is sexually excited, Viagra helps the penis fill with enough blood to cause longer lasting erection. Viagra starts working within 30 minutes of taking the pill. This applies equally to those who suffer from erectile dysfunction infrequently. Viagra is not for women and should only be taken by men.

Viagra is the original pill that treats male erectile dysfunction. Viagra's use is to help men who suffer from erectile dysfunction achieve and maintain an erection when aroused. The pill is to be taken only when you wish to have sex. Viagra increases blood flow to the penis. After sexualstimulation the arteries in the penis relax and enlarge. As these arteries expand the veins taking blood away from the penis are compressed restricting the blood flow out of the penis, thus causing longer lasting erection. It is if the nerves and blood vessels that facilitate this process are not working sufficiently that erectile dysfunction occurs.

Talk with your doctor first. Make sure you are healthy enough to have sex. Viagra should be taken once a day, with or without meals, as required. The dosage may have to be adjusted by your physician should the desired effect not be achieved. Do not reduce or increase the prescribed dosage. It is normal to start at the lowest dose to check for effectiveness.

Patients should always check the condition of their heart with a physician before taking Viagra. Sexual activity can be demanding on the heart. In some cases doctors do not recommend sex, with or without medication.

Side effects such as headaches, facial flushing and an upset stomach can occur, though these are most likely with higher doses of Viagra. Usually mild, these side effects do not last longer than a few hours. There is also the possibility of bluish or blurred vision or sensitivity to light. Should an erection last longer than four hours get medical assistance.

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