Viagra Erectile Dysfunction
Erectile dysfunction is a man’s inability to achieve or maintain an erection either while sexually aroused or during sexual intercourse. It is an ailment that affects millions of men worldwide every year. Men in their sixties and over are more likely to be affected, with erectile dysfunction occurring four times as frequently in men over sixty than to men in their forties. However erectile dysfunction can and does affect men of all ages.
Viagra is a drug designed to alleviate erectile dysfunction. After taking Viagra erectile dysfunction no longer occurs and men are able to achieve lasting erections. Erectile dysfunction is caused by an insufficient blood flow to the penis during sexual arousal. The most common causes for this lack of blood flow are physical ailments such as hypertension, high cholesterol or diabetes. Other factors can be psychological such as stress and depression, or the side effects of drugs, either medicinal or recreational; both alcohol and nicotine cause erectile dysfunction. Viagra price is commonly believed by men to be worth the benefit that it adds to their sex lives.
When a man is sexually aroused or stimulated an intricate chain of chemical reactions take place in the body which results in the dilation of the arteries and blood vessels of the penis. This dilation is what produces the increased blood flow in the penis, causing the corpa cavernosa, the muscular tissue of the penis which runs the length of the shaft, to become engorged.
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Erectile dysfunction occurs when the blood vessels of the penis do not dilate, this is due to the presence of the enzyme, phosphodiesterase type 5, more commonly known as PDE5. PDE5 is a vasoconstrictor, which acts on the cells of the blood vessels keeping them contracted rather than dilated. Viagra is a PDE5 inhibitor, which deactivates the enzyme, enabling the blood vessels to dilate, thus increasing blood flow causing an erection. Those who want to buy Viagra online will find that Viagra prices vary slightly on different sites.
Viagra is a pill taken orally around half an hour before intended intercourse to give the drug time to take effect. Some men opt to try a sildenafil sample to see if the effects are favorable. Those taking Viagra should be sexually aroused or stimulated as the drug only acts on the chemicals present during arousal. Half an hour after taking Viagra erectile dysfunction sufferers will be able to achieve and maintain an erection, anywhere up to four hours, enabling them to successfully engage in intercourse and sexual activity. Before the discovery of Viagra erectile dysfunction was an embarrassing and difficult problem for men to deal with; now however it is an easily treatable and manageable ailment.