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Viagra is an effective and popular treatment for erectile dysfunction, a man’s inability to achieve or maintain an erection either while aroused or during sexual intercourse. When men purchase Viagra without prescription, it enables them to get strong, healthy erections that last the duration of sexual intercourse. Viagra has been prescribed by healthcare professionals for many years and it is now possible to order Viagra without prescription from online websites.
Erectile dysfunction is an embarrassing and distressing condition that can affect men of all ages. Older men are far more prone to experience the problem, but it is though on average one in ten men will be affected at some point during their life. It is most commonly caused by health problems such as high blood pressure (hypertension) or high cholesterol, diabetes is also a known cause. Depression and stress as well as other psychosomatic issues can also result in erectile dysfunction. It can often be very embarrassing for men suffering from erectile dysfunction to discuss the problem and that is why many choose to order Viagra without prescription.
Usually when a man is sexually aroused a series of chemical reactions result in the dilation of the blood vessels and arteries leading to the penis. This increases the blood flow to the corpa cavernosa, the fleshy tissues that span the length of the penis shaft. The corpa cavernosa then become engorged with blood, stiffening and swelling the penis into an erection.
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A man suffering from erectile dysfunction lacks the sufficient blood flow to penis necessary to achieve or keep an erection. This is because of the constriction of the penile blood vessels by the naturally occurring enzyme phosphodiesterase type 5. PDE5, as the enzyme is better known, is a vasoconstrictor that causes the cells lining blood vessels to contract.
Viagra’s key active ingredient is sildenafil citrate which is a PDE5 inhibitor. This restricts the enzyme and prevents it from acting on the cells of the blood vessels. The blood vessels then dilate and provide sufficient blood to the penis to produce an erection. Viagra meds are taken around thirty minutes prior to intercourse and the man must be sexually aroused otherwise the drug may not be effective.
The ability to order Viagra without prescription has meant that many more men are able to treat erectile dysfunction, without embarrassment. Viagra makes erectile dysfunction a highly treatable condition and enables men to maintain a healthy sex lives. When men purchase Viagra no prescription necessary online, they can have their medication delivered overnight.