Erectile dysfunction is defined as a man’s inability to achieve or maintain an erection while sexually aroused or throughout the duration of intercourse. Erectile dysfunction, also known as impotence, can be caused by a variety of factors, the majority of which are pre-existing health problems such as high blood pressure (hypertension), high cholesterol levels or diabetes. Psychological issues such depression, stress or anxiety can also result in erectile dysfunction. Some drugs, both medicinal and recreational, can have erectile dysfunction as a side effect; the most notable are nicotine and alcohol.
Sildenafil is a drug designed to help those who suffer from erectile dysfunction by enabling them to achieve a lasting and strong erection. Sildenafil is most commonly sold as the well known treatment Viagra. It is similar in nature to other forms of erectile dysfunction treatment such as tadalafil and vardenafil, all of which are PDE5 inhibitors. Sildenafil tablets in varying dosages are now available for purchase without prescription either from a pharmacy or online making it easier than ever to buy Viagra prescription medication. A simple Google search for “buy Viagra pill” yields thousands of results so it’s important to make sure you are dealing with a legit online pharmacy.
Treating ED with Online, Prescription-Free Sildenafil
When a man becomes sexually aroused a series of molecular reactions occurs which result in the dilation of the blood vessels and arteries of the penis. This dilation of the blood vessels increases the blood flow to the fleshy tissues of the penis, called the corpa cavernosa, which run the length of the shaft. The corpa cavernosa then become engorged and the penis stiffens into an erection.
Erectile dysfunction occurs when the penile blood vessels do not dilate enough to increase the blood flow. This is due to the body’s natural enzyme PDE5, or phosphodiesterase type 5, which is a vasoconstrictor. PDE5 acts on the cells lining the blood vessels causing them to contract. Sildenafil as a PDE5 inhibitor renders the enzyme inactive and therefore allows the blood vessels to dilate. The dilated blood vessels increase the blood flow resulting in an erection.
Sildenafil without prescription tablets should be taken at least half an hour prior to intended intercourse, this time allows the sildenafil to be absorbed into the blood. The man should also be sexually aroused or stimulated when taking sildenafil as the PDE5 enzyme which the drug acts on will only be present while the man is sexually aroused. If the man is not sexually aroused the drug may not work effectively. The resulting erection should last anywhere from two to four hours enabling the man to engage in sexual activity without the worry of erectile dysfunction.