Generic Viagra vs Sildenafil
cenforce reviews  work by increasing the level of blood flow to the penis, making it easier to erect.Sildenafil, which is the active ingredient in both drugs, belongs to a class of drugs called phosphodiesterase-5 inhibitors or  inhibitors.As a PDE5 inhibitor, sildenafil works by relaxing muscle tissue within the blood vessel walls, improving blood flow to many parts of the body.

Contrary to popular belief, drugs like Viagra and generic sildenafil won't make you hard on their own.Instead, these drugs work by making it easier to get an erection if s*xual stimulation occurs.Sildenafil has been available since  cenforce cure Erectile Dysfunction when it was approved by the under the product name Viagra as an erectile dysfunction drug.

Interestingly, sildenafil was originally discovered while Pfizer chemists were looking for a treatment for hypertension.Due to its vasodilating effects, sildenafil initially appeared to be a promising treatment for angina, a form of chest pain, but the results were not strong enough to warrant further study.

In some cases, sildenafil is still used to treat pulmonary arterial hypertension  a form of hypertension  Sildenafil citrate   that can affect the arteries of the lungs.Pfizer patented sildenafil in 1996. Two years later, in March, the new drug, now called Viagra, received  approval and went on sale as a prescription drug for the treatment of erectile dysfunction.

As the first oral erectile dysfunction drug, Viagra has become incredibly popular. Its blue color and diamond shape earned it the  fildena using for longer on bed  nickname "blue pill" and large-scale television advertising campaigns made it a drug that almost everyone knew.Pfizer's patent on V*agra expired in

 for countries outside the United States, allowing other brands to manufacture and market their own generic Viagra drugs containing sildenafil.

fildena cure Erectile Dysfunction  Pfizer challenged the expired patent in the United States, sildenafil has since become widely available as a generic drug and can be manufactured and marketed by a variety of different companies.