The frightening disease of impotence is consistently increasing its victims among men. Unfortunately impotence has so high incidence rate now that every man gets affected by it sometime in his life. The crippling disease of impotence affects one’s intimate relations adversely demolishing the pleasures of sexual intercourse. To help such men experience again the lost pleasures of sexual intercourse, Pfizer pharmaceuticals, a popular pharmaceutical company, has introduced a wonder drug called Viagra. Viagra effectively fights against the evilness of impotence. Also known by the name of "blue pill", Viagra has successfully achieved doctors compliance and has gained the reputation of being the most reliable and effective drug for impotence available in the market.

The process of erection is initiated when any sexual stimulus is received. The brain in response to such sexual stimuli sends signals to the penis. These signals reach the blood vessels of penis through the nerves. Endothelial cells, under the command of signals from the brain, start synthesizing Nitric Oxide. Endothelial cells, located in the walls of blood vessels of penis, release Nitric Oxide into the lumen of these vessels. Nitric Oxide awakes an enzyme called guanyly cyclase. Guanylyl cyclase, after its activation, stimulates the conversion of GTP into cGMP. cGMP has a dilating affect on the penile vessels. When the vessels dilate, small pores are created in their walls through which blood oozes out and finds its way into the empty spaces present in the spongy tissue of penis. Accumulation of blood into the empty spaces of the spongy tissue results in erection. However erection is halted if enough cGMP is not produced to dilate the vessels of penis. Viagra helps achieve erection by increasing the concentration of cGMP in the blood vessels, a factor necessary for the dilation of blood vessels of penis. The drug halts the enzyme responsible for splitting cGMP into GMP, thus raises the level of cGMP which promotes erection. To perform its action optimally, the drugs requires sexual stimulation to be provided with the process.

Possible side effects of the potent drug are dizziness, diarrhea, flushing of face, congestion of nose, runny nose, bluish visual responses and loss of hearing. If taken in dosage higher than once per day, its hypotensive effect might exaggerate not to mention increased level of its side effects. The drug is supposd to be administered orally half an hour before sexual interaction and its erection time is approximately four hours of efficacy during which any sexual stimulation would bring about a sustainable erection for desired copulation. Contraindications are nitrate drug use, erythromycin use, protease inhibitors use, liver diseases, kidney failure, shock, stroke and cardiac problems. Available dose forms of the blue colored diamond shaped pill of Viagra are 25 mg, 50 mg and 100 mg tablets to be ingested with glassful of water. Alcohol consumption is strictly prohibited as it might interact with drug metabolism.

The end to ED and impotence through Viagra has been made inevitable. Especially when this magical sexual enhancement could be affordably obtained from our original quality online pharmacy that manages successfully to provide Viagra of parent quality straight from its original founders, Pfizer.
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