Author:
gosby jones (viagra 100mg pfizer)
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Date Posted: 20:14:16 11/13/06 Mon
In reply to:
IndianSEO
's message, "Viagra - Buy Viagra Online" on 00:53:37 05/12/06 Fri
>Viagra
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> Viagra
>
>Name: Sildenafil citrate
>Product name: Viagra
>
>Appearance: blue pill, Label "Pfizer" on one side,
>"VGR xx" on the other. XX represents dose of active
>substance in one pill. For example, VGR 50 means that
>it is Viagra 50 mg, one tablet contains 50mg of
>Sildenafil citrate.
>
>Manufacturer: Pfizer - pharmaceutical company
>
>
>Chemical name: 1-[4-ethoxy- 3-(6,7-dihydro- 1-methyl-
>7-oxo- 3-propyl- 1 H -pyrazolo [4,3- d
>]pyrimidin-5-yl) phenylsulfonyl]- 4-methylpiperazine
>citrate
>
>Molecular weight: 666.7 g/mol
>
>Picture of molecular structure:
>
> How it works:
>
>One part of of the physiological process of erection
>involves the release of nitric oxide (NO) in the
>corpus cavernosum . This activates the enzyme
>guanylate cyclase and result is increased levels of
>cyclic guanosine monophosphate (cGMP) which leads to
>smooth muscle relaxation in the corpus cavernosum,
>resulting in increased inflow of blood and an erection.
>
>Sildenafil is a potent and selective inhibitor of cGMP
>specific phosphodiesterase type 5 ( PDE5 ) which is
>responsible for degradation of cGMP in the corpus
>cavernosum. This means that, with Viagra on board,
>normal sexual stimulation leads to increased levels of
>cGMP in the corpus cavernosum which leads to better
>erections. Without sexual stimulation and no
>activation of the NO/cGMP system, Viagra should not
>cause an erection
>
>In common words:
>Drug works by increasing blood flow to the penis. It
>is not a hormone or an aphrodisiac. Once you take it,
>Viagra can work in as quickly as 30 minutes. VIAGRA
>works for 4 hours so you can set your own pace. If
>taken with a high fat meal, there may be a delay in
>absorption of Viagra and the net effect might be muted
>slightly as the plasma concentration will be lowered.
>Some reports say that Viagra can causeenhanced sexual
>pleasure for women! It is by increasing blood flow to
>their sexual organs.
>
>Dosage: The dose of Viagra is 25mg to 100mg taken once
>per day between 0.5 to 4 hours before sexual activity,
>but as all prescription drugs, proper dosage is at the
>discretion of a licensed doctor. It is recommended to
>start with a dosage of 50 mg and then lower or raise
>the dosage as appropriate.
>
> Attention!:
>
>Viagra as a pill isn't scored, meaning there is no
>guarantee that the drug is evenly distributed
>throughout the tablet. It is not advisable to split it
>in pill-splitters to change a dose to half.
>
>Official contraindications include:
>
>When taking other nitric oxide donors, organic
>nitrites and nitrates (which includes glyceryl
>trinitrate , sodium nitroprusside , amyl nitrite )
>In men for whom sexual intercourse is inadvisable due
>to cardiovascular risk factors
>Severe hepatic impairment
>Severe impairment in renal function
>Hypotension
>Recent stroke or heart attack ( myocardial infarct )
>Hereditary degenerative retinal disorders (including
>genetic disorders of retinal phosphodiesterases )
>Amongst Viagra's serious adverse effects are: priapism
>, severe hypotension , myocardial infarction ,
>ventricular arrhythmias , sudden death, stroke and
>increased intraocular pressure.
>
>Common side efects: sneezing, headache, flushing,
>dyspepsia, prolonged erections, palpitations and
>photophobia. Visual changes including blurring of
>vision and a curious bluish tinge
>
> What is an Erectile Dysfunction:
>
>ED can be a physical problem. Normally, when a man is
>sexually excited, his penis fills with more blood than
>usual and it becomes erect or hard. When a man has ED,
>his penis does not fill with enough blood to get erect
>or hard. Or it may not stay erect long enough to
>complete sex.
>
>Many men have this health problem. In fact, about 30
>million men in the United States have ED to some
>degree. And studies show that about half of the men
>between the ages of 40 and 70 have ED to some degree.
>
> Viagra history:
>
>Our blue pill was initially developed to treat heart
>disease ( angina ). During trial studies, the penile
>erection enhancing effects were noticed.
>
>The drug was patented in 1996 , approved by the FDA on
>March 27 , 1998 (becoming the first pill approved to
>treat erectile dysfunction in the United States) and
>offered for sale in the United States later that year.
>It soon became a smashing success.
>
>Even though Viagra is only available by prescription
>from a doctor, it was advertised directly to consumers
>on TV (famously being endorsed by Bob Dole ). It is
>likely that many men (and some women) experiment with
>the drug to increase sexual prowess or pleasure.
>
> Competitors:
>
>There are other drugs that work on same mechanism. The
>most famous are Cialis and Levitra.
>
> Other important Viagra sites:
>
>Viagra home page
>Pfizer home page
>
>
>© 2002 www.viagrapills.com All rights reserved
>
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