Viagra Information
Ed-tab.com is a social service site run “by men for men” to help men find the best deals from online pharmacies. Using our Viagra price comparison tool you can save money but still order Viagra online without any risk of getting ripped off or cheated. Viagra is a prescription drug used to treat erection difficulties, such as erectile dysfunction (ED). Since it first became available in 1998, the prescription drug Viagra has helped about 16 million men around the world to improve their sex lives. Amazing, 9 tablets are dispensed every second worldwide. And no other therapy or prescription drug for erectile dysfunction has been studied as much or has the same amount of real-world experience as Viagra since its launch. It’s no wonder more than 600,000 doctors have chosen the prescription drug Viagra for their patients with ED. Fact is, when taken correctly, Viagra works for most men. Studies show that it works for up to 4 out of 5 men (versus 1 out of 4 on sugar pill). Viagra improves erections for most men no matter how long they have had ED, what caused it, how often they have it, or how old they are.
Real Name: Sildenafil citrate
Product name: Viagra Online
Appearance: blue pill, Label “GW” 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.
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
Viagra history: 
Viagra the wonder drug which helps millions of men around the world have a wonderful love life was an accidental invention. In the year 1991 three doctors were working in a research lab in Kent, United Kingdom discovered that the chemical compounds of the pyrazolopyrimidinone class (sildenafil-mai ingredient of Viagra) were very effective in treating heart related problems. The same year Pfizer registered a patent for sidenafil as heart medicineLater in 1994 when trials were done one sidenafil as a heart medicine it was discovered that it increases blood flow into the penis thus helping patients in getting and sustaining an erection. Immediately processes to synthesize sidenafil were formed and thus Viagra was formed. The FDA approved it on March 27, 1998, and it became the first pill to treat impotence and still by and far still remains the best trusted by millions of user’s world over. In the next 5 years a total of around 50,000 patients from age of 19 to 87 were treated and improvement and containment of erection was demonstrated and statistically significant.
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.
Common side effects:
Sneezing, headache, flushing, dyspepsia, prolonged erections, palpitations and photophobia. Visual changes including blurring of vision and a curious bluish tinge
So, how does 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.
Viagra 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.
Official contraindications include:
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When taking other nitric oxide donors, organic nitrites and nitrates (which includes glyceryl trinitrate , sodium nitroprusside , amyl nitrite )
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In men for whom sexual intercourse is inadvisable due to cardiovascular risk factors
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Severe hepatic impairment
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Severe impairment in renal function
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Hypotension
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Recent stroke or heart attack (myocardial infarct)
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Hereditary degenerative retinal disorders (including genetic disorders of retinal phosphodiesterases)
You should read the info on this page before Order Viagra Online, and it should be taken as one tablet, with or without meals, up to one hour before sexual activity and it should not then be take again for 24 hours. Ed-tab.com recommends that you read carefully any leaflets that come supplied with your medication.
Ed-tab.com provides generic version of viagra.
What are generic drugs?
When a drug company first invents a drug that company is the only one allowed to make that drug in the same country for a certain number of years. After this time period, other companies are allowed to make the same drug. These drugs are called generics. The original drug (e.g. Viagra) is called a brand name drug. Brand name drugs and their generics are IDENTICAL in terms of active ingredients. The generic pills may look different (because they are made by a different company) but inside is exactly the same active ingredient, which works in exactly the same way. The only difference between brand name drugs and generic drugs is that generics are always much less expensive.