Today millions of men, affected with erectile dysfunction, have taken Viagra (sildenafil citrate). Viagra is the first oral pill to treat erectile dysfunction and is known to have been very effective in helping men having and maintaining an erection.

Why do people buy Viagra?

Impotence is caused by both medical and psychogenic factors. And Viagra is tested to be effectual in dysfunction treatment for both cases. That is why men rely on Viagra. It enhances nitric oxide discharge in the body, which usually happens during sexual stimulation. Nitric oxide relaxes the smooth muscles and allows more blood flow into certain penile areas, thus causing an erection.

What to consider before buying Viagra?

It is important to consider the side-effects of Viagra while buying. Its serious side-effects include hypotension, priapism, stroke, myocardial infarction, increased intraocular pressure, ventricular arrhythmias, etc. And among the most commonly reported fallouts of this drug are headache, stomach ache, sneezing, palpitations, flushing, prolonged erections, photophobia, and visual impairment.

Another word of caution for patients treated for HIV with Protease inhibitors. Viagra is also not recommended for people having nitroglycerin, as this may adversely impact and lower the blood pressure levels.

How to buy Viagra?

Viagra is not sold over-the-counter in local pharmacies. It is available only by prescription. Ask a licensed medical practitioner about the dosage you will need. It is always wise to get medical advice before you buy Viagra. But it is more cheap and comfortable to buy Viagra online pharmacy. There are also many online prarmacies that sell Viagra online.