Viagra is perhaps the mostly widely used pharmaceutical brand name in the world. Chemically Viagra is Sildenafil Citrate. The blue pill (so named for its distinctive blue colour) was initially tested as an anti-hypertensive and for treating angina pectoris. However once Pfizer had discovered its effectiveness in treating erectile dysfunctions it was immediately marketed as a drug for treating erectile dysfunction.
Popularly known as Vitamin V nearly 1 billion Viagra (and other Sildenafil Citrate brands) pills are sold every year, with competitors choosing to market Sildenafil Citrate as Revatio and other brand names, Viagra is still a popular name for Sildenafil Citrate. Viagra has a complex mechanism of action and acts by inhibiting the action of PDE5. Viagra is the most successful drug in treating erectile dysfunction in the history of mankind. However more and more people have started using Viagra as a aphrodisiac as a means to improve sexual performance.
Viagra On-line sales
Initial sale and purchase of Viagra was restricted only to licensed pharmacies and to prescription holders. This was due to the initial reports of side effects that Viagra was supposed to have and the drug being in clinical testing, however with later improvements and further clinical testing Viagra is now available on-line after filling out a consultation form and is soon slated to be a completely over the counter drug. Once Viagra was FDA approved the on-line sales of Viagra have made it possible for people with erectile dysfunction to obtain the drug confidentially and without going through a lengthy consultation procedure every time.
Recently many fake vendors have started selling drugs that look similar to Pfizer's Viagra, in addition they have also started making claims to having created herbal drugs that have similar effectiveness as Viagra. Numerous spurious drugs sites are available on the internet and it has become increasingly important for users who purchase Viagra on-line to keep a look out for fake claims and spurious drugs.
Viagra Alternatives
Cialis(Tadalafil) and Levitra (Verdanafil) are two second generation drugs that are offered as alternates to Viagra, both drugs claim to have lesser side effects and a longer period of effectiveness. Cialis and Levitra claim to work for a longer duration and require smaller dosages when compared to Viagra. However the on-line and counter sales of Viagra are testimonial to the fact that Viagra is still the number one drug in treatment of erectile dysfunctions.
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