Viagra (Sildenafil Citrate) is the first oral prescription pill approved by the FDA to treat male erectile dysfunction.
Viagra is one of the best-known drugs of all time. It causes a man who is sexually stimulated to get an erection.
Sildenafil Citrate, its active ingredient is used to treat erectile dysfunction (impotence) in men. The pill works by blocking a chemical that causes blood to leave the penis. More blood in the penis means an improved erection.
Viagra works for about 4 or 5 hours, but it can also be effective up to 12 hours taking into account individual peculiarities of every person.
Viagra is not just for penile erection. Many people are using Viagra for other purpose as well. This is not surprising as Viagra was created first as a medicine for hypertension (commonly known as high blood pressure and angina pectoris (chest pains because of lack of blood supply due to poor circulation). However, further on in Pfizer's research, it was found out that the drug has no effect on the said conditions but affects the penile erections. At this time, there were no other medicines that worked against male impotence, so it was developed later on as a remedy for erectile dysfunction.
The popularity of Viagra has increased a lot over the past years. This marvelous little blue pill has brought passion and excitement back into people's sex lives. Viagra has proven to be a bestseller with good reason: it's effective for many people. Despite side effects such as headaches and anecdotal reports of possible links to heart attacks, it has helped millions.
The researchers noted the younger the men were who had erection problems, the greater the increase in sexual function and satisfaction was when using Viagra.