Generic Viagra also contains Sildenafil Citrate as its active chemical compositions. Sildenafil Citrate is an FDA approved chemical compound that is safe and effective for the treatment of Viagra. This medication works by lessening the effect of an enzyme called PDE5 which develops blockages and restricts the normal flow of blood.

Sildenafil Citrate allows the penile arteries to relax and expand which in turn increases the flow of blood into the penile region and allows men to achieve a stiff and an erect penis. Generic Viagra will not get you erection by itself, the man needs to be sexually excited or aroused by his partner. Besides this, it does not protect you from any sexually transmitted diseases such as HIV and AIDS.

The ideal effect of this drug last up to four to five hours. Some of the specific restrictions of taking this medication are that this drug should be taken just once in a day; do not take this drug if you are already taking any other nitrate based medication. And the most important note is that; take this medication treatment under a doctor’s supervision.