Sildenafil citrate features.

Features of Viagra is that it restores the ability of men to erect for up to 4 hours. It is important to note that the erection occurs only when sexual initiation. Regarding the mechanism of "Viagra", it is to increase the amount of blood coming into sexual member that helps men have a natural erection. In other words, Sildenafil is only natural mechanisms of a penis and the novelty of its undeniable and secret enormous popularity.

The product "Viagra" evaluated more than 3,000 men aged 19 to 87 years in research erektilnyh dysfunction of the world. The results of these studies indicate that the drug "Viagra" is effective to restore erectile function and improvement in successful sexual acts with a large number of patients.

Rare cases of "failures" associated with:

1. HEAVY genital trauma or acute violations of age.
2. Individual particular organism.
3. The failure of receiving Viagra (time, alcohol, fatty foods, etc.).
4. Lack ISKRENNEGO ZHELANIYA BLIZOSTI with this woman.