Sildenafil citrate is the fifth type phosphodiesterase inhibitor (PDE-5). PDE type-5 is an enzyme that produces the human organism itself. It increases vascular tone, tightens them whereby blood is squeezed out of the cavity and supported by the penis in the flaccid state. Once in the bloodstream, sildenafil citrate inhibits and stimulates the production of the enzyme activity of nitric oxide in the body which, on the contrary reduces vascular tone. As a result, blood vessels relax, blood fills them tight, there is a strong erection. As the surfactant delay generation PDE5 is a longer penis remains erect. Sexual intercourse lasts longer.
Importantly, generics are virtually impossible to purchase in pharmacy chains. Fortunately, you can order Sildenafil 100mg at online pharmacies, or make your choice in favor of way more costly original drugs.
Online shopping does not require a prescription from a doctor, plus you are spared from regular medical visits. You also save your time when shopping online. In the online pharmacy your purchase remains confident and no one knows the details except you and manager. Delivery is also confidential as well. Finally, the prices on the site are available for a wide range of buyers.