Thanks to such incredible invention as the Internet, people from all around the world are able to order different services and goods to satisfy their needs. One of the best options in purchasing medical preparations is to use the services of special online pharmacies. With the help of such services, any online user is capable of receiving any good, which he or she needs very fast and even without a need of a living home. One of such services is [...]
Before trying generic Viagra, you need to know how it works. Firstly, you should know that it is classified as a PDE5 inhibitor, and here’s why. When erection happens, the brain sends a signal to the penis, and that releases a special chemical called nitric oxide. It is a chemical messenger needed for stimulating the cGMP enzyme, whose acronym stands for “cyclic guanosine monophosphate”.