It has happened to most guys at one point or another, you’ve got a chick waiting for some action, and you just can’t talk your penis into getting on track with what is supposed to happen now. Well, that problem is slowly but certainly becoming a thing of past, ever since company Pfizer has released the drug Viagra in 1998. Ever since then, it has taken the biggest share of erection dysfunction market and is not looking like it will go down in popularity at any point, so if you’re looking for a way to make your bedroom performance much more impressive, Viagra is the way to go. While at first developed as an aid for people that are having problems with getting erect, it can be used by people that have more or less normal sex life as well, it works for them too by enhancing their potency and making their erection longer lasting.
To figure out just how does a small blue pill help a man with one of his biggest problems he can face, you need to understand mechanics behind an erection with males. When something sexually stimulating is presented to a man, brain send signals to a specific set of cells that start producing nitric oxide and start injecting it into the blood flow. Nitric oxide stimulates production of a specific enzyme which gives Cyclic Guanosine Monophosphate as one of the products. This chemical is the one we can thank for erections, what it does is stimulate blood flow into the penis and it also narrows down the valve that leads blood out of it, creating pressure and leading to an erection. It’s easy to see how erection is not a thing of muscles and bones, but just a simple pressure mechanism. The Cyclic Guanosine Monophosphate (cGMP) does not have a long life time inside the body since parallel to it nitric oxide also stimulates production of PDE, an enzyme that deactivates cGMP. It is at this point in the system that Viagra takes it’s effect, it makes PDE inert, giving cGMP 
much longer lasting effect and making erection last that much longer.
Naturally, there are some side effects you should be aware of before you get right down to using Viagra to solve all of your bedroom problems. People with weak hearts are suggested to avoid Viagra, as are men that are already on some medication, especially if that medication has some effect on nitric oxide. The most famous side effect of the blue pill is making a man see light blue sheen on everything for a while. The reason behind this is the fact that there is a form of PDE which is affected by Viagra inside of our brains as well, not just in tissue near penis, and Viagra sometimes iterracts with it as well. Light headaches are also a possibility when taking Viagra. Make sure you talk to your doctor before you start using it. While cases of severe side effects are extremely rare, it’s always best to think about using a potent drug like Viagra.