How does Cialis work?
When a man is sexually stimulated, signals from the nervous system and the release of chemical messengers within the tissues of the penis allow him to have an erection.
One of these chemical messengers, called cyclic GMP, causes the blood vessels in the penis to widen by relaxing smooth muscle tissue. This results in more blood flow to the penis, making the penis larger and harder until full erection.
Cyclic GMP is normally regulated and constantly broken down by another chemical in the body called PDE-5. When there is more cyclic GMP than PDE-5, an erection results. Once the PDE-5 breaks down the cyclic GMP, the erection goes away.
Men with ED often cannot produce enough cyclic GMP. The little that is made is rapidly broken down by PDE-5, and blood flow is reduced, resulting in erectile failure.
Cialis drug is a PDE-5 inhibitor. It works by preventing the action of PDE-5, therefore stopping the breakdown of cyclic GMP.
This means that the blood vessels are kept dilated for longer, improving and maintaining blood flow to the penis, and therefore magnifying the natural erectile function.
* It is important to understand that taking Cialis will not just make you have a sudden or unexpected erection at inappropriate times. What happens after taking Cialis drugs is that, if you are not sexually stimulated, your body will not produce any Cyclic GMP and PDE-5, and without those present in your body, Canadian Cialis will have nothing to work on and will therefore remain inactive. Similarly, after sex, as sexual stimulation stops, your body will stop the production of Cyclic GMP and PDE-5, and your erection will go away. Cheap Cialis will remain in your system for its duration, so if you are stimulated while it’s still present in your body, it will help you have and keep an erection.
Other drugs that operate the same way as Cialis are Viagra and Levitra.