Mechanism of Action

Viagra® is dispensed as a pill and ingested orally. Approximately 30-60 minutes later the drug is absorbed in the bloodstream. Viagra® then functions as an inhibitor to an enzyme called phosphodiesterase type (PDE5) which is found primarily in the penis. By inhibiting PDE5, smooth muscle in the penis remains relaxed for a longer period. This allows for increased blood flow into the cavernous tissue of the penis thereby generating an erection. Viagra® is unique in that it increases a natural occurring process, therefore, only through sexual stimulation will an erection occur.

This website in not directly or indirectly associated with Pfizer in any way. Copyright© www.viagra-impotence-forum.co.uk ALL RIGHTS RESERVED Viagra® is a prescription medicine used to treat Impotence. Only a physician should decide if it is appropriate for you to use Viagra or other medications. These pages are only a summary of health related topics. If you have further questions concerning your health or would like more information about Viagra®, consult you personal physician or pharmacist. Please be responsible with your health. Schedule regular appointments with your family physician and/or your urologist so they may address and treat the underlying conditions responsible for your Impotence.