Impotence is a sexual dysfunction that affects millions of men all over the world. Men with impotence or erectile dysfunction are not able to obtain and or to sustain a penile erection. An erection is normally obtained by increasing blood floor to the penis. This should occur when one is sexually aroused. Viagra unlike other treatments for impotence acts by enhancing the smooth muscle relexant effects of nitric oxide.
Nitric oxide is a chemical that is normally released in response to sexual stimulation.
This smooth muscle relaxation allows increased blood flow into areas of the penis leading to an erection. Hence viagra does not directly cause penile erections. If you would like to comment or ask other questions mail the web doctor . The responses and questions will answered in this section.