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A member asked:

How does viagra (sildenafil) help an erection problem?

A doctor has provided 1 answer
Dr. Robert Killian answered

Specializes in General Practice

Erectile Function...: Viagra, levitra, (vardenafil) and Cialis are drugs that mimic a hormone produced in the veins at the base of the penis that cause venous constriction. This is the natural way that erections occur. The arteries can pump blood into the tissue but less blood can be released due to the veins being constricted. It is a fairly simple and wonderful gift men have in our generation.

Dr Ali agreed

Answered 6/24/2014

5.7k views

Thank

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Is it possible for an 80 year old get an erection without viagra (sildenafil)?

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I can't get erection for 20min after right after ejaculation? Should I use viagra (sildenafil)?

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