A member asked:

How can levitra (vardenafil) work exactly?

A doctor has provided 1 answer
Dr. Heidi Fowler answered

Specializes in Psychiatry

Levitra (vardenafil): “Vardenafil prevents an enzyme called phosphodiesterase-5 (PDE-5) from destroying cGMP so that cGMP persists longer. The longer cGMP persists, the more prolonged the engorgement of the penis.” See: http://www.medicinenet.com/vardenafil/article.htm

Answered 5/14/2015

2.8k views

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