A member asked:

How much time the viagra, (sildenafil) cialis and other ed medications work?

A doctor has provided 1 answer

15-60 minutes: In order to get into your system. Cialis may be the fastest onset. If you mean duration of action, viagra and Levitra (vardenafil) work for up to 6 hours or so and Cialis be effective for up to 36 hours, but it varies a lot from person to person.

Answered 3/23/2017

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