A member asked:

If i take pre workout,c4, in the morning(6am) can i take 25 mg of viagra at night(7pm)? also if i take creatine daily, will that interact with viagra?

A doctor has provided 1 answer
Dr. Ira Friedlander answered

Specializes in Cardiac Electrophysiology

There is no concern.: Neither c4 nor creatine will react with Viagra in a negative way.

Answered 9/14/2018

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What if I drink creatine (c4) even though I don't work out?

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