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A member asked:

Viagra (sildenafil) can seen in body system for how long?

A doctor has provided 1 answer

Don't know: What you mean by "seen", as i'm not sure how easy or common it is to check for blood levels. If you mean the effects, they are generally gone after 6 hours, but can persist different lengths of time in different individuals.

Dr Chuu agreed

Answered 10/23/2017

4.9k views

Thank

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Dear Doctor, if I took Viagra or medicine containing sildenafil some 30 minutes before sex can I last longer in bed say for example first round lasting for 15 minutes from the usual 7 minutes and 2nd round for 45 minutes than the usual 20 minutes?

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