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A member asked:

How long does lidocaine last for?

7 doctors weighed in across 3 answers
Dr. Richard Pollard answered

Specializes in Anesthesiology

1.5 to 2 hours: Though the half-life of Lidocaine is 1.5 to 2 hours, the clinical effectiveness of Lidocaine is usually much shorter (around 30 - 45 minutes).

Dr Fowler and 3 doctors agreed

Answered 9/6/2019

5.6k views

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30 min to 2 hours: 30 minutes or so for plain lidocaine, and up to 2 hours or so for Lidocaine with Epinephrine in it.

Answered 5/10/2017

5.6k views

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Lidocaine: Lidocaine will last 45'. It lasts up to 90' if Epinephrine is added.

Answered 7/27/2016

4.5k views

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