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How long does lidocaine stay in your system

A male asked:
Dr. Gurmukh Singh
48 years experience Pathology
No: Lidocaine is not part of the 12 drug panel. You may consult this site for information on this topic. https://www.anylabtestnow.com/tests/drug-test-12- ... Read More

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A 34-year-old member asked:
Dr. Alexander Bankov
36 years experience Anesthesiology
Not very long: The clinical effect should be completely gone in two hours; although the essays will probably still detect the drug, it is not done in practical setti ... Read More
A 43-year-old member asked:
Dr. Richard Pollard
29 years experience 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).
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8 thanks
Dr. Anthony Silvestro
17 years experience Dentistry
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.
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6 thanks
A 47-year-old member asked:
Dr. Gary-Anthony Lawson-Boucher
21 years experience Anesthesiology
Lidocaine: Lidocaine will last 45'. It lasts up to 90' if Epinephrine is added.
A 45-year-old member asked:
Dr. Tito Vasquez
24 years experience Plastic Surgery
1/2 to 1 1/2 hours: Depending on where the Lidocaine is placed, the relative blood flow and the ph level of the tissues can affect how long Lidocaine lasts. It may be ne ... Read More
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1 thank
A 32-year-old member asked:
Dr. Anthony Pollizzi
35 years experience Anesthesiology
Minutes: Lidocaine injection works within minutes; a patch would take a bit longer to work.
A 35-year-old member asked:
Dr. Ionel Rad
Dr. Ionel Rad answered
16 years experience Anesthesiology
It depnds: Duration of local anesthetics depend on many variables, but here is a verbatim note about lidocaine/epi from lexi drugs: "onset of action: peak effect ... Read More
A 32-year-old member asked:
Dr. Dan Fisher
26 years experience Internal Medicine
Depends on route: Injected it takes only a minute or so. Topically it takes 15 or more.
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1 thank
A 37-year-old male asked:
Dr. Julian Goldman
35 years experience Anesthesiology
1-3 hours: An injection of Lidocaine will numb an area for 1-3 hours. But it stays in the body for several more hours while it is broken down by the liver and re ... Read More
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A male asked:
Dr. Paul Grin
Dr. Paul Grin answered
35 years experience Pain Management
Rule of 38: The lidocaine oral topical doses should not be administered at intervals of less than 3 hours, and not more than 8 doses per day.

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