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A member asked:
After 20 yrs of smoking i am trying to quit. i am on day 4 without a cigarette. how long does it take for all the nicotine to be gone?
A doctor has provided 1 answer
It's hard to be sure: Nicotine has relatively short half-life (30-min-120min) because it is broken-down by liver via oxidation process and thus disappears rather quickly--hence people feel need to smoke often. Chronic smokers will have nicotine in body for longer, but i would guess after 1 wk, there isn't much left to bother you. Traces of that can still be detected up to 2 months later. Congrats on quiting. Good luck.
Answered 2/25/2016
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