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how long does phentermine stay in system?

1 doctor answer
Dr. Kenneth Smith
31 years experience Internal Medicine
Phentermine: This medication is generally dosed once to twice daily. Clinical effect generally gone in twenty four hours. Blood levels generally depleted in five half lives believe 60 hours.
Answered on Feb 17, 2020
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28hrs: On average, 90% of phentermine is cleared by 28hrs with a great variation among indiviuals.

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