2 doctors weighed in:

How long does it take fastin (phentermine) to get out of your urine?

2 doctors weighed in
Dr. Robert Kwok
Pediatrics
1 doctor agrees

In brief: Hard to tell...

It's hard to tell when there won't be any more medication in the body or urine of a particular individual.
The half-life of a drug can vary from person to person. Some websites say the half-life of Phentermine (fastin) is somewhere around 16-31 hours. If a half-life is 24hr (1 day), that means after 1 day, half the drug is still in the body (then 1/4, 1/8, 1/16, 1/32, ...1/64 remains after 6 days).

In brief: Hard to tell...

It's hard to tell when there won't be any more medication in the body or urine of a particular individual.
The half-life of a drug can vary from person to person. Some websites say the half-life of Phentermine (fastin) is somewhere around 16-31 hours. If a half-life is 24hr (1 day), that means after 1 day, half the drug is still in the body (then 1/4, 1/8, 1/16, 1/32, ...1/64 remains after 6 days).
Dr. Robert Kwok
Dr. Robert Kwok
Thank
Dr. Donald Alves
Emergency Medicine

In brief: About 14 days

Based on the internet research i did.
However, if you are obtaining / using it legitimately, it will not matter, as if positive, you will be asked for the prescriber's name / # to verify and will be non-issue. Good luck.

In brief: About 14 days

Based on the internet research i did.
However, if you are obtaining / using it legitimately, it will not matter, as if positive, you will be asked for the prescriber's name / # to verify and will be non-issue. Good luck.
Dr. Donald Alves
Dr. Donald Alves
Thank
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