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khagihara
khagihara, Doctor
Category: Medical
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Experience:  Trained in the multiple medical fields for many years.
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how long does the drug phentermine hcl 37.5 mg stay in the

Resolved Question:

how long does the drug phentermine hcl 37.5 mg stay in the body after taking it. does this drug show up in a drug test. if so how many days prior can I stop taking the drug so the test will not be positive
Submitted: 4 years ago.
Category: Medical
Expert:  khagihara replied 4 years ago.

khagihara :

I am honored to assist you. My answers are for information purposes only. They don’t substitute for a visit to a doctor’s office. Doctor/patient relationship is not established.


It cross-reacts methamphetamine and can cause false positive for it although phentermine itself doesn't show up in a drug test.

khagihara :

But it doesn't effect on the confirmation test (GC/MS).

khagihara :

It is important to list the medication in the drug test form.

Customer:

I havent taken this drug in a like a month I think, so basically if I take a durg test tomorrow, it will not show at all.

khagihara :

it doesn't effect on the confirmation test (GC/MS) for methamphetamine.

khagihara :

It will not show up.

khagihara :

The half-life is 16 to 31 hours.

Customer:

because I just got accepted to a nursing program and I just wanted to know and if I did take it how long can I stop taking it so that it will not show at all

khagihara :

It will be less than 0.1 mg in 10days after the intake.

khagihara :

It will not be detected in a month.

khagihara :

You don't need to worry about it.

Customer:

what about like less than one month I cant help it Im a worry wart lolol I stop taking the med I didnt like how it made me feel

khagihara :

What is the reason you took it?

Customer:

to lose weight

khagihara :

Did your doctor prescribe it?

Customer:

yep

khagihara :

Even though it is detected as phentermine in the confirmation test, it doesn't affect the acceptance of the nursing program because it is a prescription medication. You should honestly write down that you took it 1 month ago in the form as a prescription medication.

khagihara :

If necessary, they will contact your doctor who prescribed it.

Customer:

ok thank you

khagihara :

You are welcome.

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