A 39-year-old male asked:
how long will the over-the-counter diet pill fastin (phentermine) test positive in you urine?
1 doctor answer
Dr. Donald Alves answered
23 years experience Emergency Medicine
Good luck!: I show the generic (phentermine) still as a prescription-only medication. So, whatever is in the over-the-counter version is not likely its true namesake, or potentially in a very reduced strength--either of these may not give you the results you are hoping for, and toxicity risk. Phentermine can show in urine drug screen for 10-14 days per internet resources.
Answered on Jun 30, 2014
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