How Long Does Phentermine Stay In Your System?


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James Parnell Profile
James Parnell answered
Numerous methods of testing can be used to detect the presence of Phentermine in your system.

The body will rid itself of the drug eventually, though the time this takes will vary from person to person.

How long does Phentermine stay in your system?
  • Urine testing is by far the most common method of drug screening, because it is both cheap and effective. Urine screens can detect the presence of Phentermine in the urine of a user for up to two days after the drug was last taken.
  • Mouth swab tests are far less common, but still have their uses. They can find traces of Phentermine in the saliva for up to two days after consumption.
  • Hair follicle testing is used if a longer-term drug history is required for an individual. This form of drug testing can find traces of Phentermine in the hair follicles for approximately three months after it was last taken.
Phentermine is of a similar molecular structure to amphetamine, and is used as a stimulant. It is normally prescribed as an appetite suppressor.
Aisha Profile
Aisha answered
Phentermine has an adult half-life of between 7 to 20 hours. So assuming a 7 hour half life, over 90% of the medication will be cleared from your system in about 24 hours. And according to the 20 hour half life, it would take around 80 hours to clear.

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