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Phentermine - how long does adipex stay in your system?

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9 Jun 2011

Adipex (phentermine) has a half life of approximately 25 hours.

It takes 5.5 half life's for the medicine to be totally eliminated.

Therefore Adipex will be in your system for approximately 137.5 hours (5.5 x 25) i.e.5.7 days (or 6 days).

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