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Zithromax Z-Pak - How long after you finish taking the medication does it keep working?

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7 Sep 2009

Hi, I am a CMA and have been in the medical field for 7 years. A z-pack you take for 5 days and it stays in your system for 5 days after you finish it. In total the medicine will be in your body for 10 days. :-)

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