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A 29-year-old female asked:

If miralax is not absorbed, does it stay in the gut forever? where does it go?

1 doctor answer1 doctor weighed in
Dr. Andrew Seibert
Gastroenterology 35 years experience
Primarily fecal. : Consistent with its desired effect as an osmotic laxative, the vast majority of MiraLAX is excreted in the feces. There is a slight amount absorbed and excreted through the urine, but it is small. The half-life of MiraLAX is unknown. Good question and good luck.

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Last updated Jun 27, 2017

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