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A 41-year-old member asked:

How long does miralax (polyethylene glycol) take to work?

1 doctor answer1 doctor weighed in
Dr. Ryan Phasouk
Family Medicine 18 years experience
1-3 days: Miralax (polyethylene glycol) can take 1 to 3 days to work before effective. Remember that this is not a stimulant laxative.

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A 36-year-old member asked:

How long does it take for miralax (polyethylene glycol) to work?

1 doctor answer1 doctor weighed in
Dr. Ryan Phasouk
Family Medicine 18 years experience
1-3 days: The onset of MiraLAX (polyethylene glycol) is usually 1-3 days. Remember, it is an osmotic agent that draws water into the stool and hence makes it easier to have a bowel movement.
A 43-year-old member asked:

Do i take miralax (polyethylene glycol) in the morning or at night?

1 doctor answer2 doctors weighed in
Dr. Russell Juno
General Surgery 22 years experience
Either time if good.: If you haven't had a bowel movement and are using MiraLAX (polyethylene glycol) now try it now if it is early in the day. If it is later then try it in the evening. If no effects by morning then repeat a dose.
A 35-year-old member asked:

How long will it take for miralax (polyethylene glycol) to work?

1 doctor answer1 doctor weighed in
Dr. Philip Gasseling
Pediatrics 48 years experience
Few days: not really laxative to induce bowel contractions but a nonabsorbable material that cause the stools to become softer, and lubricates the bowel to cause easier passage of stool
Brooklyn, NY
A 46-year-old male asked:

How long can I take miralax (polyethylene glycol) for?

1 doctor answer2 doctors weighed in
Dr. Liesa Harte
Family Medicine 29 years experience
Miralax (polyethylene glycol): You can take miralax (polyethylene glycol) indefinitely as long as you need it. Best wishes.
A 32-year-old member asked:

How long will it take for miralax (polyethylene glycol) to work usually?

3 doctor answers7 doctors weighed in
Dr. Peter Kurzweil
Internal Medicine 50 years experience
Hours to days.: Miralax (polyethylene glycol) works by absorbing water from the colon allowing it to move easier through the bowel and pass the stool. It probably needs to be taken daily to be effective . It is not like milk of magnesia or citrate of mnagnesia, which should only take few hours to be effective.

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Last updated May 19, 2021

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