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How Fast Does MiraLAX Take to Work?
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MiraLAX® (polyethylene glycol 3350) is a nonprescription laxative medication used to treat occasional constipation. It comes in the form of a powder, which is dissolved in four to eight ounces of liquid and swallowed by mouth once daily. But how fast does MiraLAX take to work?
Typically, MiraLAX will cause a bowel movement in one to three days. The active ingredient in this product is polyethylene glycol 3350 (sometimes abbreviated as PEG-3350), which works by drawing water into the colon, making the stool soft, and increasing the number of bowel movements.
Do not take more than the standard dosage if you do not have a bowel movement right away. Also, do not take a double dose of this medication or use more than one dose in a day unless your healthcare provider tells you to do so.
(Click MiraLAX for more detailed information on how fast this laxative works, as well as information on safety precautions, potential side effects, and general dosing guidelines.)
Written by/reviewed by: Susan Lakey, PharmD, MPH
Last reviewed by: Kristi Monson, PharmD