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Frequently Asked Questions

    What time of day should I take MiraLAX®?

    There is no recommended time of day to take MiraLAX®. Begin taking MiraLAX® at the first signs of constipation and continue taking until you experience relief (up to seven days).

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    How do I take MiraLAX®, and what the right dose?

    Adults and children ages 17 and older should take 17 grams of powder. Use the MiraLAX® bottle top to measure 17g by filling to the indicated line in the cap. Mix and dissolve into 4-8 ounces of any beverage (hot, cold or room temperature). For children ages 16 or under, ask a doctor. Single-dose packets of MiraLAX® are also available.

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    How many days can I use MiraLAX®?

    You should use MiraLAX® for no more than seven days. If you need to use a laxative for longer than one week, stop use and consult your doctor.

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    How long does it take for MiraLAX® to work?

    MiraLAX® generally produces a bowel movement in one to three days. Because it works naturally with the water in your body without causing harsh side effects, you do not need to worry about sudden urgency.

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    Does MiraLAX® cause any side effects?

    MiraLAX® does not cause harsh side effects such as gas, bloating, cramping or urgency, only gentle, predictable relief from constipation. When using this product, you may have loose, watery or more frequent stools.

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    Is MiraLAX® safe?

    MiraLAX® works with the water in your body to hydrate, soften and ease — unblocking your system naturally without harsh side effects. If you are taking a prescription drug, you should ask a doctor or pharmacist before use.

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    Should I use MiraLAX® if it's short-listed or expired?

    It is not recommended to use MiraLAX® beyond the labeled expiration date.

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    Is MiraLAX® gluten-free?

    Yes, MiraLAX® is gluten-free, sugar-free and preservative-free.

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    Is there a coupon for MiraLAX®?

    Yes, follow this link to print a coupon.

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    Is there any difference between MiraLAX® and Prescription (Rx) PEG 3350 (Polyethylene Glycol 3350)?

    MiraLAX® is the same as Rx PEG 3350. Shortly after Nov. 2, 2018, you will no longer be able to purchase Rx PEG 3350, but MiraLAX® will continue to be available over the counter (OTC).

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