Medication

Polyethylene Glycol

Generic name: polyethylene glycol 3350 · Brand names: Miralax

Osmotic Laxative [epc]

Information sourced from FDA Structured Product Labeling, updated May 4, 2026.

What is it used for?

Use relieves occasional constipation (irregularity) generally produces a bowel movement in 1 to 3 days

How to take it

Directions (Bottle Only) do not take more than directed unless advised by your doctor the bottle top is a measuring cap marked to contain 17 grams of powder when filled to the indicated line (white section in cap) adults and children 17 years of age and older: use once a day fill to top of white section in cap which is marked to indicate the correct dose (17 g) stir and dissolve in any 4 to 8 ounces of beverage (cold, hot or room temperature) then drink do not combine with starch-based thickeners used for difficulty swallowing ensure that the powder is fully dissolved before drinking do not drink if there are any clumps do not use no more than 7 days children 16 years of age or under: ask a doctor Directions (Packet Only) do not take more than directed unless advised by your doctor adults and children 17 years of age and older: use once a day stir and dissolve one packet of powder (17 g) in any 4 to 8 ounces of beverage (cold, hot or room temperature) then drink do not combine with starch-based thickeners used for difficulty swallowing ensure that the powder is fully dissolved before drinking do not drink if there are any clumps do not use more than 7 days children 16 years of age or under: ask a doctor

Warnings

Warnings Allergy alert Do not use if you are allergic to polyethylene glycol Do not use if you have kidney disease, except under the advice and supervision of a doctor Ask a doctor before use if you have nausea, vomiting or abdominal pain a sudden change in bowel habits that lasts over 2 weeks irritable bowel syndrome Ask a doctor of pharmacist before use if you are taking a prescription drug When using this product you may have loose, watery, more frequent stools Stop use and ask a doctor if you have rectal bleeding or you nausea, bloating or cramping or abdominal pain gets worse. These may be signs of a serious condition. you get diarrhea you need to use a laxative for longer than 1 week If pregnant or breast-feeding, ask a health professional before use. Keep out of the reach of children.

In case of overdose, get medical help or contact a Poison Control Center right away.

All information on this site is provided “as-is” for informational purposes only and is not a substitute for medical advice or treatment. You should consult with a medical professional if you have any questions about your health. Source: FDA Structured Product Labeling.