MiraLAX ® Drug Facts

Active ingredient (in each dose)

Polyethylene Glycol 3350, 17 g (cap filled to line)


Osmotic Laxative

  • Relieves occasional constipation (irregularity)
  • Generally produces a bowel movement in 1 to 3 days

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 or 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 your nausea, bloating, 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 reach of children. In case of overdose, get medical help or contact a Poison Control Center right away.

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:
    • 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
    • use once a day
    • use no more than 7 days
Children 16 years of age or under: ask a doctor.
Other information
  • Store at 20°-25°C (68°-77°F)
  • Tamper-evident: do not use if foil seal under cap, printed with "SEALED for YOUR PROTECTION" is missing, open or broken
Inactive ingredients
  • None
Questions or comments?
  • 1-800-MiraLAX (1-800-647-2529)
The #1 GI recommended laxative [2] Use as directed for occasional constipation.