polyethylene glycol 3350

Medically Reviewed on 3/2/2023

Generic Name: polyethylene glycol 3350

Brand Names: Miralax, Glycolax

Drug Class: Laxatives, Osmotic, Bowel Preps

What is polyethylene glycol, and what is it used for?

Polyethylene glycol is an osmotic laxative. Polyethylene glycol works by retaining water in the stool, resulting in softer stools and more frequent bowel movements. Polyethylene glycol does not affect glucose and electrolytes in the body.

What are the side effects of polyethylene glycol?

Side effects of polyethylene glycol are

People with kidney disease should consult with their doctor before using this product.

What is the dosage for polyethylene glycol?

Adults and children 17 years of age and older

  • For constipation stir and dissolve one packet or scoopful of powder (17 grams) in any 4 to 8 ounces of water then drink once a day.
  • Use no more than 7 days.

Safe and effective use of polyethylene glycol is not established for children under 16 years of age.

Which drugs interact with polyethylene glycol?


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Pregnancy and breastfeeding

It is not known whether polyethylene glycol enters the breast milk or if it is safe to use during pregnancy.

What else should I know about polyethylene glycol?

What preparations of polyethylene glycol (peg) 3350-oral are available?
  • Powder for a solution, supplied in packets and jars: 17 g per scoopful or packet
How should I keep polyethylene glycol (peg) 3350-oral stored?
  • Store polyethylene glycol packets and jars between temperatures of 20 C and 25 C (68 F and 77 F).


Polyethylene glycol 3350 is a drug used to treat occasional constipation and for bowel preparation prior to procedures. Side effects of polyethylene glycol are diarrhea, nausea, stomach cramps, and flatulence. People with kidney disease should consult with their doctor before using this product. Consult your doctor before taking if pregnant or breastfeeding.

Treatment & Diagnosis

Medications & Supplements

Prevention & Wellness


You are constipated if you don't have a bowel movement every day. See Answer

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Medically Reviewed on 3/2/2023
NIH.gov. POLYETHYLENE GLYCOL (3350)- polyethylene glycol 3500 powder, for solution.