polyethylene glycol 3350

  • Pharmacy Author:
    Omudhome Ogbru, PharmD

    Dr. Ogbru received his Doctorate in Pharmacy from the University of the Pacific School of Pharmacy in 1995. He completed a Pharmacy Practice Residency at the University of Arizona/University Medical Center in 1996. He was a Professor of Pharmacy Practice and a Regional Clerkship Coordinator for the University of the Pacific School of Pharmacy from 1996-99.

  • Medical and Pharmacy Editor: Jerry R. Balentine, DO, FACEP
    Jerry R. Balentine, DO, FACEP

    Jerry R. Balentine, DO, FACEP

    Dr. Balentine received his undergraduate degree from McDaniel College in Westminster, Maryland. He attended medical school at the Philadelphia College of Osteopathic Medicine graduating in1983. He completed his internship at St. Joseph's Hospital in Philadelphia and his Emergency Medicine residency at Lincoln Medical and Mental Health Center in the Bronx, where he served as chief resident.

What is polyethylene glycol (peg) 3350-oral, and how does it work (mechanism of action)?

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 brand names are available for polyethylene glycol (peg) 3350-oral?

Miralax, Glycolax

Is polyethylene glycol (peg) 3350-oral available as a generic drug?


Do I need a prescription for polyethylene glycol (peg) 3350-oral?


What are the side effects of polyethylene glycol (peg) 3350-oral?

Side effects of polyethylene glycol are diarrhea, nausea, stomach cramps, and flatulence. Patients with have kidney disease should consult with their doctor before using this product.

What is the dosage for polyethylene glycol (peg) 3350-oral?

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 or supplements interact with polyethylene glycol (peg) 3350-oral?

No drug interactions have been established with polyethylene glycol.

Is polyethylene glycol (peg) 3350-oral safe to take if I'm pregnant or breastfeeding?

It is not known whether polyethylene glycol enters the breast milk.

What else should I know about polyethylene glycol (peg) 3350-oral?

What preparations of polyethylene glycol (peg) 3350-oral are available?

Powder for 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 (Miralax, Glycolax) is a drug used to treat occasional constipation and for bowel preparation prior to procedures. Side effects, drug interactions, dosing, storage, and pregnancy and breastfeeding information should be reviewed prior to using this medications.

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REFERENCE: NIH.gov. POLYETHYLENE GLYCOL (3350)- polyethylene glycol 3500 powder, for solution.