July 28, 2016
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NuLytely Side Effects Center

Medical Editor: John P. Cunha, DO, FACOEP

Last reviewed on RxList 5/26/2016

NuLytely (polyethylene glycol 3350, sodium chloride, sodium bicarbonate and potassium chloride) for Oral Solution is a combination a laxative and electrolytes used for bowel cleansing prior to colonoscopy and barium enema X-ray examination in adults. NuLytely is available in generic form. Common side effects of NuLytely include:

  • nausea
  • abdominal or stomach fullness
  • bloating
  • abdominal cramps
  • vomiting
  • anal/rectal irritation, and
  • rarely, allergic reactions (hives, runny nose, skin rash and itching)

The dose of NuLytely for adults is given at a rate of 240 mL (8 oz.) every 10 minutes, until the rectal effluent is clear or 4 liters are consumed. NuLytely may interact with laxatives, and may affect the absorption of other drugs. Tell your doctor all medications and supplements you use. During pregnancy, NuLytely should be taken only if prescribed. It is unknown if this drug passes into breast milk. Consult your doctor before breastfeeding.

Our NuLytely (polyethylene glycol 3350, sodium chloride, sodium bicarbonate and potassium chloride) for Oral Solution Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What is Prescribing information?

The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.

NuLytely FDA Prescribing Information: Side Effects
(Adverse Reactions)


The following adverse reactions have been identified during post-approval use of NuLYTELY. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.

Nausea, abdominal fullness and bloating are the most common adverse reactions (occurred in up to 50% of patients) to administration of NuLYTELY. Abdominal cramps, vomiting and anal irritation occur less frequently. These adverse reactions are transient and usually subside rapidly. Isolated cases of urticaria, rhinorrhea, dermatitis and (rarely) anaphylactic reaction have been reported which may represent allergic reactions.

Published literature contains isolated reports of serious adverse reactions following the administration of PEG-electrolyte solution products in patients over 60 years of age. These adverse events include upper GI bleeding from Mallory-Weiss Tear, esophageal perforation, asystole, sudden dyspnea with pulmonary edema, and “butterfly-like” infiltrates on chest X-ray after vomiting and aspirating PEG.

Read the entire FDA prescribing information for NuLytely (Polyethylene Glycol 3350, Sodium Chloride, Sodium Bicarbonate and Potassium Chloride for Oral Solution)

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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