Constipation Home > GlycoLax Side Effects

Stomach pain and cramping, bloating, and diarrhea are some of the possible side effects of GlycoLax. Although most problems typically do not require medical attention, you should contact your healthcare provider immediately if you experience difficulty breathing, rectal bleeding, or an unexplained rash. Although GlycoLax is no longer manufactured, generic versions are available.

An Introduction to GlycoLax Side Effects

Just like any medicine, GlycoLax™ (polyethylene glycol 3350) can cause side effects. However, not everyone who uses the laxative will have problems. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or are treated easily by you or your healthcare provider.
(This article covers many, but not all, of the possible side effects with GlycoLax. Your healthcare provider can discuss a more complete list with you. GlycoLax is no longer manufactured, although several different generic forms are still available.)

Common Side Effects of GlycoLax

The prescribing information for prescription medications contains the exact percentage of side effects that occurred during clinical trials. However, information for over-the-counter (OTC) medications, such as GlycoLax, is less inclusive. Therefore, it can be difficult to know exactly what side effects occur and how common the reactions may be.
Some generic versions of polyethylene glycol 3350 (PEG-3350), the active ingredient in GlycoLax, are available without a prescription. The prescribing information for these products contains some information about potential side effects. Because the active ingredient and dosage amount are the same for the prescription and over-the-counter PEG-3350 products, possible side effects should also be the same.
Based on prescription PEG-3350 information, possible side effects of GlycoLax may include:
  • Nausea
  • Abdominal (stomach) bloating
  • Cramping
  • Gas
  • Diarrhea
  • Frequent stools.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
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