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GlycoLax

Generic name: polyethylene glycol 3350

Brand names: ClearLax, GaviLAX, HealthyLax, MiraLax, Natura-Lax, PEG3350, SunMark ClearLax, Gialax, GlycoLax

Used for constipation
Last updated November 2, 2026 0 views
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What is GlycoLax?

GlycoLax is a laxative solution that adds more water to the intestinal tract to help stimulate bowel movements.

GlycoLax is used as a laxative to treat occasional constipation or irregular bowel movements.

GlycoLax may also be used for reasons not mentioned in this medication guide.

This section was rewritten for readability and reviewed for meaning.

How should I take GlycoLax?

Follow all directions on your prescription label. Do not use this medicine in larger or smaller amounts or for longer than recommended.

To use the powder form of this medicine, measure your dose with the medicine cap on the bottle. This cap should have dose marks on the inside of it. Pour the powder into 4 to 8 ounces of a cold or hot beverage such as water, juice, soda, coffee, or tea. Stir this mixture and drink it right away. Do not save for later use.

GlycoLax should produce a bowel movement within 1 to 3 days of using the medication. This medicine normally causes loose or even watery stools.

Do not use GlycoLax more than once per day. Call your doctor if you are still constipated or irregular after using this medication for 7 days in a row.

Store at room temperature away from moisture and heat.

This section was rewritten for readability and reviewed for meaning.

Warnings

You should not use this medicine if you have a bowel obstruction or intestinal blockage. If you have any of these conditions, you could experience dangerous or life-threatening side effects from GlycoLax.

Do not use GlycoLax more than once per day. Call your doctor if you are still constipated or have irregular bowel movements after using this medication for 7 days in a row.

This section was rewritten for readability and reviewed for meaning.

Before taking this medicine

You should not use GlycoLax if you are allergic to polyethylene glycol, or if you have a bowel obstruction or intestinal blockage. If you have any of these conditions, you could experience dangerous or life-threatening side effects from GlycoLax.

People with eating disorders (such as anorexia or bulimia) should not use this medication without a doctor's advice.

To ensure this medicine is safe for you, tell your doctor if you have:

  • nausea, vomiting, or severe stomach pain;
  • ulcerative colitis;
  • irritable bowel syndrome;
  • kidney disease; or
  • if you have had a sudden change in bowel habits that has lasted 2 weeks or longer.

FDA pregnancy category C. It is not known whether GlycoLax will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication.

It is not known whether polyethylene glycol 3350 passes into breast milk or if it could harm a nursing baby. Tell your doctor if you are breast-feeding a baby.

This section was rewritten for readability and reviewed for meaning.

GlycoLax side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop taking GlycoLax and call your doctor right away if you have:

  • severe or bloody diarrhea;
  • rectal bleeding;
  • blood in your stools; or
  • severe and worsening stomach pain.

Common side effects of GlycoLax may include:

  • bloating, gas, upset stomach;
  • dizziness; or
  • increased sweating.

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.

This section was rewritten for readability and reviewed for meaning.

What happens if I miss a dose?

Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose. Do not take extra medicine to make up for the missed dose.

This section was rewritten for readability and reviewed for meaning.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

  • Follow your doctor's instructions about any restrictions on food, beverages, or activity.

This section was rewritten for readability and reviewed for meaning.

What other drugs will affect GlycoLax?

Other medicines may interact with polyethylene glycol 3350, including both prescription and over-the-counter drugs, vitamins, and herbal products. Inform all of your health care providers about every medicine you are currently using and any medicine you begin or discontinue.

This section was rewritten for readability and reviewed for meaning.

Common questions about GlycoLax

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Related medicines

Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
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Content is provided for education and is not medical advice. See our medical disclaimer.