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Generic Name: Polyethylene glycol 3350 [pol-ee-ETH-il-een-GLYE-kol]
Names of Brands: ClearLax, GaviLAX, HealthyLax, MiraLax, Natura-Lax,… show the 9 names.
Drug Class: laxatives

What is PEG3350?

PEG3350 is a solution for laxatives that boosts the amount of water that is present in the intestinal tract, thereby stimulating stool movements.

PEG3350 is an effective laxative to treat constipation or irregular diurnal movement.PEG3350 is also used for reasons not mentioned in this guideline.

Side effects of PEG3350

See a doctor immediately. If you are experiencing symptoms that are warning signs of an allergic response, such as hives, difficulty breathing, and swelling of your lips, tongue, throat, or face,

Stop taking the medication and call your doctor right away if you are suffering from:

  • Bloody or severe diarrhea that is bloody or severe;
  • Bleeding in the rectal area;
  • The blood in your stool;
  • Chronic and worsening stomach pain.

Common negative side effects of PEG3350 could include:

  • Bloating, gas, upset stomach;
  • Dizziness;
  • An increase in sweating.

This isn't a complete list of all the side effects. Other side effects could occur. Consult your physician to seek medical advice on the effects. You can report any side effects to the FDA at 1-800-FDA-1088.


It is not recommended to use this medication if you suffer from constipation or obstruction of the intestinal tract. If you suffer from one of these conditions, you may suffer serious or even life-threatening effects from PEG3350.

Do not take PEG3350 more than once a day. Contact your physician if you have any issues with constipation or irregularity after taking this medication for seven consecutive days.

Before you take this drug

Do not take PEG3350 if you have an allergy to polyethylene glycol or if you suffer from digestive obstruction or blockage. If you suffer from any or all of the above conditions, then you may suffer serious or even life-threatening side effects from PEG3350.

Anyone suffering from or who suffer from an eating disorder (such as bulimia or orexia) shouldn't make use of this medicine without the advice by a physician.

To ensure this medicine is suitable for you, inform your physician if you suffer from:

  • Nausea, vomiting, or severe stomach pain;
  • Ulcerative colitis;
  • Irritable bowel syndrome
  • Kidney disease kidney disease
  • If you've had an unexpected change in your stool habits that lasts two weeks or more,

FDA pregnancy category C. It isn't known whether PEG3350 can cause harm to an unborn baby. Inform your doctor whether you are pregnant or plan to become pregnant while taking this medication.

It is unclear if polyethylene glycol 3350 is absorbed into breast milk or whether it is harmful to the baby who is nursing. Consult your physician if you are nursing your baby.

How to take PEG3350?

Follow the directions on the prescription label. Don't use this medication in greater or lesser amounts or for a longer time than prescribed.

If you are using the powder version of this medication, take the dose using the cap that is on the bottle. The cap should have marks for dose on the inside of it. Mix the powder in 4–8 ounces of the hot liquid, such as soda, juice, water, coffee, tea, or coffee. Mix the mixture well and drink it immediately. Do not save the drink for future use.PEG3350 is expected to cause the bowel to move within 1 to 3 days after taking the drug. The medication usually produces loose or watery stools.

Do not take PEG3350 more than once per day. Contact your physician if you have any issues with constipation or irregularity after taking this medicine for seven consecutive days.Maintain room temperature and clear of moisture and heat.

What happens If I miss a dose?

Do the dose you missed as quickly as you can remember. Do not take your missed dose if it's close to the time of your next dose. Do not take a second dose to make up for the missed dose.

What happens if I overdose?

Get medical attention in an emergency or contact the Poison Help line toll-free at 1-800-222-1222.

What should be avoided?

Follow the instructions of your physician regarding any restrictions on your food, drink, or activities.

Interaction with other drugs

Other drugs can be incompatible with polyethylene glycol 3350, such as prescription and non-prescription drugs, vitamins, and herbal products. Be sure to inform your health professionals about any medications you take currently and any medicines you stop or start using.