MiraLAX Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
MiraLAX (polyethylene glycol 3350) is used as a laxative to treat occasional constipation or irregular bowel movements. MiraLAX is available over-the-counter and in generic form. Common side effects of MiraLAX include nausea, abdominal cramping, bloating, upset stomach, gas, dizziness, or sweating.
The usual dose of MiraLAX is 17 grams (about 1 heaping tablespoon) of powder per day (or as directed by physician) in 4 to 8 ounces of water. Other drugs may interact with MiraLAX. Tell your doctor all prescription and over-the-counter medications and supplements you use. During pregnancy, MiraLAX should be used only when prescribed. It is not known if this drug passes into breast milk. Consult your doctor before breast-feeding.
Our MiraLAX (polyethylene glycol 3350) 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 Patient Information in Detail?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
MiraLAX in Detail - Patient Information: Side Effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop taking polyethylene glycol 3350 and call your doctor at once if you have any of these serious side effects:
- severe or bloody diarrhea;
- bleeding from your rectum;
- blood in your stools; or
- severe and worsening stomach pain, cramping, or bloating.
Less serious side effects may include:
- bloating, gas, upset stomach;
- dizziness; or
- increased sweating.
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
Read the entire detailed patient monograph for MiraLAX (Polyethylene Glycol 3350 - OTC)
What is Patient Information Overview?
A concise overview of the drug for the patient or caregiver from First DataBank.
MiraLAX Overview - Patient Information: Side Effects
If your doctor has directed you to use this medication, remember that he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Inform your doctor immediately if you have excessive number of bowel movements, persistent diarrhea, severe or persistent stomach/abdominal pain, bloody stools, or rectal bleeding while using this medication.
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the entire patient information overview for MiraLAX (Polyethylene Glycol 3350 - OTC)
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
MiraLAX FDA Prescribing Information: Side Effects
Nausea, abdominal bloating, cramping and flatulence may occur. High doses may produce diarrhea and excessive stool frequency, particularly in elderly nursing home patients. Patients taking other medications containing polyethylene glycol have occasionally developed urticaria suggestive of an allergic reaction.
Read the entire FDA prescribing information for MiraLAX (Polyethylene Glycol 3350 - OTC)
Additional MiraLAX Information
MiraLAX - User Reviews
MiraLAX User Reviews
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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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