Miralax Allergic Reaction: Symptoms, Causes & What to Do

Signs of an Allergic Reaction to Miralax (Polyethylene Glycol 3350)

Allergic reactions are rare but can occur. Seek immediate medical attention if you experience any of the following:

Skin Reactions

  • Hives
  • Rash
  • Itching
  • Swelling of the face, lips, tongue, throat, or other areas

Respiratory Symptoms

  • Shortness of breath
  • Wheezing
  • Coughing

Gastrointestinal Symptoms

  • Nausea
  • Vomiting
  • Diarrhea

Other Systemic Signs

  • Dizziness or lightheadedness
  • Fainting
  • Anaphylaxis – a severe, life‑threatening reaction requiring emergency care

If you suspect an allergy, stop taking Miralax and contact a healthcare professional immediately.

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