Cholestyramine (With Sugar)

Medically Reviewed by Dr. Harshi Dhingra, M.D.

Last Reviewed: Jun 02, 2025

Side Effects


Cholestyramine (Questran) Side Effects

Possible side effects of cholestyramine are listed below. Call your doctor for medical advice if these side effects are severe or persistent.

  • Constipation
  • Stomach pain
  • Bloating
  • Gas
  • Upset stomach
  • Indigestion
  • Diarrhea
  • Vomiting
  • Heartburn
  • Loss of appetite

Rarely, cholestyramine can cause more serious side effects. Call your healthcare professional right away or seek emergency medical attention if you develop:

  • A serious allergic reaction (skin rash, hives, itching)
  • Abnormal bleeding (nosebleeds, bleeding gums, or rectal bleeding)

The above list may not include all the potential side effects of cholestyramine. Contact your health care provider if your side effects are unusual or severe or they do not get better over time. You can also report unusual side effects to the Food and Drug Administration at 1-800-FDA-1088.

Cholestyramine (Questran) Overdose: In case of an overdose of cholestyramine, call your doctor immediately. You can also call your local poison control center or the national poison control center at 1-800-222-1222. Call 911 if a person has collapsed, stopped breathing, stopped responding, or had a seizure.

Source: FDA