Cholestyramine is used to lower high cholesterol levels in the blood and prevent it from clogging the blood vessels. This drug also removes itchiness caused by bile acid build-up in the gall bladder. It may come in powder or tablet form.

This drug is indicated to treat high cholesterol levels and bile acid build-up. This medication may also be used in other conditions to be determined by your doctor.

Avoid taking this drug if you have stomach or intestine blockage. Wait at least 4 to 6 hours after taking cholestyramine before you take any other medications.

Common side effects of Cholestyramine may include:

  • Mild Constipation
  • Diarrhea
  • Stomach Pain
  • Nausea
  • Loss of Appetite
  • Bloating or Gas
  • Irritation of your Tongue
  • Itching or Irritation around your Rectal Area

Notify your doctor promptly if any of these symptoms persist or worsen. Seek immediate medical attention if you experience severe allergic reaction after taking this drug. Symptoms include hives, trouble breathing and swelling of the face, lips or tongue.


Before taking this drug, tell your doctor or pharmacist:

  • If you are allergic to it or if you have any other allergies.
  • If you are pregnant or breastfeeding.
  • If you are to undergo any surgical procedure.
  • If you are taking herbal, prescription and non-prescription drugs.
  • If you have certain medical conditions such as:
    • Chronic Constipation
    • Thyroid Disorder
    • Diabetes
    • Kidney Disease
    • Liver Disease
    • Coronary Artery Disease (Clogged Arteries)
    • Phenylketonuria (PKU)



Drug interactions may either lessen the effectiveness of this drug or heighten the risk for severe side effects. It’s important to inform your doctor all the medication including prescription and non-prescription and herbal medicines you are taking or going to take.

Possible interactions with this drug are:

  • Warfarin
  • Thiazide diuretics
  • Propranolol
  • Tetracycline
  • Penicillin G
  • Phenobarbital
  • Thyroid Medicines
  • Estrogens and Progestins
  • Digoxin
  • Oral Phosphate Supplements
  • Vitamin K products or Phytonadione
  • Ursodiol
  • Ezetimibe

Call emergency hotline if someone has overdosed and has serious symptoms such as passing out or trouble breathing.

Available brand/s:

  • Colestyramine

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