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Prevalite (Cholestyramine) - Side Effects and Adverse Reactions



The most common adverse reaction is constipation. When used as a cholesterol-lowering agent, predisposing factors for most complaints of constipation are high dose and increased age (more than 60 years old). Most instances of constipation are mild, transient, and controlled with conventional therapy. Some patients require a temporary decrease in dosage or discontinuation of therapy.

Less Frequent Adverse Reactions: Abdominal discomfort and/or pain, flatulence, nausea, vomiting, diarrhea, dyspepsia, eructation, anorexia, steatorrhea, bleeding tendencies due to hypoprothrombinemia (Vitamin K deficiency) as well as Vitamin A (one case of night blindness reported) and D deficiencies, hyperchloremic acidosis in children, osteoporosis, rash and irritation of the skin, tongue and perianal area. Rare reports of intestinal obstruction, including two deaths, have been reported in pediatric patients.

Occasional calcified material has been observed in the biliary tree, including calcification of the gallbladder, in patients to whom cholestyramine resin has been given. However, this may be a manifestation of the liver disease and not drug-related.

One patient experienced biliary colic on each of three occasions on which he took a cholestyramine for oral suspension product. One patient diagnosed as acute abdominal symptom complex was found to have a “pasty mass” in the transverse colon on x-ray.

Other events (not necessarily drug-related) reported in patients taking cholestyramine resin include:

  •  Gastrointestinal—GI-rectal bleeding, black stools, hemorrhoidal bleeding, bleeding from known duodenal ulcer, dysphagia, hiccups, ulcer attack, sour taste, pancreatitis, rectal pain, diverticulitis.
  •  Laboratory test changes—Liver function abnormalities.
  •  Hematologic—Prolonged prothrombin time, ecchymosis, anemia.
  •  Hypersensitivity—Urticaria, asthma, wheezing, shortness of breath.
  •  Musculoskeletal—Backache, muscle and joint pains, arthritis.
  •  Neurologic—Headache, anxiety, vertigo, dizziness, fatigue, tinnitus, syncope, drowsiness, femoral nerve pain, paresthesia.
  •  Eye—Uveitis.
  •  Renal—Hematuria, dysuria, burnt odor to urine, diuresis.
  •  Miscellaneous—Weight loss, weight gain, increased libido, swollen glands, edema, dental bleeding, dental caries, erosion of tooth enamel, tooth discoloration.


Below is a sample of reports where side effects / adverse reactions may be related to Prevalite. The information is not vetted and should not be considered as verified clinical evidence.

Possible Prevalite side effects / adverse reactions in 86 year old female

Reported by a pharmacist from United States on 2012-07-05

Patient: 86 year old female

Reactions: Dysstasia, Pain in Extremity, Loss of Control of Legs, Hypoaesthesia, Fall, Muscle Spasms

Adverse event resulted in: hospitalization

Suspect drug(s):

Other drugs received by patient: Diphenoxylate/atrop; Omeprazole; Clonazepam; Synthroid; Aggrenox; Cymbalta; Atenolol; Singulair

See index of all Prevalite side effect reports >>

Drug label data at the top of this Page last updated: 2012-08-31

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