Alternative names
Cholestasis - drug-induced

Definition

Drug-induced cholestasis is the blockage of the flow of bile from the liver caused by medication.

Causes, incidence, and risk factors

Bile is produced in the liver, moved to the gallbladder and excreted into the gut through the biliary tract, to aid in the digestion of fats. Flow from the liver to the gallbladder and ultimately to the gut can be slowed or stopped by certain drugs. When the flow of bile is inhibited, an individual may become jaundiced (yellow coloration to the eyes and skin). Drugs which cause cholestasis (absence of flow of bile) may damage the liver.

Many drugs can cause cholestasis. Some more common culprits include: gold salts, nitrofurantoin, anabolic steroids, oral contraceptives, chlorpromazine, prochlorperazine, sulindac, cimetidine, erythromycin, tobutamide, imipramine, ampicillin and other penicillin-based antibiotics. This list is not comprehensive, as other medications can also unexpectedly cause cholestasis in some individuals.

Symptoms

 
• Itching  
• Jaundiced (yellow) skin or eyes  
• Very dark urine  
• Very pale stools  
• Fever or rash from drug sensitivity  
• Right upper quadrant abdominal pain  
• Nausea  
• Vomiting

Signs and tests

Elevated bilirubin and alkaline phosphatase.

Treatment

If medication is causing the cholestasis, the physician would probably discontinue the drug or look for an alternative. DO NOT stop taking medications on your own without consulting a physician! No medical treatment exists to reverse cholestasis.

Expectations (prognosis)

Most patients recover, but severe cases may lead to liver failure. Drug-induced cholestasis usually reverses after discontinuation of the medication or drug, although it may take many months for cholestasis to resolve.

Complications

 
• Severe itching  
• Diarrhea  
• Poor absorption of fat and fat-soluble vitamins

Calling your health care provider

Call your health care provider if you have persistent itching or notice that your skin or eyes are yellow.

Medical Encyclopedia

All ArmMed Media material is provided for information only and is neither advice nor a substitute for proper medical care. Consult a qualified healthcare professional who understands your particular history for individual concerns.