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Medications and Drugs

GENERIC NAME: ursodiol

BRAND NAME: Actigall, Urso

DRUG CLASS AND MECHANISM: Ursodiol is a naturally-occurring bile acid that is made by the liver in humans and is secreted in small quantities in bile. It is used to dissolve and prevent cholesterol gallstones and to treat primary biliary cirrhosis, a disease of the liver. Ursodiol blocks the enzyme in the liver that produces cholesterol and thereby decreases production of cholesterol by the liver and the amount of cholesterol in bile. It also reduces the absorption of cholesterol from the intestine. By decreasing the concentration of cholesterol in bile, ursodiol prevents the formation and promotes the dissolution of cholesterol-containing gallstones. The mechanism by which it acts in primary biliary cirrhosis is not clear.

GENERIC: Yes

PRESCRIPTION: Yes

PREPARATIONS: Actigall capsules, 300 mg. Ursodiol tablets, 250 mg

STORAGE: Store at room temperature, 15-30°C (59-86°F).

PRESCRIBED FOR: Ursodiol is used to prevent cholesterol gallstones from forming during rapid loss of weight. It also is used to dissolve cholesterol gallstones that do not contain calcium and are less than 2 cm in diameter. It does not dissolve gallstones that are composed of pigment rather than cholesterol. Ursodiol must be used for one or more years, and 50% of patients who have successful dissolution of their gallstones will have the gallstones return within five years. The likelihood of having successful dissolution of gallstones is low if partial dissolution is not seen within 12 months of starting treatment. Ursodiol also is used to treat primary biliary cirrhosis.

DOSING: The recommended dose for dissolving gallstones in adults is 8-10 mg/kg/day split into 2 or 3 doses. For treating primary biliary cirrhosis, the recommended dose is 13-15 mg/kg/day split into 4 doses. Ursodiol should be taken with meals.

DRUG INTERACTIONS: Aluminum containing antacids, cholestyramine and colestipol reduce the absorption of ursodiol and therefore reduce its action.

PREGNANCY: The are no adequate studies in pregnant women.

NURSING MOTHERS: It is not known whether ursodiol is secreted in breast milk.

SIDE EFFECTS: The most common side effects are rash, itching, nausea, vomiting, stomach pain, back pain, constipation and diarrhea.

Reference: FDA Prescribing Information


Last Editorial Review: 10/20/2001 11:31:00 PM




Report Problems to the Food and Drug Administration

 

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


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Suggested Reading by Our Doctors
MedicineNet Doctors
  • Drug Interactions - Learn about potential drug interactions you may be exposed to. Drug interactions can occur with prescription drugs, OTC medication, vitamins, herbs, and supplements.
  • Gallstones - Learn about gallstones symptoms like biliary colic, constant pain in the middle of the upper abdomen, or right upper abomen accompanied by nausea. Causes and treatment information is also included.
  • Primary Biliary Cirrhosis - Learn more about Primary Biliary Cirrhosis (PBC), including a description, scope of the problem, causes, symptoms, risk factors, diagnosis, natural progression (course of disease), medications, and treatments associated with different symptoms, complications, and diseases related to PBC.

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ursodiol, Actigall, Urso

What are gallstones?

Gallstones are stones that form in the gall (bile).

  • Bile is a watery liquid made by the cells of the liver that is important for digesting food in the intestine, particularly fat.
  • Liver cells secrete the bile they make into small canals within the liver.
  • The bile flows through the canals and into larger collecting ducts within the liver (the intrahepatic bile ducts).
  • The bile then flows within the intrahepatic bile ducts out of the liver and into the extrahepatic bile ducts-first into the hepatic bile ducts, then into the common hepatic duct, and finally into the common bile duct.

From the common bile duct, there are two different directions that bile can flow.

  • The first direction is on down the common bile duct and into the intestine where the bile mixes with food and promotes digestion of food.
  • The second direction is into the cystic duc...

Read the Gallstones article »



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ursodiol, Actigall, Urso Related Articles







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