PREPARATIONS: Capsules: 300 mg. Tablets: 250 and 500 mg
STORAGE: Ursodiol should be stored at room temperature, 15 C - 30 C (59 F - 86 F).
DOSING: The recommended dose for dissolving gallstones in adults is 8-10 mg/kg/day split into two or three doses (every 8 or 12 hours). Each dose should not exceed 300 mg. The maintenance dose is 250 mg at bedtime for six months.
For treating primary biliary cirrhosis, the recommended dose is 13-15 mg/kg/day split into 2 to 4 doses. Ursodiol should be taken with meals.
DRUG INTERACTIONS: Aluminum containing antacids, cholestyramine (Questran, Questran Light) and colestipol (Colestid) reduce the absorption of ursodiol and therefore reduce its action. Estrogens, oral contraceptives, clofibrate, and potentially other cholesterol reducing drugs may counteract the effects of ursodiol by increasing cholesterol secretion by the liver and the risk for gallstone formation.
PREGNANCY: The are no adequate studies in pregnant women.
NURSING MOTHERS: It is not known whether ursodiol is secreted in breast milk.
Medically reviewed by Eni Williams, PharmD
Reference: FDA Prescribing Information
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