Oral, Adults: Administer with or without food.
20 mg 3 times daily administered 4 to 6 hours apart; may increase to a maximum of 80 mg 3 times daily in patients who do not achieve an adequate response.
Elderly >65 years: Use with caution.
Dosage adjustment in renal impairment: No dosage adjustment necessary.
Dosage adjustment in hepatic impairment: Child-Pugh class A and B: No dosage adjustment necessary; has not been studied in severe impairment (Child-Pugh class C).
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