In severe hepatic impairment, which antipsychotic should start at 25 mg/day, increasing by 25-50 mg/day?

In severe hepatic impairment, which antipsychotic should start at 25 mg/day, increasing by 25-50 mg/day?

• A. Iloperidone
• B. Lurasidone
• C. Clozapine
• D. Asenapine

Answer: (B)

In severe hepatic impairment, drug clearance drops, so starting at a low dose and titrating slowly helps avoid excessive exposure and side effects. Lurasidone has explicit labeling that fits this approach: begin at 25 mg per day and increase by 25–50 mg per day as tolerated. This gradual uptitration accommodates reduced metabolism (CYP3A4 pathway) and aims for the usual therapeutic range while limiting risk. Other antipsychotics have more dosing challenges in liver disease—such as iloperidone, which carries orthostatic risk with titration; clozapine, which has hepatotoxicity concerns and requires careful monitoring; and asenapine, which lacks the same clear low-start, slow-titration guidance in severe hepatic impairment. Note also that lurasidone should be taken with food to ensure proper absorption.

In severe hepatic impairment, drug clearance drops, so starting at a low dose and titrating slowly helps avoid excessive exposure and side effects. Lurasidone has explicit labeling that fits this approach: begin at 25 mg per day and increase by 25–50 mg per day as tolerated. This gradual uptitration accommodates reduced metabolism (CYP3A4 pathway) and aims for the usual therapeutic range while limiting risk. Other antipsychotics have more dosing challenges in liver disease—such as iloperidone, which carries orthostatic risk with titration; clozapine, which has hepatotoxicity concerns and requires careful monitoring; and asenapine, which lacks the same clear low-start, slow-titration guidance in severe hepatic impairment. Note also that lurasidone should be taken with food to ensure proper absorption.