What is the initial LAI dose for CrCl 50-80?

What is the initial LAI dose for CrCl 50-80?

• A. 0.25 mg BID
• B. 0.5 mg BID
• C. 1 mg BID
• D. 0.5 mg QD

Answer: (B)

Moderate renal impairment (CrCl 50–80) slows how the drug is cleared, so less of it leaves the body each day. To avoid too high exposure and potential adverse effects, the starting dose is reduced roughly by half. That makes 0.5 mg twice daily the best choice because it yields about the same total daily exposure as the standard starting dose would in people with normal renal function, but adjusted for slower clearance. A smaller dose (0.25 mg BID) would likely be subtherapeutic; a higher dose (1 mg BID) could lead to excessive levels; and 0.5 mg once daily would provide less daily exposure than the half-dose regimen.

Moderate renal impairment (CrCl 50–80) slows how the drug is cleared, so less of it leaves the body each day. To avoid too high exposure and potential adverse effects, the starting dose is reduced roughly by half. That makes 0.5 mg twice daily the best choice because it yields about the same total daily exposure as the standard starting dose would in people with normal renal function, but adjusted for slower clearance. A smaller dose (0.25 mg BID) would likely be subtherapeutic; a higher dose (1 mg BID) could lead to excessive levels; and 0.5 mg once daily would provide less daily exposure than the half-dose regimen.