Incidence and Severity of Neuropsychiatric Adverse Events of Efavirenz Given as a Stepped Dosage vs. the Usual Dosage

Summary

Background: Neuropsychiatric side effects (NPSEs) occur in a significant proportion of subjects after initiation of efavirenz (EFV) and may limit its use in certain patients. Objectives: To evaluate the incidence and severity of NPSEs and antiviral efficacy of EFV given as a stepped dosage over 2 weeks versus the usual dosage. Methods: Randomized, double blind, multicentric clinical trial in which a progressive dosage (arm A: 200 mg qd for 6 days, 400 mg qd for 7 days and 600 mg qd from day 14 forward) was compared with conventional administration (arm B: 600 mg qd from the first day). All patients received additional treatment with 2 NRTIs. The incidence and intensity of NPSEs and sleep disorders were assessed using a Likert-type scale specifically designed. Efficacy was assessed by percent of virological failures.

Timeline

Start

2006-04

Primary completion

2008-01

Completion

2008-01

Publications

• Gutierrez-Valencia A, Viciana P, Palacios R, Ruiz-Valderas R, Lozano F, Terron A, Rivero A, Lopez-Cortes LF; Sociedad Andaluza de Enfermedades Infecciosas. Stepped-dose versus full-dose efavirenz for HIV infection and neuropsychiatric adverse events: a randomized trial. Ann Intern Med. 2009 Aug 4;151(3):149-56. doi: 10.7326/0003-4819-151-3-200908040-00127. Epub 2009 Jul 6.

Drugs

Indications