Clinical Trial

Clozapine Dosing in Schizophrenia

Study Description

Switching From Twice-Daily to Once-Daily Clozapine Dosing in Schizophrenia

Plasma half-life has routinely been used to establish the dosing schedule of antipsychotics; for example, it is recommended that agents with a short plasma half-life be administered multiple times per day. However, to date, several randomized controlled trials (RCTs) have shown no differences in clinical outcomes between once- and twice-daily dosing of various antipsychotics, suggesting that once-daily dosing of antipsychotics is a viable option regardless of plasma half-life. This would apply to clozapine as well; however, there have been no studies comparing once-daily vs. twice-daily dosing regimens of clozapine in terms of efficacy and tolerability. To address this gap in the literature, the investigators shall conduct a pilot, double-blind, RCT to examine efficacy and tolerability following a switch to once-daily dosing regimen of clozapine in patients with schizophrenia receiving clozapine twice a day.


Locations Selected Location


Pharmaceutical medication involved Pharmaceutical medication involved
Recruiting patients only Recruiting patients only

Drug - Clozapine

Switching from twice-daily to once-daily clozapine dosing regimen

Additional Information

Official Study Title

Switching From Twice-Daily to Once-Daily Clozapine Dosing in Schizophrenia: A Pilot, Double-Blind, Randomized Controlled Trial

Clinical Trial ID


ParticipAid ID