Switching From Twice-Daily to Once-Daily Clozapine Dosing in Schizophrenia (NCT02639702)
Switching From Twice-Daily to Once-Daily Clozapine Dosing in Schizophrenia: A Pilot, Double-Blind, Randomized Controlled Trial
🩺 Plain-English Summary (8th-Grade Level)
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.
Who can join: Review the eligibility criteria below.
Location: Centre for Addiction and Mental Health — Toronto, Ontario
Age range: 18 Years
🧪 Interventions in This Study
📋 "Do I Qualify?" — 1-Minute Self Screener
Instant ChecklistFull eligibility criteria are available on the official NIH protocol. View the criteria ↗
📍 All Participating Trial Locations (1 Sites)
- Centre for Addiction and Mental Health — Toronto, Ontario
📞 Contact the Study Coordinator
Phone: (416) 535-8501
Email: Gary.Remington@camh.ca
Coordinator details come directly from the registered NIH protocol. Confirm the study is still recruiting before traveling.
💰 Cost, Insurance & Patient Rights
- 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
- Routine Patient Care: Under federal law (ACA § 2709) and many state statutes, routine care costs are covered during participation.
- Voluntary Participation: You may withdraw at any time without affecting your standard medical care.
More studies in Schizophrenia
- Young Adults With Violent Behavior During Early Psychosis (Aim 2) — New York, New York
- Does tDCS Change Synaptic Density in the Brains of Patients With Schizophrenia — Toronto, Ontario
- Ketogenic Diet in People With Schizophrenia — Catonsville, Maryland
- Paired Associative Stimulation in the Dorsolateral Prefrontal Cortex in Patients With Schizophrenia — Toronto, Ontario
- Investigating the Muscarinic System in Schizophrenia Using Positron Emission Tomography — Toronto, Ontario
- Long-Term Real-World Safety of Cobenfy in Adults With Schizophrenia — Suwanee, Georgia
Explore by condition: All Schizophrenia clinical trials
💡 How to Participate
- Check the checklist above to see if you may qualify.
- Contact the study coordinator using the phone/email above.
- Ask about the visit schedule, what is covered at no cost, and any travel support.
- Confirm with your own doctor before making a decision.