New pill aims to calm schizophrenia symptoms fast
NCT ID NCT05278156
First seen Jun 26, 2026 · Last updated Jun 26, 2026
Summary
This study tested a new drug called CPL500036 in 189 people having a sudden worsening of schizophrenia symptoms. Participants took either a low dose, high dose, or placebo for 28 days. The main goal was to see if the drug reduces symptoms like hallucinations and delusions better than a placebo.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- CPL500036 (PDE10A inhibitor)
- What this could lead to
- If it works, this could point toward a new treatment option for acute schizophrenia symptoms.
- What could go wrong
- This is an early Phase 2 trial with only 189 people, so results may not apply broadly. The drug may not work better than placebo.
This is an AI summary of the original study and may miss details. Read our disclaimer.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Bács-Kiskun County Teaching Hospital Kalocsa Holy Cross Hospital
Kalocsa, H-6300, Hungary
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Communal non- commercial enterprise of Lviv Regional Council "Lviv Regional Clinical Psychiatric Hospital",
Lviv, 79021, Ukraine
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Communal non-commercial enterprise of the Kyiv Regional Council "Regional Psychiatric-Narcological Medical Association", women's department No. 2, men's department No. 10.
Kyiv, 08631, Ukraine
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Communal non-commercial enterprise of the Lviv Regional Council "Lviv Regional Clinical Psychoneurological Dispensary",
Lviv, 79017, Ukraine
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Communal non-profit enterprise "Clinical Hospital "PSYCHIATRY"" of the executive body of the Kyiv City Council (Kyiv City State Administration), Center for Primary Psychotic Episode and Modern Treatment Methods.
Kyiv, 04080, Ukraine
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Department of Psychiatry and Psychotheraapy of Semmelweis University
Budapest, H-1083, Hungary
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Department of Psychiatry, Mental hygiene and Addictology of Petz Aladár County Teaching Hospital
Győr, H-9024, Hungary
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Ivano-Frankivsk National Medical University, Department of Psychiatry, Narcology and Medical Psychology
Ivano-Frankivsk, 76014, Ukraine
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Psychiatry Department of Tolna County Balassa Janos Hospital
Szekszárd, H-7100, Hungary
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Samodzielny Publiczny Psychiatryczny Zakład Opieki Zdrowotnej
Choroszcz, 16-070, Poland
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Semmelweis University, Faculty of Medicine, Department of Psychiatry and Psychotherapy
Budapest, H-1085, Hungary
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Ternopil National Medical University named after I.Y. Gorbachevskiy of the Ministry of Health of Ukraine, Department of Psychiatry, Narcology and Medical Psychology
Ternopil, 46001, Ukraine
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Uniwersytecki Szpital Kliniczny
Bialystok, 15-272, Poland
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Vinnytsia National Medical University named after M.I. Pirogov, Department of Psychiatry, Narcology and Psychotherapy with a course of postgraduate education
Vinnytsia, 21018, Ukraine
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Wojewódzki Szpital dla Nerwowo i Psychicznie Chorych
Bolesławiec, 59-700, Poland
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Wojewódzki Szpital dla Psychicznie i Nerwowo Chorych
Gmina Świecie, 86-100, Poland
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