New hope for schizophrenia patients who Can't take antipsychotics?
NCT ID NCT04745143
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests a drug that boosts NMDA activity as a standalone treatment for schizophrenia. It is for people who refuse or cannot tolerate standard antipsychotics. The trial will measure changes in symptoms like hallucinations and social withdrawal in 80 participants over several weeks.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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About 80 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jan 2018
- Expected to finish
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Dec 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 65 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Have a DSM-5 (American Psychiatric Association) diagnosis of schizophrenia * Refuse or are unable to tolerate antipsychotics due to poor response or adverse effects * PANSS total score ≥ 60 * Free of antipsychotic drugs for at least 1 week * Agree to participate in the study and provide informed consent Exclusion Criteria: * Current substance abuse or history of substance dependence in the past 3 months * History of epilepsy, head trauma, stroke or other serious medical or neurological illness which may interfere with the study * Use of depot antipsychotic in the past 3 months; * Clinically significant laboratory screening tests * Pregnancy or lactation * Inability to follow protocol
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Department of Psychiatry, China Medical University Hospital
RECRUITINGTaichung, Taiwan
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- New drug candidate takes aim at schizophrenia symptoms
- New schizophrenia drug goes Head-to-Head with standard antipsychotics in Long-Term trial
- Five-Year safety check for experimental schizophrenia drug