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The effect of memantine on symptoms of schizophrenia

The effect of memantine on positive, negative, and cognitive symptoms in patients with schizophrenia.

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
IRCT
Registry ID
IRCT20250226064863N1
Enrollment
38
Registered
2025-03-28
Start date
2025-03-10
Completion date
Unknown
Last updated
2025-07-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Schizophrenia. Schizophrenia, unspecified

Interventions

Intervention 1: Intervention group: Patients who receive memantine in addition to standard schizophrenia treatment. The dose of the drug starts at 5 mg daily and increases by 5 mg every week until it

Sponsors

Zahedan University of Medical Sciences
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 65 Years

Inclusion criteria

Inclusion criteria: Diagnosis of schizophrenia by a physician according to the DSM-5 criteria. Informed consent obtained from the patient or their legal guardian for participation in the study

Exclusion criteria

Exclusion criteria: Pregnancy or breastfeeding for female patients. History of allergy to memantine History of liver or kidney disorders History of cardiac conduction disorders or arrhythmias

Design outcomes

Primary

MeasureTime frame
Psychotic symptom status. Timepoint: Day zero (before the start of the intervention) and eight weeks after the intervention. Method of measurement: Cognitive impairment questionnaire.;Cognitive symptoms. Timepoint: Day zero (before the start of the intervention) and eight weeks after the intervention. Method of measurement: Cognitive impairment questionnaire.;Negative symptoms. Timepoint: Day zero (before the start of the intervention) and eight weeks after the intervention. Method of measurement: Cognitive impairment questionnaire.

Countries

Iran (Islamic Republic of)

Contacts

Public ContactAzadeh Hasanzehi

Zahedan University of Medical Sciences

Azadeh.hasanzehi@zaums.ac.ir+98 54 3351 3778

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026