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The long-term safety and effect of memantine on PTSD: an open trial

The long-term safety and effect of memantine on PTSD: an open trial

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCTs031230484
Enrollment
40
Registered
2023-11-29
Start date
2024-02-27
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

PTSD PTSD

Interventions

Memantine

Sponsors

Zui Narita
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) PTSD patients who are over 18 years old and under 60 years old. 2) Patients who are receiving outpatient treatment at the National Center of Neurology and Psychiatry Hospital, collaborative research institutions, or other psychiatric medical institutions. 3) Patients who have the capacity to give informed consent themselves and from whom informed consent can be obtained. 4) Patients who wish to participate in this trial after successfully completing the fixed-dose administration and observation period in the exploratory randomized double-blind placebo-controlled comparison trial evaluating the efficacy and safety of memantine for PTSD conducted at our center, with Dr. Kim Yoshiharu as the principal investigator.

Exclusion criteria

Exclusion criteria: 1) Patients with active schizophrenia or significant manic episodes in bipolar disorder. 2) Patients with strong suicidal ideation. 3) Patients with severe physical illnesses that could interfere with participation in the study, such as fractures. 4) Patients who are pregnant. 5) Patients who have the following physical illnesses, which are labeled as "cautionary use" in the package insert: -Patients with a history of epilepsy or seizures -Patients with impaired renal function -Patients with factors that increase urine pH (renal tubular acidosis, severe urinary tract infection, etc.) -Patients with severe liver dysfunction 6) Any other patients who the attending physician determines are not suitable for inclusion in the study.

Design outcomes

Primary

MeasureTime frame
Adverse events evaluated using the UKU Side Effect Rating Scale, blood tests, and blood pressure measurements.

Secondary

MeasureTime frame
PDS-5 (PTSD Diagnostic Scale for DSM-5) IES-R (Impact of Event Scale-Revised) PTCI (Posttraumatic Cognitions Inventory) DES (Dissociative Experiences Scale) BDI-II (Beck Depression Inventory-II) STAI (State-Trait Anxiety Inventory) CGI (Clinical Global Impression) RBANS (Repeatable Battery for the Assessment of Neuropsychological Status)

Contacts

Public ContactNarita Zui

National Center of Neurology and Psychiatry

zuinarita@ncnp.go.jp+81-42-341-2711

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026