Clinical Trial

Methylphenidate for the Treatment of PTSD With Associated Neurocognitive Complaints

Study acronym: IMPACT
Recruiting Phase 4
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Record status
This record was last updated January 9, 2026 (before its estimated July 6, 2026 completion). Its status may not reflect the trial's current state.
Summary
Posttraumatic stress disorder (PTSD) is frequently accompanied by difficulty concentrating, poor memory, and inability to keep up with tasks, which negatively impacts a person's ability to function at work and in relationships. Currently available treatments do not fully relieve all symptoms. A published research report showed positive evidence that the stimulant medication methylphenidate was beneficial in treating these problems. This study will evaluate the ability of methylphenidate to treat PTSD and associated neurocognitive complaints in Veterans. An innovative feature is the study's N-of-1 design. In this design, every participant will move back and forth every 4-5 weeks between treatment with methylphenidate and treatment with placebo, in random order and under double-blind conditions, over a 20-week period. The investigators will compare the aggregated change in PTSD and neurocognitive symptoms between periods of treatment with methylphenidate versus placebo. Results will help clinicians to better choose the best treatment for Veterans living with PTSD.
Protocol Amendment History 7 amendments
This ClinicalTrials.gov record has been amended 7 times since 2023-03-08; most recent amendment 2026-01-07.
Status change: Not Yet Recruiting → Recruiting 2024-02-08
Trial Details
NCT Number NCT05776056
Lead Sponsor VA Office of Research and Development
Conditions Posttraumatic Stress Disorder (PTSD)
Enrollment 70 participants
Start Date 2024-02-05
Primary Completion 2026-07-06 (estimated)
Study Completion 2027-03-31 (estimated)
Updated on ClinicalTrials.gov 2026-01-09