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Case Report: Oral glutamatergic augmentation for trauma-related disorders with fluoxetine-/bupropion-potentiated dextromethorphan ± piracetam: a four-patient case series.

Ngo Cheung

Frontiers in psychiatry January 1, 2026 DOI: 10.3389/fpsyt.2026.1752101 via PubMed

Summary

AI-generated from the abstract

Four patients with hard-to-treat trauma-spectrum disorders—somatic PTSD, acute bereavement-related PTSD, trauma-linked adolescent depression, and complex PTSD with bipolar II, ADHD, and borderline features—showed clinically meaningful symptom improvement within days to weeks after starting an inexpensive oral protocol centered on dextromethorphan potentiated by fluoxetine, with optional piracetam or bupropion. Reductions in intrusive memories, rumination, somatic pain, and functional disability were noted; no episodes of dissociation, hypertension, or mania were clinically documented during follow-up, though structured screening for hypomania and serotonergic toxicity was not performed. The findings are hypothesis-generating and suggest further controlled investigation of oral NMDA-AMPA modulators for trauma-related conditions.

Study at a glance

Characteristics Case series Case report Peer reviewed
Sample size 4
Population Patients with hard-to-treat trauma-spectrum disorders
Interventions Dextromethorphan Fluoxetine Piracetam Bupropion
Duration Days to weeks (intervention and follow-up period not explicitly stated)
Topics PTSD
Keywords Ampa Nmda Glutamatergic Trauma
Key finding An oral dextromethorphan-based protocol potentiated by fluoxetine produced clinically meaningful symptom improvement within days to weeks in four patients with trauma-spectrum disorders, with no documented episodes of dissociation, hypertension, or mania.

Abstract

Traditional monoaminergic medications often offer limited relief for the physical and cognitive symptoms of post-traumatic stress disorder (PTSD) and complex PTSD. Growing data now point to fast-acting, glutamate-based treatments that boost synaptic plasticity and interrupt fear-conditioned neural circuits. We report four sequential cases of hard-to-treat trauma-spectrum disorders-somatic PTSD, acute bereavement-related PTSD, trauma-linked adolescent depression, and complex PTSD complicated by bipolar II disorder, ADHD, and borderline features-that showed clinically meaningful symptom improvement, typically within days to weeks, with an inexpensive, fully oral protocol centred on dextromethorphan (DXM) potentiated by fluoxetine, with optional add-on piracetam and/or bupropion. All four patients showed notable reductions in intrusive memories, rumination, somatic pain, and functional disability; no episodes of dissociation, hypertension, or mania were clinically documented during follow-up, although structured screening for hypomania/mania and serotonergic toxicity was not performed. These findings are strictly hypothesis-generating and broaden the ketamine/Auvelity framework to trauma-spectrum presentations. They suggest that further controlled investigation into oral NMDA-AMPA modulators may be warranted for trauma-related conditions.

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