# Marked Improvement in Treatment-Intolerant Obsessive-Compulsive Disorder in an Adolescent Using a Glutamatergic Regimen With Dextromethorphan, Piracetam, and Goldenseal Root

**Authors:** Ngo Cheung

PMC · DOI: 10.7759/cureus.104617 · Cureus · 2026-03-03

## TL;DR

A 16-year-old boy with severe OCD who couldn't tolerate standard treatments improved significantly with a new oral regimen combining dextromethorphan, piracetam, and goldenseal.

## Contribution

A novel, oral glutamatergic regimen using dextromethorphan, piracetam, and goldenseal showed promise for treatment-intolerant OCD.

## Key findings

- Symptoms improved significantly within four weeks, meeting remission thresholds.
- The regimen included no negative effects from goldenseal and lasted for two months.
- The treatment allowed full school attendance and functioning to return.

## Abstract

A 16-year-old boy with severe obsessive-compulsive disorder (OCD), characterized by health-focused obsessions, intrusive ruminations, derealization, and significant functional impairment, failed to tolerate standard serotonergic agents (escitalopram, fluoxetine) and bupropion due to worsening anxiety, somatic concerns, or headaches. An oral glutamatergic regimen was initiated with dextromethorphan 30 mg/day for N-methyl-D-aspartate (NMDA) antagonism, piracetam 1,200 mg/day for AMPA modulation, and goldenseal (Hydrastis canadensis) root extract 600 mg/day as a botanical CYP2D6 inhibitor to prolong dextromethorphan exposure, alongside low-dose pregabalin, risperidone, and aripiprazole for ancillary support. Within four weeks of adding goldenseal, symptoms markedly improved, meeting remission thresholds: the Patient Health Questionnaire-9 (PHQ-9) score fell to 2, GAD-7 score to 3, obsessive thoughts and derealization resolved, headaches ceased, and full school attendance and functioning returned. These benefits lasted for two months, and there were no negative effects from goldenseal. This case indicates that a cost-effective, entirely oral amalgamation of a prevalent cough suppressant, a nootropic, and a botanical supplement may yield ketamine-like glutamatergic advantages for patients with OCD who are intolerant to conventional treatments; however, controlled studies are required to validate efficacy and safety.

## Linked entities

- **Chemicals:** dextromethorphan (PubChem CID 5360696), piracetam (PubChem CID 4843), pregabalin (PubChem CID 4715169), risperidone (PubChem CID 5073), aripiprazole (PubChem CID 60795)
- **Diseases:** obsessive-compulsive disorder (MONDO:0008114), OCD (MONDO:0001158)
- **Species:** Hydrastis canadensis (taxon 13569)

## Full-text entities

- **Genes:** CYP2D6 (cytochrome P450 family 2 subfamily D member 6 (gene/pseudogene)) [NCBI Gene 1565] {aka CPD6, CYP2D, CYP2D7AP, CYP2D7BP, CYP2D7P2, CYP2D8P2}
- **Diseases:** fatigue (MESH:D005221), jaundice (MESH:D007565), weight gain (MESH:D015430), low mood (MESH:D019964), anxiety-obsessional disorders (MESH:D001008), major depression (MESH:D003865), obsessional distress (MESH:D012128), head injuries (MESH:D006259), headaches (MESH:D006261), gastrointestinal problems (MESH:D012817), asthma (MESH:D001249), schizophrenia (MESH:D012559), anxiety (MESH:D001007), psychiatric (MESH:D001523), insomnia (MESH:D007319), liver damage (MESH:D056486), OCD (MESH:D009771), depression (MESH:D003866), functional impairment (MESH:D003072), GAD-7 (MESH:C537955), Generalized Anxiety Disorder (MESH:C000726808), dissociation (MESH:D004213), restlessness (MESH:D011595), hepatic or gastrointestinal complaints (MESH:D005767), psychotic (MESH:D011618)
- **Chemicals:** DXM (MESH:D003915), hydrastine (MESH:C013024), risperidone (MESH:D018967), N-methyl-D-aspartate (MESH:D016202), Lemborexant (MESH:C000634104), alkaloid (MESH:D000470), glutamate (MESH:D018698), Bupropion (MESH:D016642), aripiprazole (MESH:D000068180), escitalopram (MESH:D000089983), Fluoxetine (MESH:D005473), L-glutamine (MESH:D005973), serotonin (MESH:D012701), quetiapine (MESH:D000069348), magnesium (MESH:D008274), Piracetam (MESH:D010889), berberine (MESH:D001599), Goldenseal Root (-), AMPA (MESH:D018350), Pregabalin (MESH:D000069583), lorazepam (MESH:D008140)
- **Species:** Hydrastis canadensis (goldenseal, species) [taxon 13569], Homo sapiens (human, species) [taxon 9606]

## Full text

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## Figures

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## References

21 references — full list in the complete paper: https://tomesphere.com/paper/PMC12955823/full.md

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Source: https://tomesphere.com/paper/PMC12955823