Drug Classes

Dissociative Anesthetic Drug Class

Dissociative anesthetics — primarily ketamine — produce pain relief, sedation, and altered consciousness by blocking NMDA receptors. At sub-anesthetic doses, compounded ketamine is used for treatment-resistant depression, chronic pain, CRPS, and PTSD.

How It Works

Ketamine blocks NMDA (N-methyl-D-aspartate) glutamate receptors, disrupting pain signal transmission and triggering rapid antidepressant effects through BDNF release and synaptogenesis. It also interacts with opioid, AMPA, and sigma receptors.

Why Compounded?

IV ketamine infusions use pharmaceutical-grade ketamine, but intranasal, oral lozenge (troche), topical cream, and sublingual formulations for outpatient and home use all require compounding. Doses, concentrations, and combinations with other analgesics require customization.

Common Uses

  • Treatment-resistant depression (TRD)
  • Post-traumatic stress disorder (PTSD)
  • CRPS (Complex Regional Pain Syndrome)
  • Chronic neuropathic pain
  • Fibromyalgia
  • Migraine and cluster headaches
  • Procedural anesthesia augmentation

Common Compounded Medications

  • Ketamine Nasal Spray (compounded)
  • Ketamine Oral Troches / Sublingual
  • Ketamine Topical Cream
  • Ketamine / Gabapentin / Clonidine Topical Compound
  • Ketamine Injection (for infusion protocols)

Regulatory & Safety Notes

Ketamine is FDA-approved as an injectable anesthetic. Esketamine (Spravato) is FDA-approved for TRD as a nasal spray but requires in-office administration. Compounded ketamine formulations (nasal, troche, topical) are 503A patient-specific preparations. Ketamine is a Schedule III controlled substance.

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