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Can Cannabis Be Used Alongside Ketamine Infusions for CRPS? 

Posted
Updated
ByMy Patient Advice
Author: Dr. Clarissa Morton, PharmD

Ketamine infusions are often reserved for severe cases of CRPS that don’t respond to standard treatments. But with medical cannabis increasing in popularity, many patients and clinicians are exploring how cannabis and ketamine might work together and whether combining them makes sense. 

The short answer? Yes, cannabis and ketamine can be used alongside each other, but only under close medical supervision. Their mechanisms differ, but both are used to modulate pain, reduce nervous system hypersensitivity, and support non-opioid approaches to chronic care. 

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How the Two Work Together 

Here’s what to consider when combining cannabis and ketamine in CRPS treatment: 

  • Distinct but complementary effects 
    Ketamine is a dissociative anaesthetic that targets NMDA receptors to reset pain pathways. Cannabis, by contrast, works through the endocannabinoid system to ease inflammation and nerve sensitivity. Used together, they offer a powerful non-opioid therapy approach. 
  • Tailored medication comparison needed 
    While some patients find synergy between the two, others may experience fatigue, dizziness, or confusion, especially with high-THC strains. A thorough medication comparison helps determine ideal timing, dosing, and cannabinoid profile. 
  • Part of integrative pain care 
    Many clinics now view this pairing as part of wider integrative medicine strategies. Cannabis can bridge gaps between ketamine treatments, ease anxiety around infusions, and maintain symptom relief between sessions. 
  • Monitoring is essential 
    Both substances affect perception, mood, and cognition. When combined, monitoring for sedation, emotional shifts, and functional impact is vital for patient safety and treatment success. 

If you’re considering combining cannabis and ketamine, it’s best to work with a multidisciplinary team that understands the nuances of both therapies. 

Visit providers like LeafEase to explore balanced treatment plans that incorporate ketamine, cannabis, and other advanced therapies tailored to your CRPS journey. 

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to medical cannabis and Complex Regional Pain Syndrome (CRPS). 

Dr. Clarissa Morton, PharmD
Author

Dr. Clarissa Morton is a licensed pharmacist with a Doctor of Pharmacy degree and experience across hospital, community, and industrial pharmacy. She has worked in emergency, outpatient, and inpatient pharmacy settings, providing patient counseling, dispensing medications, and ensuring regulatory compliance. Alongside her pharmacy expertise, she has worked as a Support Plan & Risk Assessment (SPRA) officer and in medical coding, applying knowledge of medical terminology, EMIS, and SystmOne software to deliver accurate, compliant healthcare documentation. Her skills span medication safety, regulatory standards, healthcare data management, and statistical reporting.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy. 

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