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Is Cannabis Used in Conjunction with Ketamine Therapy for Depression? 

Author: Dr. Clarissa Morton, PharmD

The idea of combining cannabis and ketamine therapy is attracting attention as interest in new treatments for depression  continues to grow. Ketamine has emerged as a rapid-acting option for those with treatment-resistant depression, while cannabis is being studied for its potential in mood regulation and stress relief. Some suggest that together, they could offer complementary benefits, though evidence remains limited. 

Both substances influence brain chemistry in different ways: ketamine targets glutamate signalling, while cannabis acts on the endocannabinoid system. This has led to speculation that their combined use could create stronger or longer-lasting effects. However, concerns about safety, dosing, and unpredictable interactions mean more research is needed. 

Exploring Combined Use 

Studies considering cannabis and ketamine therapy focus on whether their interaction could support new treatment approaches for depression. 

Combined Treatment 

The concept of combined treatment suggests cannabis could help ease anxiety before or after ketamine sessions, potentially making the experience more tolerable. Yet, clinical trials on this pairing are scarce. 

Psychedelic-Assisted Therapy 

Interest in psychedelic-assisted therapy has expanded rapidly, with ketamine leading the way. Cannabis is sometimes discussed in the same space, but its role in structured treatment models is still uncertain. 

Depression Innovation 

The use of depression innovation strategies often includes testing novel combinations of therapies. Cannabis alongside ketamine is one such idea, though it remains experimental and not part of mainstream care. 

In summary, while cannabis and ketamine therapy may one day be explored as a joint approach, current evidence is too limited to recommend their use together. Safety and clinical testing must come first. 

For patients curious about innovative treatments for depression, providers like LeafEase can offer professional consultations to explore safe, evidence-based options. 

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to Medical Cannabis and Depression. 

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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