No cannabis product has FDA approval to treat PTSD. The two drugs with FDA approval for PTSD are sertraline and paroxetine, both SSRIs. Evidence for cannabis in PTSD comes from small trials, case reports, and surveys. That evidence does not meet the standard for a prescription recommendation.
How Does Medical Cannabis Affect the PTSD Brain
FDA status
- No cannabis or cannabinoid product is approved for PTSD.
- Epidiolex, a purified CBD product, is approved for seizures in three rare epilepsy syndromes. It is not approved for PTSD.
- Dronabinol and nabilone are approved for chemotherapy-induced nausea and vomiting. Nabilone is not marketed in the US.
- Sertraline and paroxetine remain the only FDA-approved PTSD medications.
What the trials show
Most published trials of cannabinoids in PTSD enrolled fewer than 100 people and ran 12 weeks or less. A pilot trial of nabilone reported fewer nightmares in PTSD patients. Sample sizes were 10 to 47 people. Trials of CBD in PTSD report mixed results on symptom scores.
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Observational studies show that some people with PTSD use cannabis for sleep and nightmares. Self-report is not a measure of efficacy. A 2019 systematic review found insufficient evidence to recommend cannabinoids for PTSD.
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State medical cannabis programs
PTSD is a qualifying condition in more than 20 state medical cannabis programs. Qualifying lists set legal access. They are not findings that a product works. State law and FDA approval are separate tracks.
Cannabis vs Antidepressants for PTSD: A Comprehensive Buying Guide
VA providers do not recommend cannabis for PTSD. The 2023 VA/DoD clinical practice guideline lists cannabis as a treatment with insufficient evidence.
Risks
- About 3 in 10 people who use cannabis develop cannabis use disorder at some point.
- Some studies of veterans report higher PTSD symptom scores among heavy users. These studies cannot show cause.
- Heavy use is linked to memory problems, worse sleep quality, and cannabis hyperemesis syndrome.
- Cannabis can interact with SSRIs, benzodiazepines, and blood thinners.
Questions for a clinician
- Which PTSD symptoms are the target: nightmares, hyperarousal, or avoidance?
- Have trauma-focused therapy and an SSRI been tried?
- What is the plan if cannabis use increases?
- How will symptom change be measured over 8 to 12 weeks?