# Cannabis Improves Obsessive-Compulsive Disorder—Case Report and Review of the Literature > **Author:** Benjamin Caplan, MD (ABFM Board Certified, MA Lic. #240562, NPI: 1962722637) > **Publisher:** CED Clinic (https://cedclinic.com) > **Canonical URL:** https://cedclinic.com/cannabis-based-medicine-ocd-treatment-case-report/ > **Published:** 2021-06-15T15:27:18-04:00 | **Last Modified / Clinically Audited:** 2026-09-28T11:17:05-04:00 > **Clinical Summary:** Explore cannabis-based medicine OCD treatment through case reports showing symptom improvement and quality of life benefits in obsessive-compulsive disorder. --- In Summary: Obsessive-compulsive disorder (OCD) is a severe and underdiagnosed mental disorder that causes substantial impairments in most patients’ quality of life. It is characterized by the presence of obsessions – which are recurrent and persistent thoughts, urges, or images that are intrusive, unwanted, and cause anxiety and distress – and compulsions – which are repetitive behaviors or mental acts that the patient performs to alleviate the obsessions. The [endocannabinoid system](https://cedclinic.com/cannabis-pre-workout-routine-benefits-tips/) (ECS) is a prevalent and important signaling system in the brain, which comprises native signalling molecules called endocannabinoids, [cannabinoid receptors](https://cedclinic.com/citral-cannabinoid-receptor-2-activation-pain-relief/) CB1 and CB2 which they (as well as plant-based cannabinoids like THC) bind to, and the enzymes that synthesize and degrade them. In the early 2000s, data obtained from several animal studies suggested the involvement of the brain’s ECS in causing OCD, as well as the improvement of OCD-like behaviors following stimulation of the ECS. Based on these findings, psychologists and psychotherapists began a careful, deliberate experimentation on treating OCD with drugs that stimulate the ECS. Starting 2008, case reports and trials on the benefits of cannabinoid-derivative medicines in patients with pure OCD began being conducted. Since then, successful treatment with dronabinol – the synthetic form of THC from cannabis – which activates brain [cannabinoid receptors](https://cedclinic.com/citral-cannabinoid-receptor-2-activation-pain-relief/) CB1, in patients with treatment refractory OCD has been documented twice. In addition, data from a small uncontrolled trial using the THC analogue nabilone suggested that the combination of nabilone and exposure-based psychotherapy is more effective than each treatment alone for improving OCD. Most recently, an international group of psychologists and psychotherapists from Poland and Germany presented the case of a young male patient, who suffered from severe OCD since childhood and developed associated depression during adolescence. This patient’s severe symptoms significantly improved after treatment with the cannabis-based drug Bedrocan (containing 22% THC and <1% CBD) with markedly reduced OCD and depression, which considerably improves his quality of life. Through these case reports and uncontrolled trials, the researchers highlighted the great potentials of [cannabis-based medicine](https://cedclinic.com/former-nfl-quarterback-urges-athletes-to-consider-cbd-products/) in treating OCD. Nonetheless, more in-depth studies into the mechanisms of actions of these drugs, as well as more controlled trials with bigger participant pools are required before [cannabis-based medicine](https://cedclinic.com/former-nfl-quarterback-urges-athletes-to-consider-cbd-products/) can be officially recognized and established as a standard treatment for OCD. [https://cedclinic.com/contact/](https://cedclinic.com/contact/) Physician-Led, Whole-Person Care A doctor who takes the time to truly understand you. Personal care that starts with listening and is guided by experience and ingenuity. Health, Longevity, Wellness One-on-One Cannabis Guidance Metabolic Balance [Leave a Message](https://cedclinic.com/contact/) [Metabolic Care](https://cedclinic.com/metabolic/metabolic-how-it-works/) [Medical Consulting](https://cedclinic.com/book/) [Cannabis Care](https://cedclinic.com/book/) [https://cedclinic.com/contact/](https://cedclinic.com/contact/) RELATED READING AT CED CLINIC Continue exploring the evidence [Teens Who Use Cannabis Face Higher Risk Of Mental Disorders, Study Finds – Forbes](https://cedclinic.com/teen-cannabis-use-mental-health-risks-study/) This article discusses the increased mental health risks associated with [adolescent cannabis use](https://cedclinic.com/adolescent-cannabis-use-and-anxiety-research/), providing important context for [cannabis and mental health](https://cedclinic.com/endocannabinoid-system-fear-extinction/) research. [Read More](https://cedclinic.com/teen-cannabis-use-mental-health-risks-study/) [Lynn Silver, MD, MPH, FAAP, warns of psychiatric risks with adolescent cannabis use](https://cedclinic.com/adolescent-cannabis-exposure-psychiatric-risks/) Expert insights on psychiatric risks linked to [adolescent cannabis use](https://cedclinic.com/adolescent-cannabis-use-and-anxiety-research/), highlighting the need for careful consideration in mental health treatments. [Learn More](https://cedclinic.com/adolescent-cannabis-exposure-psychiatric-risks/) [Neurological and neurodegenerative conditions, physical activities, and the endocannabinoid system – how might all these be linked?](https://cedclinic.com/endocannabinoid-system-neurological-disorders-link/) Explores the role of the [endocannabinoid system](https://cedclinic.com/cannabis-pre-workout-routine-benefits-tips/) in neurological health and its potential implications for conditions like OCD. [Explore Article](https://cedclinic.com/endocannabinoid-system-neurological-disorders-link/) Have thoughts on this? 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