Is Ketamine-Assisted Psychotherapy (KAP) Useful in Treating OCD?

If therapy and SSRIs haven’t helped your Obsessive-Compulsive Disorder (OCD), what’s next? This is a question that is faced by 1 million Americans suffering from OCD who do not respond well to traditional treatments. Older methods of treatment have let down many people to battle difficult compulsions and obsessions all alone. But, ketamine for OCD might be able to help some.

Ketamine-assisted psychotherapy for obsessive-compulsive disorder has become one of the most happening therapies. If you are wondering whether ketamine is good for you and your condition, stay tuned.

We have elaborated on the topic of ketamine therapy for OCD and whether it is as effective as people suggest. We will also touch on where you can find reliable ketamine therapy options so you can tackle OCD the right way.

What Is the Link Between Ketamine Therapy and OCD?

Ketamine treats various mental health illnesses through a therapy method known as ketamine-assisted psychotherapy. According to studies, KAP can be effective against anxiety, treatment-resistant depression, post-traumatic stress disorder (PTSD), bipolar disorder, and obsessive-compulsive disorder (OCD).

OCD has many treatment options, but just like depression, it can also have ineffective cases. These are individuals who don’t show much improvement with cognitive-behavioral therapy (especially Exposure and Response Prevention) and medications like SSRIs (Selective Serotonin Reuptake Inhibitors).

As an alternative, ketamine has shown great promise in treating OCD symptoms much more effectively. Ketamine takes effect within an hour and can provide relief within 2 to 3 hours of administration. 

Three studies suggest the link and effectiveness of ketamine for OCD:

  • In a 2017 Stanford study, patients reported dramatic decreases in intrusive thoughts midway through a 40-minute infusion.
  • A 2025 study found ketamine (0.5 mg/kg) led to a 60% response rate (vs. 10% with fentanyl), with improvements observed within 1–2 hours.
  • Intravenous ketamine decreased OCD symptom scores by ~50% within the first hour in pooled studies.

How Does Ketamine Work for OCD?

As a drug, ketamine is considered to be an NMDA receptor antagonist; a general anesthetic; a dissociative hallucinogen; an analgesic; and an antidepressant. It has some effects related to how ketamine works in the body, especially in the brain, when taken in recommended doses.

Firstly, it starts to change the way glutamate, a chemical, works in the brain. In OCD, repetitive thoughts trap some brain areas in a continuous loop. This causes the individual to have compulsions and obsess over unnecessary actions.

Ketamine breaks this ongoing loop by calming down the brain’s areas involved in repetitive thought patterns. It might not be the permanent solution, but many still prefer this fast relief over turning to traditional therapeutic interventions.

Secondly, scientists are still learning exactly how it helps, but many people with OCD who don’t respond to regular treatments have seen improvements with ketamine.

Thirdly, ketamine also enhances neuroplasticity. It increases brain-derived neurotrophic factor (BDNF), promoting synaptic growth and new neural pathways.

What Are the Effects of OCD?

What Are the Effects of OCD?

If you constantly ask yourself if ketamine is good for you, it is important to learn about its relationship to the effects of OCD. Apart from the problems you may face in day-to-day life in the completion of tasks, constant lateness, and reduced quality of life; the effects of OCD can be detrimental.

Many people report feeling:

  • Intrusive, unwanted thoughts that are repetitive and distressing
  • Heightened anxiety often arises when individuals don’t perform their rituals
  • Constant feelings of doubt or uncertainty
  • Perfectionism that interferes with daily tasks
  • Intense fear of contamination, harm, or making mistakes
  • Difficulty concentrating due to obsessive thoughts
  • Depression or feelings of hopelessness from chronic struggle
  • Low self-esteem and self-criticism
  • Excessive guilt or shame over “immoral” or “taboo” thoughts

But, some OCD struggles are also felt in the behavior of a person. Some behavioral changes recorded can be:

  • Repetitive rituals or compulsions (e.g., handwashing, checking, counting)
  • Avoidance of situations that trigger obsessions
  • Delays in daily routines due to compulsive behaviors
  • Reassurance-seeking (constantly asking if something is okay or safe)
  • Mental rituals (like repeating phrases or silently praying)

Some studies have also shown that OCD can manifest itself in physical forms like:

  • Skin irritation or damage from excessive washing
  • Fatigue from mental strain or lost sleep
  • Muscle tension and stress-related aches
  • Increased heart rate and other stress responses
  • Weight changes from disrupted eating habits or stress

People who suffer from OCD often cannot verbalize their difficulties. It is very important for you to understand their problems and guide them toward a better mental health journey. Always remember to validate their feelings so patients can decide to seek an OCD therapist to help themselves.

The Pros and Cons of Using Ketamine-Assisted Psychotherapy for OCD

The Pros and Cons of Using Ketamine-Assisted Psychotherapy for OCD

There are some clear advantages of patients choosing KAP for OCD over other treatments. One thing to remember is that usually people who have tried traditional methods stay and have received no relief are the perfect candidates for this treatment.

The benefits of getting ketamine therapy for OCD are:

  • Rapid Symptom Relief – Patients often report reductions in obsessive thoughts and compulsions within hours of administration, unlike traditional SSRIs/SNRIs, which take weeks to work.
  • Effective for Treatment-Resistant Cases – KAP benefits 40–60% of patients who do not respond to first-line therapies like SSRIs or cognitive-behavioral therapy (CBT).
  • Neuroplasticity Enhancement– Ketamine increases brain-derived neurotrophic factor (BDNF), promoting synaptic growth and new neural pathways to counteract rigid OCD thought patterns.
  • Synergy with Psychotherapy – Ketamine’s dissociative effects create a “therapeutic window” where patients are more receptive to exposure and response prevention (ERP) therapy, accelerating trauma processing and behavioral changes.
  • Reduction in Comorbid Depression -Even temporary OCD symptom relief can alleviate comorbid depression, which affects one-third of OCD patients, providing a broader mental health benefit.
  • Potential for Personalized ProtocolsEmerging research explores biomarker-guided dosing (e.g., glutamate levels) and non-invasive formulations (e.g., oral hydroxynorketamine) to optimize outcomes.

Challenges of ketamine-assisted psychotherapy for OCD:

  • Short-Lived Effects – Symptom relief typically lasts 1 to 3 weeks, necessitating repeated infusions (every 4–6 weeks) or adjunct therapies for sustained benefits.
  • Variable Response Rates – Only 21% to 60% of patients experience significant improvement, depending on dosing, administration route, and individual factors like cognitive control.
  • High Cost and Limited Accessibility– Sessions cost $400 to $800 each, with most insurers refusing coverage due to its off-label status. Few clinics offer KAP, particularly in rural areas.

Treatments for Obsessive-Compulsive Disorder

Each illness has a line of treatments usually laid out. These have a chronology that suggests if the first options fails for you, you should move onto the next best option. In the case of obsessive-compulsive disorder, there are many treatments that are rrecommended to patients.

TreatmentRecommended ForSuccess Rate
CBT + ERPFirst-line50% to 60%
SSRIs/ClomipramineFirst-line40% to 60%
Antipsychotic AugmentationSSRI non-responders30% to 40%
KAPTreatment-resistant OCD21% to 60%
DBSSevere, refractory cases~60%

Evidence-Based Treatments for OCD

Based on many studies and sources, psychotherapy is considered the first line of treatment for OCD. This can include subjecting the patient to Cognitive Behavioral Therapy (CBT) and Exposure and Response Prevention (ERP). Both of these help the person gradually expose themselves to fear triggers while resisting compulsions. It also challenges irrational beliefs, like “If I don’t wash, I’ll die”.

Medications

Medications such as SSRIs (Prozac, Zoloft, Luvox) and Tricyclic Antidepressants (Anafranil) are the next first-line treatment suggested for OCD. As these are oral medications they require higher doses of about 60 to 80 mg/day. The second line of treatment is usually Antipsychotics (Aripiprazole, risperidone) and Glutamatergic Agents (Memantine, riluzole).

Advanced/Experimental Treatments

New treatments are emerging, such as Deep Brain Stimulation (DBS) and Electroconvulsive Therapy (ECT). These are suggested to patients who are suffering from debilitating symptoms of OCD and are considered treatment-resistant cases. Even patients with comorbid depression are suggested for these therapy options.

Ketamine-assisted psychotherapy (KAP) for OCD

Even though KAP is not considered a standard treatment, research has suggested that KAP is a great treatment option for OCD. Patients can get rapid relief, experience better breaks in intrusive patterns, and make daily life decisions without experiencing any compulsions or obsessions.

Treatment-resistant cases can choose KAP over experimental treatments. Even though ketamine may also not have been researched much, it still has direct links to improvement in OCD symptoms. The only thing to remember for many patients will be to find a reliable provider.

Where to Find Reliable Ketamine Therapy for OCD?

Ketamine is a highly regulated drug in the U.S. hence, you may have to check your nearest government ketamine clinics for assistance. That said, many ketamine-assisted psychotherapy experts are available in each state that provides solo or group sessions.

The Ko-Op also has a list of more than 20 therapists who practice safe and effective ketamine therapy sessions. If you are interested in knowing more about KAP, you can connect with us here for a free consultation.

We also offer specialized KAP training to already licensed therapists in the US. Our training spans 6-weeks and is available to nationwide practicing therapists who are interested in adding KAP to their practice.

If this option seems out of your range as a patient, you can contact local government non-profit ketamine therapy providers, such as Thank You Life, Serenity Foundation, and the American Society of Physicians, Psychotherapists, and Practicioners

Wrapping up

It is no shock that ketamine is slowly being discovered as a good treatment for many mental illnesses. As recent studies show, ketamine, when combined with psychotherapy can be a non-invasive way to offer life-changing therapy to all patients.

Ketamine is also being considered as one of the best medications for getting rapid relief from worrisome symptoms. It’s just a matter of time before FDA approvals are on the way to certify more ketamine drugs to help with talk therapy and patient integration for future options.

FAQs

Q1. Can Obsessive Compulsive Disorder Be Cured?

While complete curing OCD is uncommon, consistent therapies for OCD can reduce symptoms and help individuals manage daily life effectively.

Q2. How Long Does Ketamine Last for OCD?

The effects of ketamine for OCD may last from several days to a week, varying by dose, frequency, and individual response.

Q3. What Does Ketamine Nasal Spray Feel Like?

Ketamine therapy for OCD using nasal spray often feels calming, with mild dissociation, lasting around 40 minutes to an hour typically.

If you’re living with OCD and traditional treatments haven’t worked, Ketamine-Assisted Psychotherapy offers a different path.
Explore safe, supportive care available in Pennsylvania, and Delaware.

Picture of Sophia Brandstetter

Sophia Brandstetter

Dr. Sophia Brandstetter, LCSW, PsyD, specializes in complex and generational trauma. She is the founder of The Ko-Op, a Philadelphia-based center offering Ketamine-Assisted Psychotherapy. In addition to treating clients, she trains fellow clinicians in this modality. Her work integrates psychodynamic, mindfulness, and relational approaches with expanded states of consciousness for deep healing and transformation.