Ketamine for OCD

The OCD literature is genuinely interesting and genuinely small. One proof-of-concept crossover trial reported rapid reduction in obsessive symptoms, and it has not been replicated at the scale the depression research has. That is the accurate description, and it should shape what you expect.

Proof of concept
Stage the OCD Evidence Has Reached
ERP
First-Line Treatment, Ahead of Any Medication Decision
Glutamate
Pathway Implicated in OCD Neurobiology
Adjunct
Realistic Role Alongside Therapy, Not Replacing It

The Honest State of the Evidence

Rodriguez and colleagues ran a randomized crossover trial in unmedicated OCD patients and reported rapid reduction in obsessive symptoms after a single ketamine infusion. It is a real result and worth taking seriously. It is also a small proof-of-concept study, and the replication literature has not caught up with it. Treating that as equivalent to the depression evidence would misrepresent where things stand.

  • A single small randomized crossover trial, not a body of replicated work
  • The studied population was unmedicated, unlike most patients who contact us
  • Effect on obsessions was clearer than effect on compulsions
  • Durability beyond the short term is not well characterized
  • Depression research does not transfer automatically to OCD

ERP Comes First, and That Is Not a Formality

Exposure and response prevention has the strongest outcome evidence of any OCD treatment, medication included. If you have not had a proper ERP course with a therapist trained in it, that is the highest-value next step and it is not close. A large share of people who believe ERP failed them actually had supportive talk therapy about their OCD, which is a different thing and does not work for OCD.

  • ERP has the strongest evidence base in OCD, ahead of medication
  • Generic talk therapy about obsessions is not ERP and often makes OCD worse
  • Reassurance-seeking within therapy can function as a compulsion
  • High-dose SSRIs for OCD exceed typical depression dosing and take longer to judge
  • Twelve weeks at an adequate OCD dose is the standard before calling an SSRI failed

What Ketamine Might Add

The mechanistic case rests on glutamate. OCD involves the cortico-striato-thalamo-cortical loop, and glutamatergic dysregulation within that circuit is a recurring finding. Ketamine acts directly on that system rather than on serotonin, which is a different lever from every first-line OCD medication. The plausible use is opening a window in which ERP is more tolerable for someone too symptomatic to engage with it.

  • Direct glutamatergic action, unlike SSRIs which act on serotonin
  • CSTC loop involvement is well described in OCD neuroimaging
  • Possible role in making ERP tolerable for severely symptomatic patients
  • Not a substitute for ERP and not positioned as one here
  • Co-occurring depression is often the more evidence-supported target

Who Should Not Start Here

This page turns more people away than it accepts, deliberately. OCD is highly treatable with the right therapy, and starting with an off-label intervention that has one small trial behind it is usually the wrong order of operations.

  • Anyone who has not had a genuine ERP course with a trained therapist
  • Anyone who has not completed an adequate high-dose SSRI trial for OCD
  • Patients whose primary distress is a related but distinct condition
  • Anyone seeking certainty or reassurance, which ketamine cannot supply
  • Active substance use disorder, psychosis, or untreated bipolar mania

If You Do Proceed

For patients who have done the first-line work and remain significantly impaired, particularly where depression sits alongside the OCD, a course here is reasonable. It runs as physician-led care with the same doctor throughout and booking windows that extend past the standard clinic day.

  • Screening scored before consultation, including depression severity
  • Video consultation with Dr. Ben Soffer, DO, and a full medication review
  • Extended booking windows including 12:30 PM and 5:00 PM appointments
  • Sublingual medication shipped to your home, with a sober support person required
  • Continued ERP encouraged throughout, not paused for treatment

The OCD Literature, Small and Specific

A randomized controlled crossover trial of ketamine in unmedicated OCD patients, reporting rapid reduction in obsessive symptoms against placebo. This is the proof-of-concept study the indication rests on, and describing it as anything more established would overstate it. (Rodriguez et al., 2013 (Neuropsychopharmacology))

A 64% response rate against 28% for the active control at 24 hours in treatment-resistant depression. Relevant because depression accompanying OCD is frequently the better-supported treatment target. (Murrough et al., 2013 (American Journal of Psychiatry))

The American Psychiatric Association consensus statement on ketamine in mood disorders, covering patient selection and monitoring standards applied to every presentation evaluated here, including off-label indications. (Sanacora et al., 2017 (JAMA Psychiatry))

Frequently Asked Questions

Is ketamine an approved treatment for OCD?

No. It is off-label for OCD, and the evidence is one small crossover trial rather than the replicated literature that exists for depression. That does not make it unreasonable for a patient who has exhausted first-line options, but it does mean anyone presenting it as an established OCD treatment is ahead of the evidence.

I have done therapy for years. Does that count as ERP?

Often not, and this is worth checking carefully before concluding therapy failed. ERP is a specific protocol involving planned exposure to triggers while deliberately preventing the compulsion. Talking about obsessions supportively is a different activity and can worsen OCD by functioning as reassurance. If your therapy did not involve structured exposure with response prevention, you have not yet had the treatment with the best evidence.

Will it stop the intrusive thoughts?

The trial data suggests reduced intensity and preoccupation rather than absence of intrusive thoughts. Intrusive thoughts occur in people without OCD too; what distinguishes OCD is the distress they cause and the compulsions that follow. Reduced obsessive intensity is what to hope for, not silence.

Can I keep taking my SSRI?

Yes, and generally you should. OCD SSRI dosing runs higher than depression dosing, and stopping a partially effective medication to try something with thinner evidence is rarely the right move. Your medication list is reviewed individually during the consultation, and nothing is changed without coordinating with the prescriber who started it.

Dr. Ben Soffer, D.O., Medical Director, Tovani Health
Medically reviewed

Dr. Ben Soffer, D.O.

Medical Director, Tovani Health

Board-certified in Internal Medicine (ABIM) · Licensed in Florida, New Jersey & California

Dr. Soffer is a board-certified physician and the founder and sole prescribing clinician at Tovani Health. He personally reviews every patient’s eligibility and oversees at-home ketamine treatment for depression, anxiety, PTSD, and chronic pain.

Last reviewed August 2026 · About the physician

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OCD clinical reference

Diagnosis, the ERP evidence, and where ketamine sits

Treatment-resistant OCD

When adequate ERP and SSRI trials have not worked

Intrusive thoughts

What they are, and why having them is not the disorder

Rumination

How it differs from obsession, and what that changes

Body dysmorphic disorder

An OCD-spectrum condition treated on its own terms

PHQ-9: depression severity

Measure the mood component, often the better-supported target

Prozac and ketamine

Physician-reviewed detail for the SSRI most used at OCD doses

Lexapro and ketamine

Physician-reviewed interaction detail

OCD: clinical reference

Diagnosis, first-line treatments, and exactly where ketamine fits: the evidence-based overview.

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Is your OCD medication safe with ketamine?

Physician-reviewed drug-interaction pages for the medications most commonly prescribed for OCD. Each page covers our specific clinical approach at Tovani Health.

SSRIs (first-line for OCD, typically high doses)

Second-line / augmentation

Supplements with OCD evidence

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