A ketamine clinic is a specialized medical facility where patients receive controlled doses of ketamine, primarily to treat depression that hasn’t responded to standard antidepressants. These clinics have grown rapidly across the United States over the past decade, offering a treatment that works through a completely different brain pathway than traditional medications. Sessions typically cost $400 to $1,000 out of pocket, and most patients start with a series of six infusions over two to three weeks.
What Ketamine Clinics Treat
The core focus of most ketamine clinics is treatment-resistant depression, generally defined as depression that hasn’t improved after trying two or more antidepressant medications. The U.S. Department of Veterans Affairs and Department of Defense guidelines now suggest ketamine as an option to augment treatment for this population. Some clinics also treat patients with suicidal ideation, where ketamine’s unusually fast onset (hours rather than weeks) can be particularly valuable.
Beyond depression, many clinics offer ketamine for chronic pain conditions, PTSD, anxiety disorders, and obsessive-compulsive disorder. The evidence base varies by condition. For PTSD specifically, the VA/DoD guidelines do not currently recommend ketamine, though some clinics still offer it. Ketamine was originally developed and FDA-approved as an anesthetic, and its use for mental health conditions is considered off-label, meaning doctors can legally prescribe it but it hasn’t gone through the formal FDA approval process for those specific diagnoses.
How Ketamine Is Administered
Most ketamine clinics use intravenous (IV) infusions, where the medication is delivered directly into a vein through a small catheter. This method allows staff to control the dose precisely and adjust it in real time. A typical infusion lasts 40 to 60 minutes, and patients remain at the clinic for about two hours total to allow for monitoring afterward.
Some clinics also offer intramuscular injections, which are quicker to set up but slightly less precise in dosing. A third option is Spravato, the brand name for esketamine, a nasal spray that patients self-administer under medical supervision. Spravato is the only form of ketamine that has FDA approval specifically for treatment-resistant depression, which makes a significant difference for insurance coverage. Its dosing schedule is more rigid: twice weekly for the first four weeks, then weekly for maintenance.
What Happens During a Visit
Ketamine clinics are set up to feel less like a hospital and more like an outpatient procedure suite. You’ll typically be seated in a reclining chair, sometimes in a private or semi-private room. Before treatment begins, staff check your blood pressure, heart rate, and oxygen levels to establish a baseline.
Once the infusion starts, you may begin feeling effects within a few minutes. The most distinctive sensation is dissociation, a feeling of detachment from your body or surroundings. Some people describe it as dreamlike or floating. Others experience mild visual disturbances or a sense of time distortion. These effects are expected and temporary. Staff monitor your vital signs continuously throughout the session, tracking blood pressure, heart rate, and oxygen saturation. Blood pressure often rises temporarily during the infusion, which is why cardiovascular monitoring is standard.
After the infusion ends, you’ll stay in the clinic for an observation period. Common side effects during this window include nausea, dizziness, headache, blurred vision, and anxiety. These typically resolve within a few hours. You won’t be able to drive yourself home, so you’ll need someone to pick you up.
The Typical Treatment Schedule
Most clinics follow a two-phase approach. The induction phase involves six infusions given three times per week over two weeks. This concentrated schedule is designed to build up the therapeutic effect quickly. In clinical trials, responders were defined as patients whose depression scores dropped by at least 50% during this initial phase.
If the induction phase works, you move into maintenance. This usually means one infusion per week, though the frequency gets adjusted based on how long your symptom relief lasts. Some patients eventually space sessions out to every two to four weeks. Others find their symptoms return relatively quickly after stopping, which is one of the ongoing challenges with ketamine treatment.
How Ketamine Works in the Brain
Traditional antidepressants target serotonin or norepinephrine, two chemical messengers involved in mood regulation. Ketamine takes a fundamentally different route. It blocks a specific type of receptor involved in glutamate signaling, the brain’s primary excitatory system. This blockade triggers a cascade that increases connections between neurons, particularly in brain areas responsible for mood and cognition.
Chronic stress and depression are associated with a loss of these neural connections. Ketamine appears to promote the growth of new ones, essentially helping the brain rebuild pathways that have deteriorated. Dopamine signaling also plays an essential role in this process, activating the cellular machinery that drives new connection formation in the frontal cortex. This mechanism explains why ketamine can produce noticeable mood improvements within hours, compared to the four to six weeks most antidepressants require.
Who Staffs These Clinics
Staffing varies, but professional guidelines recommend that an anesthesia professional or physician be immediately available during infusions. Many clinics are run by anesthesiologists, psychiatrists, or certified registered nurse anesthetists (CRNAs). The American Association of Nurse Anesthesiology recommends that psychiatric mental health nurses also be part of the treatment team to assess patients’ mental state before and after each session. A well-staffed clinic will have someone qualified to manage both the physical effects of ketamine (particularly cardiovascular changes) and the psychological responses that can occur during treatment.
Cost and Insurance Coverage
IV ketamine for depression is one of the more expensive outpatient mental health treatments available. Individual sessions range from $250 to $1,300, with most clinics charging around $400 to $800 per infusion. A full induction course of six sessions can run $2,400 to $6,000 or more. Because IV ketamine is used off-label for mental health, insurance rarely covers it. Most patients pay entirely out of pocket.
Spravato is the exception. Because it carries FDA approval for treatment-resistant depression and suicidal ideation, major insurers including Blue Cross Blue Shield, Aetna, United, Cigna, Humana, and Tricare often cover it. Approval typically requires prior authorization and documentation that you’ve tried and failed at least two antidepressants. With insurance, copays for Spravato sessions can be as low as $0 to $25. Medicare Part B may cover Spravato in approved settings, and Medicaid coverage is expanding regionally but varies by state.
Who Should Not Use Ketamine
Ketamine temporarily raises blood pressure and heart rate, so people with uncontrolled hypertension, recent heart attacks, significant heart valve disease, or certain types of aneurysms may not be good candidates. These aren’t absolute disqualifications in every case, but they require careful evaluation. People with a history of psychosis are generally advised against ketamine treatment, since the dissociative effects can worsen psychotic symptoms.
Ketamine is a Schedule III controlled substance, meaning it carries some risk of misuse. Clinics are designed to mitigate this by administering the drug on-site under supervision rather than sending patients home with it. Still, the potential for psychological dependence is something to discuss with your provider, especially if you have a history of substance use disorders.