Who Ketamine Therapy Is For, and Who It Isn't

Most content about ketamine therapy is written to persuade. This one is organized around the more useful question, which is whether it fits your situation, including the cases where the answer is no.

Where the evidence is strongest

Treatment resistant depression. This is the clearest indication. Depression that has not responded to adequate trials of two or more conventional treatments is where the research is most substantial and where ketamine has demonstrated meaningful rapid improvement for a significant proportion of people.

The word adequate matters. A medication stopped after two weeks because of side effects is not a completed trial. Someone who has tried one antidepressant briefly has not established treatment resistance.

Acute suicidal thinking. Ketamine has been studied for rapid reduction of suicidal ideation, and the speed of onset is the relevant feature, since conventional antidepressants take weeks. This is delivered in closely supervised settings and is not a substitute for crisis care.

Emerging areas. PTSD, treatment resistant anxiety, OCD, and substance use disorders all have preliminary research. Preliminary is the accurate description. Providers presenting these as established are ahead of the evidence.

Anyone considering ceremonial ketamine for a condition outside the first two categories should ask specifically what evidence supports it for that indication.

Who tends to be a reasonable candidate

• Adequate trials of conventional treatment without sufficient response
• No contraindicating medical or psychiatric conditions
• Currently stable enough to engage in preparation and integration work
• Willing to do the therapeutic work surrounding the sessions
• Has support available for the day of and after
• Understands this is a course of treatment rather than a single event
• Continuing with existing mental health care rather than replacing it

Within Center assesses against these before recommending treatment rather than after.

Medical contraindications

These are screened for by any legitimate program, and a program that does not ask about them should be declined.

Uncontrolled hypertension. Ketamine reliably raises blood pressure. Uncontrolled hypertension is a genuine cardiovascular risk in this context.

Significant cardiovascular disease. Unstable angina, recent heart attack, certain arrhythmias, aneurysm, or heart failure.

Increased intracranial pressure, or certain neurological conditions.

Pregnancy. Safety is not established.

Severe liver disease, since ketamine is metabolized hepatically.

Untreated thyroid dysfunction, which affects cardiovascular response.

Certain medication interactions, which is why a complete medication list is required rather than a summary.

Psychiatric contraindications and cautions

History of psychosis, or schizophrenia spectrum conditions. Ketamine produces dissociative and perceptual effects that can precipitate or worsen psychotic symptoms.

Active mania or hypomania. Bipolar disorder is not automatically disqualifying, and current mood state and stability matter a great deal. This requires careful assessment rather than a simple yes or no.

Active substance use disorder involving ketamine or dissociatives, and active substance use more broadly requires careful evaluation given abuse potential.

Acute crisis. Someone in immediate danger needs emergency care now, not a scheduled series.

Unmanaged severe dissociative symptoms. For people who already dissociate significantly, a treatment producing dissociation may be a poor fit.

Situations where it is probably premature

You have not tried conventional treatment. For a first episode of depression or anxiety, psychotherapy and first line medication have decades of evidence, lower cost, and fewer requirements. Starting with ketamine skips options that work well for most people.

One medication was tried briefly. Dose optimization or a switch is the conventional next step before concluding treatment resistance.

The underlying diagnosis is unclear. If bipolar disorder, ADHD, a thyroid condition, or sleep apnea has not been ruled out, an accurate diagnosis is the prerequisite.

The problem is circumstantial. Ketamine does not change an abusive relationship, a financial crisis, or an intolerable job. It may make them briefly more tolerable, which is not necessarily helpful.

You cannot engage in integration. Without the surrounding work, the evidence for durable benefit is considerably weaker.

Honest limitations

Effects are often transient. Single sessions rarely produce lasting change, which is why maintenance is usually required. Nobody should present this as a one time fix.

Not everyone responds. A meaningful proportion do not, and no screening currently predicts who will.

It is expensive and frequently not covered. Esketamine in certified settings may be covered by insurance. Off label ketamine often is not, and a full course plus maintenance adds up. Costs should be discussed in total rather than per session.

The research base is younger than the marketing. Trials have generally been shorter and smaller than those behind conventional treatments, and long term outcome data is limited.

It has abuse potential. This is a controlled substance, and take home models without monitoring have drawn regulatory attention for good reason.

Questions worth asking a provider

• What specifically about my history makes me a candidate?
• What would rule someone out, and how do you screen for it?
• What conventional treatments do you expect me to have tried first?
• What does the evidence support for my particular diagnosis?
• What is the total cost of a full course including maintenance?
• What happens if I do not respond?
• How do you coordinate with my current psychiatrist or therapist?

A provider who recommends treatment before asking about your history is selling rather than assessing.

The reasonable position

Ketamine is a real treatment with genuine evidence for specific indications, particularly depression that has not responded to established approaches. It is not a general purpose intervention, it is not appropriate for everyone, and the field contains providers who present it as considerably more established than it is.

Within Center screens for the contraindications above and declines to treat people for whom it is not appropriate, which is the relevant standard when evaluating any program in this area.

If you are considering this, the most useful thing you can do is find a provider willing to tell you the treatment is not right for you.

If you or someone you know is struggling or in crisis, call or text 988 to reach the Suicide and Crisis Lifeline, available 24/7. If there is immediate danger, call 911.