Ketamine Treatment Eligibility Questions: Who Qualifies?

Eligibility for ketamine therapy depends on three things: your diagnosis and treatment history, the results of a medical and psychiatric screening, and whether any contraindications show up during that screening. There is no single national eligibility standard, because most ketamine treatment for mental health is prescribed off-label. Only esketamine (Spravato), a nasal spray form of ketamine, has approval from the U.S. Food and Drug Administration (FDA) for a specific use: treatment-resistant depression in adults who have already tried at least two other oral antidepressants without adequate relief. Every other use, including intravenous (IV) or intramuscular (IM) ketamine for depression, anxiety, or post-traumatic stress disorder (PTSD), is prescribed off-label at a clinician's discretion.

Because standards vary by provider, the real work of figuring out whether you qualify happens during an intake screening. This article walks through what that screening covers, which conditions and health factors typically qualify or disqualify someone, and the questions you should be ready to answer, and to ask in return.

What Determines Whether You Qualify

A prescriber weighs four factors when deciding whether ketamine therapy is appropriate for you: the diagnosis being treated, your prior treatment history, your current medical status, and the setting where treatment would happen.

Diagnosis and evidence strength

Depression, specifically treatment-resistant depression, has the strongest published evidence for ketamine and esketamine among the conditions clinics commonly treat. Anxiety disorders, PTSD, and some chronic pain conditions have smaller but growing bodies of research, largely from academic studies rather than FDA-reviewed trials. According to the National Institute of Mental Health (NIMH), ketamine and esketamine can produce rapid symptom relief in some patients with treatment-resistant depression, though researchers still don't fully understand how long benefits last without ongoing sessions. If your primary concern is a condition with thinner evidence, a responsible provider should say so plainly rather than implying the same certainty as for depression.

Treatment history

For esketamine specifically, the FDA-approved label requires that you have already tried at least two other oral antidepressants at adequate doses without sufficient improvement. That criterion is what "treatment-resistant" means in this context. Off-label IV or IM ketamine providers often ask about prior treatment history too, but they are not bound by the same fail-first requirement, so practices vary.

Medical and psychiatric status

This is where most disqualifying or caution flags come from, covered in detail below. Cardiovascular history, active substance use, and a personal or family history of psychosis are the areas prescribers scrutinize most closely.

Before your first appointment, it helps to review questions to ask before ketamine therapy so you walk in prepared rather than reactive.

Contraindications and Factors That Complicate Eligibility

Certain findings during screening can rule out ketamine therapy entirely, while others simply mean closer monitoring or a different setting. Uncontrolled hypertension is a common concern because ketamine can raise blood pressure and heart rate during a session; a provider will typically want your blood pressure managed and stable before starting. A history of psychosis, schizophrenia, or an active manic episode is another significant flag, since dissociative effects from ketamine can worsen psychotic symptoms in vulnerable patients.

Active, untreated substance use disorder is treated cautiously by most clinics, though policies differ: some providers require a period of stability or coordinate with an addiction specialist, while others decline treatment outright. Pregnancy and breastfeeding are generally treated as reasons to avoid ketamine therapy, since safety data in those populations is limited. Certain cardiac conditions, uncontrolled hyperthyroidism, and a history of aneurysm can also raise concern because of ketamine's cardiovascular effects.

Setting matters here too. At-home telehealth ketamine programs typically screen out patients with significant cardiovascular risk or a history of severe dissociative reactions, because there's no on-site clinical staff to manage an adverse event in real time. If your history includes any of these factors, an in-clinic setting with monitoring may be more appropriate than at-home care. You can compare what each setting screens for in how to evaluate an at-home ketamine provider.

Questions to Ask During Your Own Screening

Eligibility screening is a two-way conversation. Beyond answering the provider's questions, ask them to explain their reasoning: which condition are they treating, what evidence supports it for your specific diagnosis, and what would make them refer you elsewhere instead of treating you. It's reasonable to ask how they'd handle a side effect or a bad reaction, and what their criteria are for stopping treatment if it isn't working. If you're setting goals for the course of treatment, review questions to ask about ketamine treatment goals at a first consultation so you and the prescriber define success the same way from the start.

It's also worth confirming who is actually reviewing your intake. Ask whether a licensed physician, nurse practitioner, or psychiatric provider personally reviews your history, not just an intake coordinator, and check how to verify a ketamine provider's medical license before your first appointment.

If You Don't Qualify Right Now

Not qualifying today doesn't necessarily mean never. Uncontrolled blood pressure, active substance use, or an unstable psychiatric episode are often addressable conditions; a provider may re-evaluate you once those are managed. If ketamine isn't appropriate for your situation, ask what alternatives exist, including standard antidepressants, and review how ketamine compares to other options in ketamine vs. antidepressants or generic ketamine vs. Spravato if you're deciding between forms. Cost is also worth understanding early, since eligibility and insurance coverage often intersect; see ketamine cost and insurance for typical ranges.