Off-label

IV ketamine infusion

IV (intravenous) ketamine is the route most clinics lead with and the one with the largest research base for depression. Ketamine is FDA-approved as an anesthetic; using infusions for depression, anxiety, PTSD, OCD, or chronic pain is off-label, prescribed at a clinician's discretion.

FDA status
Approved as an anesthetic; psychiatric and pain use is off-label
Session length
About 40 minutes of infusion, plus recovery time
Typical course
Often around six sessions over two to three weeks, then as-needed maintenance
Coverage
Usually self-pay

How an IV session works

After a check-in and baseline vital signs, a small IV line is placed in your arm. A low, sub-anesthetic dose is infused slowly with a pump so staff can adjust or stop it at any time. Blood pressure, heart rate, and oxygen levels are monitored throughout.

Most people feel detached or dreamlike during the infusion. These effects typically fade within an hour or two after it ends. You will need someone to drive you home.

What the evidence shows

Randomized trials have found rapid, short-term improvement in depressive symptoms for many people with treatment-resistant depression, sometimes within hours to days. Benefits often fade without repeat or maintenance sessions, and long-term data are still limited. Evidence for anxiety, PTSD, OCD, and chronic pain is earlier-stage and more mixed.

Editorial note: we describe research findings in general terms. Individual results vary and no clinic can promise an outcome.

Cost and insurance

Because the use is off-label, most insurance plans do not cover IV ketamine for psychiatric conditions. Clinics set their own prices; an initial series commonly totals a few thousand dollars. Ask for a written quote that includes consultation and monitoring fees.

Safety

Ketamine can cause dissociation, sedation, raised blood pressure, nausea, and dizziness, and it can be misused. A licensed prescriber must evaluate your full medical and psychiatric history first, and you should never drive until the next day.

Common questions

Is IV ketamine better than the nasal spray?

They have not been compared head-to-head in large trials. IV allows precise dose adjustment; esketamine nasal spray is the only FDA-approved option for depression and is more often covered by insurance.

Will I be unconscious?

No. Psychiatric infusions use doses well below anesthetic levels. You remain awake, though you may feel detached.

This guide is educational and not medical advice. If you are in crisis, call or text 988.

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