From the intake questions to the two-hour ride home: a realistic walk-through of a first IV ketamine session, including how the dissociative experience actually feels.
Most anxiety about a first ketamine infusion comes from not knowing what the room looks like or what the experience feels like. Here is a realistic walk-through. (This covers IV infusions; esketamine nasal spray sessions follow a similar monitoring routine but a different delivery — see ketamine vs. esketamine.)
Before you're in the chair
A legitimate clinic screens before it infuses. Expect a review of your psychiatric history, current medications, blood pressure, and specific exclusion factors: uncontrolled hypertension, a history of psychosis, active substance misuse, and certain heart conditions are common reasons a clinic will decline or require medical clearance first. If a clinic skips screening and books you immediately, treat that as a red flag — our clinic vetting checklist lists the rest.
Arrive with someone who can drive you home. You will not be allowed to drive after a session, and rideshare drop-off policies vary — clinics generally require a named person picking you up.
The session itself
You settle into a recliner in a dim, quiet room. An IV line goes in, and the ketamine — racemic ketamine, delivered slowly — runs over about 40 to 60 minutes. You stay awake the whole time.
The experience has a distinct arc. Ten to fifteen minutes in, most people feel a floating, dreamlike sensation — the "dissociative" effect that is both the treatment's signature and one of its FDA-labeled risks. Time distorts; sounds seem distant; some people find the experience pleasant, some find it neutral, a minority find it unsettling. It fades quickly once the infusion stops, typically within an hour. If it becomes distressing, say so — staff can slow the rate, and eye masks or music change the texture of the experience considerably.
Blood pressure, oxygen, and alertness are monitored throughout. That monitoring is not decorative: the FDA label for ketamine-based medicines warns of sedation, dissociation, respiratory depression, and elevated blood pressure 1, and it is the reason treatment happens in a clinic rather than at home — see is ketamine safe?.
After the infusion
Most programs observe you for 20 to 60 minutes after the drip stops, then discharge you to your ride. Plan a quiet evening: some people feel tired or mildly foggy into the next day, though many return to normal activities the following morning.
The course, not the session
One infusion is a sample, not a treatment. The standard initial course is around six infusions over two to three weeks, with response typically assessed after several sessions, followed by maintenance on a schedule the clinic sets. Our complete 2026 ketamine guide explains how a course is structured and what it typically costs.
A realistic expectation-setting note
Editorial interpretation: published research describes rapid but variable short-term antidepressant effects for IV ketamine in treatment-resistant depression, with durability depending on the individual and the maintenance plan. No honest clinic can promise a specific outcome — be wary of any that do. And if you are in crisis, call or text 988 for the Suicide & Crisis Lifeline.
Sources
- FDA Prescribing Information for SPRAVATO® (esketamine), revised January 2025: https://www.accessdata.fda.gov/drugsatfda_docs/label/2025/211243s016lbl.pdf. Session details describe commonly reported IV protocols; specifics vary by clinic.
More reporting on patient experience.
This report is educational and is not medical advice. Coverage, availability and eligibility can change; verify details with the named source or your care team.