What to Expect After Ketamine Treatment: Recovery, Follow-Up and Warning Signs
How people may feel after a ketamine session, what to do for the rest of the day, how follow-up works, and which symptoms mean you should get help right away.
After ketamine treatment, you rest at the clinic while a clinician monitors you, then go home with a responsible adult. During and soon after a session you may feel detached and your blood pressure may rise; in a trial of injections under the skin, these acute effects resolved within two hours. Do not drive until the next day. Follow-up is built into your plan, and any effect that worsens deserves a call.
What happens right after a ketamine session?
You stay at the clinic for monitored recovery before you leave, and your driver takes you home. Your whole visit, including preparation, treatment and recovery, usually takes roughly 90 minutes to two hours.
The strongest effects tend to pass quickly. In the KADS trial, which gave ketamine as an injection under the skin twice a week for four weeks, acute side effects, including unusual perceptions and increases in blood pressure, resolved within two hours. Recovery time at the clinic exists so those effects can settle while someone qualified is watching.
How you may feel for the rest of the day
Plan for a quiet afternoon or evening. Reviewing studies of ketamine for depression, a 2018 Lancet Psychiatry systematic review counted more psychiatric, cardiovascular and neurological side effects after one dose of ketamine than after placebo, and ketamine's prescribing information lists nausea and vomiting among its adverse reactions and warns that drowsiness can linger.
Rest, drink fluids, and eat something light when you feel ready. Avoid alcohol for the rest of the day; the prescribing information warns that combining ketamine with alcohol or other sedating substances can deepen sedation and slow breathing.
- Do: rest, hydrate, eat lightly and keep plans simple.
- Do not: drive, operate machinery or make major decisions until the next day.
- Call the clinic if an effect is getting worse rather than better, or has not eased by the next day.
Follow-up and reassessment
Follow-up is part of the plan from the start, not an afterthought. Plans are individualized, and the usual shape is several weeks of sessions, then a reassessment of your progress. Follow-up visits can happen by telehealth whenever you are in Florida for the call.
Keep brief notes between sessions about sleep, mood, energy, anything that changed and anything that worried you. Notes make the reassessment conversation more concrete, and that conversation is where the plan changes if treatment is not helping, including a decision to stop. Ketamine therapy does not work for everyone.
Keeping your other care going
Ketamine therapy is meant to sit alongside your ongoing care, not replace it. Keep your appointments with your psychiatrist, therapist or physician, and do not change other medications without talking to the clinician who prescribes them. With your permission, we coordinate with them so everyone works from the same information.
If you see a therapist, it can be useful to bring up anything you noticed during or after a session. Some people find sessions vivid or meaningful and others find them uneventful, and there is no right way to experience them.
Longer-term safety: what to watch for
Most research on ketamine for depression has followed people for weeks rather than years. The same review found that long-term use and safety had rarely been assessed, and it urged bigger studies that repeat doses and follow people for longer.
Ketamine's prescribing information reports that long-term use or abuse has been associated with serious bladder and urinary problems and with liver and bile duct problems. Tell the clinic promptly about pain when urinating, a frequent or urgent need to urinate, blood in your urine, or yellowing of your skin or eyes.
When to get urgent help
Some symptoms should not wait for a scheduled follow-up. Call 911 for chest pain, trouble breathing, fainting, or confusion that is getting worse. If your mood drops sharply or you have thoughts of harming yourself, contact the 988 Suicide & Crisis Lifeline by call or text, or dial 911.
The clinic is open Monday to Friday, 9am to 5pm. Our phone line and website form are for scheduling and routine questions, so outside those hours, or in any emergency, use 988 or 911 rather than waiting for a callback.
Request a consultation
A conversation, not a commitment. Please don't include medical records, diagnosis details, or anything urgent — this form is not monitored for emergencies.
In person or by telehealth
You can be seen both ways. Consultations, planning conversations, and follow-up visits happen in person at our Tampa clinic or by telehealth — whichever works better for you.
Ketamine itself is always administered in person, at the clinic, with a clinician monitoring you throughout. We do not prescribe ketamine for use at home.
Telehealth visits require you to be physically located in Florida at the time of the visit.
How telehealth works here
- Telehealth is available to patients who are physically located in Florida, and the clinicians providing that care hold active Florida licenses.
- Your location is confirmed at the start of every telehealth visit. If you are not in Florida, the visit does not go ahead.
- Ketamine is never prescribed for you to take at home. It is administered only at our clinic, in person, with a clinician monitoring you throughout — a telehealth visit does not change that.
- You are seen in person before any treatment session, because every session happens at the clinic.
- A telehealth visit never guarantees that treatment will be offered, any more than an in-person evaluation does.
- Telehealth is not for emergencies. If you are in crisis or having thoughts of self-harm, call or text 988, or call 911.
Common questions
The acute effects of a session usually pass within hours; in one trial of injections under the skin they resolved within two hours. If you still feel tired or a bit off the next day, take it easy. Call the clinic if an effect is getting worse instead of better, and call 911 if it feels like an emergency.
Not on the day of treatment. A responsible adult drives you home, and you should wait until the next day before driving or operating machinery. Ketamine's prescribing information advises waiting 24 hours because drowsiness and residual effects can persist after a dose, even when you feel alert.
Plan not to. Keep the rest of the treatment day free of work, important decisions and anything that needs your full concentration. Treat session days as rest days and save demanding tasks for later in the week, when the effects of the medicine have had time to clear.
Shifts in mood or strong feelings can come up during or after treatment, and they are worth mentioning to the clinic and to your therapist. If your mood drops sharply, or you have thoughts of harming yourself, do not wait for a follow-up: call or text 988, or call 911.
Plans are individualized. A typical plan involves a series of sessions over several weeks and then a reassessment, where you and the clinician look at how you have been doing and decide together whether to continue, change the schedule or stop. Ketamine therapy does not help everyone, and stopping is a legitimate outcome.
Sources & further reading
- Efficacy and safety of a 4-week course of repeated subcutaneous ketamine injections for treatment-resistant depression (KADS study) (Loo et al., 2023) — British Journal of Psychiatry, via PubMed. Accessed 2026-11-02.
- Side-effects associated with ketamine use in depression: a systematic review (Short et al., 2018) — The Lancet Psychiatry, via PubMed. Accessed 2026-11-02.
- Ketamine hydrochloride injection: FDA prescribing information (label revised March 2026) — U.S. Food and Drug Administration. Accessed 2026-11-02. Sections 5.6 and 5.7 (hepatobiliary and urological complications), 5.9 (CNS depressants), 6 (adverse reactions), 17 (driving).
- 988 Suicide & Crisis Lifeline — Substance Abuse and Mental Health Services Administration. Accessed 2026-11-02.
Links point to external organizations. Clear Ketamine Therapy does not control their content.
Reviewed by Editorial team. Last reviewed 2026-11-02. Educational information only — not medical advice or a substitute for care from your own clinicians.
Keep reading
- Preparing for TreatmentWhat to sort out before a ketamine session, and why: fasting, your medications, a ride home, what to wear, and how to plan the rest of your day.
- What to ExpectA plain-language walkthrough of the full treatment process at our Tampa clinic — the evaluation, the sessions themselves, and the follow-up — including the parts that vary from person to person.
- Safety & Side EffectsThe full safety picture: common short-term side effects, who should not receive ketamine, the FDA's compounded-ketamine warning, and our monitoring practices.
- How Ketamine WorksWhat is established about how ketamine acts in the brain, which explanations for its effect on depression are still hypotheses, and what that means if you are considering treatment.
Talk with our clinical team
A consultation is a conversation, not a commitment. Ask questions, share what you are comfortable sharing, and learn whether ketamine therapy may be worth considering for you.
Not for emergencies — call or text 988 or 911 if you are in crisis.