What Happens During a Ketamine-Assisted Psychotherapy Session

Before You Arrive

Your preparation begins well before entering the treatment room. Most clinics require you to fast for at least four hours before ketamine administration — no food, and only clear fluids until two hours prior. This reduces the risk of nausea during your session.

Wear comfortable, loose-fitting clothing. You'll be lying down for extended periods, often with monitoring equipment attached. Avoid anything restrictive around your chest or arms. Remove contact lenses beforehand if you wear them, as your vision may become temporarily altered.

Arrive with a trusted person who can drive you home afterwards. The effects of ketamine can linger for several hours, making driving unsafe. Many people also find having emotional support helpful as they process their experience.

Your therapist will likely schedule preparation sessions in the weeks leading up to your first medicine session. These establish therapeutic rapport, clarify your intentions for treatment, and ensure you feel psychologically ready for the altered state ketamine produces.

The Medicine Session

You'll begin in a comfortable treatment room — typically dimmed, with soft furnishings and calming music available. Your medical team will establish IV access or prepare your chosen route of administration. Sublingual tablets and intramuscular injections are also used, though IV remains most common for precise dosing.

Once ketamine administration begins, you'll notice effects within minutes. Many people describe the onset as a gentle lifting sensation or feeling of weightlessness. Your therapist remains present throughout, offering verbal guidance and emotional support as needed.

The peak experience typically lasts 45 to 90 minutes. During this time, you may experience vivid mental imagery, altered perception of time and space, or a sense of observing your thoughts from outside yourself. Some people report profound insights about their depression or trauma, while others simply experience a peaceful, dreamlike state.

Your vital signs are monitored continuously. The clinical team tracks your blood pressure, heart rate, and oxygen levels, adjusting support as needed. You'll likely feel somewhat detached from your immediate surroundings, but you remain conscious and able to communicate if necessary.

What You Might Experience

The subjective effects vary considerably between individuals and sessions. Many people describe a sense of floating or moving through different mental landscapes. Visual experiences might include geometric patterns, childhood memories, or symbolic imagery related to your therapeutic work.

Emotionally, you might access feelings or memories that feel difficult to reach in ordinary consciousness. Some people report profound emotional releases — crying, laughing, or experiencing intense relief. Others describe a temporary lifting of their depression, offering glimpse of what feeling better might be like.

Physically, expect some disorientation and possibly mild nausea. Your limbs may feel heavy or disconnected. These sensations typically resolve within an hour of the session ending, though you'll likely feel somewhat dreamy or "spacey" for several hours afterwards.

Not everyone has dramatic revelations during the medicine session itself. Some people report that insights emerge gradually over the following days, during integration therapy sessions where you process the experience with your therapist.

Aftercare and Integration

Immediately following your session, you'll rest in the treatment room until the acute effects subside — typically 30 to 60 minutes. Staff will ensure you're steady on your feet and thinking clearly before discharge. Many people feel tired but emotionally lighter.

For the remainder of that day, avoid driving, operating machinery, or making important decisions. Many people prefer quiet activities — gentle walks, journaling, or simply resting. Some experience temporary emotional sensitivity, so having supportive people around can be helpful.

Sleep patterns may be temporarily altered. Some people experience unusually vivid dreams in the nights following treatment. Others report sleeping more deeply than usual. These effects typically normalise within 48 hours.

Integration therapy sessions, scheduled within days of your medicine session, prove crucial for processing insights and emotional material that emerged. Your therapist helps you understand and apply these experiences to your ongoing therapeutic work.

Treatment Course and Timeline

Most KAP protocols involve six to eight medicine sessions spread over two to three months. Initial sessions might be scheduled weekly, then spaced further apart as you progress. Each medicine session is bookended by preparation and integration therapy sessions.

Some people notice mood improvements after their first or second session, though benefits often build gradually. The rapid-acting nature of ketamine means you might experience relief sooner than with conventional antidepressants, but lasting change typically requires the full course plus ongoing integration work.

Maintenance sessions may be recommended every few months, depending on your response and clinical needs. Your treatment team will work with you to determine the optimal frequency and duration based on your individual progress and symptom patterns.

The entire treatment process — from initial assessment through completion of your medicine sessions — typically spans three to six months. This includes time for proper screening, preparation, and integration of your experiences into lasting therapeutic change.