The short version: Ketamine-assisted psychotherapy (KAP) pairs the medicine with psychological support before, during, and after a session, which sets it apart from infusion-only clinics. Good preparation (medical screening, clear intentions, a calm recovery environment) and integration afterward shape how much you get from it. It isn’t a first-line treatment, and people with certain heart or psychotic conditions need extra screening.
I remember a client who assumed a ketamine-assisted session would feel identical to the infusion she’d had at a pain clinic years earlier. The two experiences turned out to be very different, and the difference is most of what this article is about.
Living with chronic pain wears people down, especially when traditional treatments haven’t provided adequate relief. If you’re considering ketamine-assisted therapy as a next step, good preparation shapes both your experience and your outcomes.
Understanding Ketamine-Assisted Therapy for Chronic Pain
Ketamine-assisted psychotherapy (KAP) combines ketamine, developed initially as an anesthetic, with psychotherapeutic support to address various conditions, including chronic pain. Unlike traditional ketamine infusions that focus solely on the medication’s biological effects, KAP integrates psychological support before, during, and after ketamine administration to enhance and extend the benefits. That integration is the whole difference, and it’s the part infusion-only clinics leave out.
Research shows that ketamine works differently than traditional pain medications. It primarily blocks N-methyl-D-aspartate (NMDA) receptors in the brain, which play a key role in central sensitization, the process that amplifies pain signals and contributes to chronic pain conditions. For conditions like complex regional pain syndrome (CRPS), phantom limb pain, and mixed neuropathic pain, ketamine has shown promise as a longer-term option, particularly when other approaches have failed.
Recent studies also point to ketamine’s potential for addressing the depression that often accompanies chronic pain. A preliminary study of ketamine-assisted psychotherapy for patients with both chronic pain and major depressive disorder found that all participants showed improvements in symptom severity by the end of treatment. That’s an encouraging early signal from a small study, not a guarantee.
A larger picture is also coming into focus. A 2025 Cleveland Clinic study of more than 1,000 chronic pain patients found low-dose ketamine infusions were safe and associated with improvements in pain interference, depression, and physical function lasting up to six months. The broader research remains mixed, which is exactly why preparation and honest expectations matter.
Before Your First Appointment: Medical Considerations
Initial Assessment
Your work begins with a comprehensive assessment. Your therapist will gather information about your medical history, mental health, current medications, substance use, and any previous experiences with psychedelics or ketamine. This helps determine whether ketamine therapy is appropriate for you and allows your treatment plan to be tailored.
Be prepared to discuss:
- Your complete pain history, including duration, intensity, and location
- Previous pain treatments and their effectiveness
- Current medications and supplements
- Mental health history, especially any experiences with depression or anxiety
- Substance use history
- Any history of psychotic disorders or cardiovascular issues
Medication Considerations
Some medications and substances may interact with ketamine. Disclose everything you’re taking, including:
- Antidepressants
- Anti-anxiety medications
- Blood pressure medications
- Pain medications
- Recreational drugs and alcohol
Ketamine can interact with a range of prescription and over-the-counter medications. In particular, those taking clarithromycin or consuming grapefruit juice may experience more pronounced effects.
Mental and Emotional Preparation
Setting Intentions
An important part of preparation involves working with your therapist to clarify your intentions and goals. This includes exploring what you hope to gain and identifying specific areas to focus on.
For chronic pain patients, intentions might include:
- Exploring your relationship with pain
- Understanding how pain has affected your identity and relationships
- Discovering new perspectives on managing pain
- Finding emotional relief from the burden of chronic suffering
- Addressing depression or anxiety related to your pain condition
Managing Expectations
While many patients experience meaningful benefits, it’s important to keep realistic expectations. Research on ketamine for chronic pain shows varied results, and the experience differs for each person. A 2014 review found that ketamine can produce strong analgesia in neuropathic pain states, but that results vary among individuals. Some patients experience quick relief; others notice gradual improvement over multiple sessions, and some don’t respond.
Addressing Anxiety About the Experience
It’s completely normal to feel anxious about trying ketamine therapy, especially given its psychoactive effects. Your preparation sessions will include techniques to help manage that apprehension, such as relaxation practices, grounding, and breathing exercises you can carry into the session itself.
Practical Preparation Steps
Before Your Session
To set yourself up well:
- Arrange for someone to drive you home afterward
- Wear comfortable, loose-fitting clothing
- Avoid eating for about 4 hours before your appointment (or follow your provider’s specific guidelines)
- Stay hydrated, but avoid drinking large amounts of water immediately beforehand
- Bring items that provide comfort, such as a favorite blanket or eye mask
- Consider a playlist of calming music if your provider allows personal music
Creating a Supportive Environment at Home
After your session, you’ll want to return to a peaceful environment:
- Prepare your home beforehand: clean up, change the sheets, stock easy-to-prepare foods
- Clear your schedule for the rest of the day
- Minimize external stressors and responsibilities
- Keep comforting items handy (favorite teas, blankets, journals)
During the Session: What to Expect
The ketamine experience varies with dosage and administration method. You may receive ketamine via intravenous infusion, intramuscular injection, or nasal spray, depending on your provider’s protocol. Some clinics also use sublingual lozenges.
The psychoactive effects typically begin within minutes and may include:
- Sensory changes (colors may seem brighter, sounds more distinct)
- A non-ordinary state of consciousness, often with a sense of detachment from your body
- Changes in perception of time and space
- Emotional releases
- Insights or new perspectives on personal issues
You’ll sometimes hear this state called “dissociative.” That label comes from ketamine’s history as an anesthetic and describes its effects on the body, not its psychological meaning. I avoid the term in a therapy context because it gets confused with traumatic dissociation, which is a different thing. What you’re likely to experience is closer to a shift in consciousness than a break from it.
Your therapist will remain present throughout to provide support and guidance. Where an infusion-only clinic focuses primarily on the biological effects, KAP adds the therapeutic support that helps you process and integrate what comes up.
Integration: Making the Most of What Comes Up
Preparing for a KAP session is only the first step; integration afterward matters just as much. Additional psychotherapy after ketamine sessions helps you make sense of what surfaced and put any insights to use.
Effective integration practices include:
- Attending scheduled integration sessions with your therapist
- Journaling about your experiences and insights
- Practicing mindfulness or gentle breathing exercises
- Making gradual, values-based changes rather than dramatic ones
- Talking with supportive friends or family, if that feels right
- Joining support groups for chronic pain
Potential Side Effects and How to Manage Them
At lower doses, ketamine therapy is generally safe and well-tolerated. Still, it can have side effects, including nausea, dizziness, increased heart rate and blood pressure, and a temporary altered state that some people find disorienting. Most resolve within hours.
To manage them:
- Communicate openly with your provider about what you’re experiencing
- Use the grounding techniques practiced during preparation
- Use anti-nausea medication if prescribed
- Stay hydrated after your session
- Rest as needed
If you have an underlying heart condition, consult your medical team before considering ketamine therapy, since the cardiovascular effects could affect you more significantly.
Is Ketamine-Assisted Therapy Right for You?
Ketamine therapy isn’t typically a first-line treatment for chronic pain, but it may be appropriate when other strategies haven’t worked. It tends to work best for certain types of pain, including:
- Neuropathic pain (nerve pain)
- Complex regional pain syndrome (CRPS)
- Fibromyalgia
- Phantom limb pain
- Treatment-resistant depression alongside chronic pain
Conclusion
Preparing for ketamine-assisted therapy involves both practical and psychological work. Understanding the process, setting clear intentions, creating a supportive environment, and committing to integration all help you make the most of it. Ketamine therapy is one component of a comprehensive pain management approach, not a replacement for the rest of your care, so work closely with your healthcare providers to fit it alongside physical therapy, mindfulness, and other strategies.
If you’re considering ketamine-assisted therapy for chronic pain, reach out to talk about whether it might fit your situation. I specialize in helping patients navigate chronic pain with evidence-based, psychologically supported approaches.
Frequently Asked Questions
What’s the difference between ketamine infusions and ketamine-assisted psychotherapy?
Ketamine infusions deliver the medicine and focus on its biological effects. Ketamine-assisted psychotherapy (KAP) wraps that same medicine in psychological support: preparation beforehand, a therapist present during the session, and integration work afterward. The medicine is similar; the therapeutic container around it is what differs, and it’s a meaningful difference for many people.
What does a ketamine session actually feel like?
Effects usually begin within minutes and can include brighter senses, an altered sense of time and space, a feeling of detachment from the body, emotional release, and new perspectives on personal issues. Intensity depends on dose and route. Many people find it more like a shift in consciousness than a loss of control, especially with a therapist present.
How many sessions does it usually take?
There’s no fixed number. Some people notice relief quickly; others improve gradually over a series of sessions, and some don’t respond. Your provider will tailor a plan and reassess as you go rather than committing you to a set course upfront.
Is ketamine-assisted therapy safe for chronic pain?
At the low doses used for pain and mental health, ketamine is generally safe and well-tolerated, with side effects like nausea, dizziness, or a temporary altered state that resolve within hours. It requires proper medical screening, especially for heart conditions or a history of psychosis, and it’s used as part of a broader pain plan rather than on its own.
Want to talk about whether KAP fits your situation? Get in touch.
Peter H. Addy, PhD, LPC, LMHC is a Portland-based licensed psychotherapist specializing in psychedelic-informed and harm-reduction psychotherapy, ketamine-assisted psychotherapy, and chronic pain. His research background includes postdoctoral work at Yale School of Medicine on psychedelic substances. Learn more about my practice →
