The most common reason patients hesitate before calling a ketamine clinic is not skepticism about whether ketamine works — it is uncertainty about what “doing ketamine therapy” actually involves. Six sessions over two to three weeks sounds abstract until you understand what each session contributes and why the protocol is structured the way it is. At Scottsdale Ketamine Clinic, we believe that transparency about the treatment process is part of good care, and this is our attempt to answer the protocol questions before you have to ask them.
Why Six Sessions and Not One
Ketamine’s rapid antidepressant effects are one of the things that makes it genuinely different from conventional antidepressants. Where SSRIs and SNRIs typically require weeks to produce any noticeable effect, ketamine can begin reducing depressive symptoms within hours of a single infusion (National Institutes of Health, 2024). That speed is meaningful. But a single infusion, while sometimes producing notable early relief, does not produce the sustained response that most treatment-resistant depression patients need.
The reason for this is neuroplasticity. Ketamine works in part by stimulating the synthesis of BDNF — brain-derived neurotrophic factor — a protein that supports the growth and function of brain cells and is essential for forming new neural connections (National Center for Biotechnology Information). Repeated infusions allow BDNF expression to build cumulatively, strengthening the neuroplastic changes that make antidepressant effects more durable. Research on both single and repeated ketamine infusions confirms that a series of infusions extends remission periods meaningfully compared to a one-time dose (American Journal of Psychiatry). The six-session protocol reflects what the clinical evidence supports as a foundational course of treatment.
Sessions One and Two: Establishing the Baseline
Your first infusion is also a clinical data point. Before the session begins, our team — including Jenice Hughes, CRNA, our board-certified nurse anesthetist — conducts a brief pre-infusion review to confirm your current status, note any changes since your intake evaluation, and ensure you are physically ready to proceed.
The first session lasts approximately 45 to 60 minutes. You will be in a private, comfortable treatment room and monitored continuously throughout. During the infusion, you may notice a sense of deep relaxation, mild perceptual changes, or a feeling of mild detachment from your immediate surroundings. These effects are temporary and typically begin fading shortly after the infusion ends. The most commonly reported side effects are mild nausea and dizziness, both brief and manageable in a clinical setting (National Institutes of Health).
Your second infusion, usually scheduled a few days after the first, allows our team to assess your initial response and refine the approach if needed. Some patients notice mood changes after the first session; others begin to feel something shift during the second. We do not set expectations around a specific timeline because individual responses vary, and we take those variations seriously rather than working from a script.
Sessions Three and Four: Building the Response
This is typically where the cumulative nature of the protocol becomes most apparent. Research on repeated ketamine sessions shows that multiple infusions produce compounding antidepressant benefits — the effects are not simply repeated from session to session, they build on each other as neuroplastic changes accumulate (National Center for Biotechnology Information).
For many patients, sessions three and four bring the clearest subjective shift. This is not universal — some patients notice changes earlier, and some later — but it is where the protocol’s architecture begins to show its clinical logic. We check in with you at each visit about what you are noticing: changes in mood, sleep, motivation, the quality of your inner experience. This ongoing assessment is how we track your response and determine how the final sessions should be calibrated.
Between sessions, you are not left to manage on your own. Our team is available for questions, and we encourage patients to maintain contact if something unexpected comes up between appointments. The infusion room is only part of the treatment — the clinical relationship around it matters too.
Sessions Five and Six: Completing the Foundation
The final two sessions of the initial series are not simply more of the same. By this point, our team has a clear picture of how your nervous system is responding to the protocol. Sessions five and six are delivered with that knowledge, and the goal shifts from establishing a response to deepening and anchoring it.
After your sixth infusion, we conduct a post-series evaluation. We discuss the changes you have noticed, how your symptoms have shifted, and what the data from your sessions suggests about next steps. For some patients, the initial series produces meaningful, sustained relief with no immediate need for further treatment. For others, the response is strong but begins to fade after several weeks, which is where maintenance infusions become relevant.
What Comes After the Initial Series
Maintenance infusions — scheduled every few weeks or months depending on your individual response — are designed to preserve and extend the benefit of the initial protocol. The American Journal of Psychiatry research on repeated and maintenance ketamine infusions documents that this approach extends remission periods for treatment-resistant depression patients who respond to the initial course.
We do not approach maintenance as a default. After your post-series evaluation, we discuss your response honestly and make recommendations based on what the evidence suggests for your specific presentation. Patients who decide to pursue maintenance infusions work with our team to find a spacing interval that keeps their symptoms managed without over-treatment. Results vary by individual, and the maintenance plan reflects that. You can review more about the full scope of our ketamine therapy approach — including what distinguishes our protocol from other providers — before your first appointment.
The Financial Reality
IV ketamine infusions for depression are off-label — they are not FDA-approved for this indication specifically, and most insurance plans do not cover them. We are direct about this because patients deserve to know the financial picture before they make any decisions. We provide documentation that patients can use to pursue out-of-network reimbursement through their insurance plan, and our team covers the full cost conversation before treatment begins.
We understand that cost is a real factor in whether people can access care. If you have questions about what the six-session protocol involves financially, ask them during the consultation. We will give you complete information, not a vague estimate.
Protocol Transparency as Part of Care
One of the consistent gaps we see in how ketamine clinics present their services is the absence of clear protocol information. Patients are told that ketamine may help, that sessions involve an infusion, and that results vary. All of that is true — but it does not answer the practical question of what a patient is actually signing up for. We believe that knowing the structure of treatment is part of what allows a person to make a real decision. Discuss your options with your provider, and let the protocol be something you understand before you walk into the treatment room, not something you piece together after the fact. Our ketamine FAQs are a good starting point for questions you may not yet know how to ask.
Frequently Asked Questions
What if I feel significant relief after session one or two — do I still need all six? Early relief is encouraging, but it does not mean the protocol should stop. The six-session series is designed to build neuroplastic changes that produce durable outcomes, and early symptom improvement does not indicate that the underlying neural changes are complete. Stopping early is a decision made in consultation with your provider based on your full clinical picture — not on how good you feel after a single session.
Can I drive myself to and from infusion appointments? No. Driving is not permitted on infusion days. The dissociative effects of ketamine, while temporary, impair your ability to drive safely. You will need to arrange transportation for each session. This is a non-negotiable safety requirement, not a suggestion.
How long after the sixth session before I know if the protocol worked? Most patients have a clear sense of the protocol’s effect by the post-series evaluation, which happens shortly after session six. Some effects continue to develop in the days following the final infusion as neuroplastic changes consolidate. We assess outcomes at the evaluation and discuss what the findings suggest for next steps.
Will I need to take time off work for sessions? Most patients return to their normal routines the day after an infusion. The session itself lasts 45 to 60 minutes, and you will need the remainder of that day to rest and allow the acute effects to resolve. You should not schedule demanding professional commitments on infusion days, but the treatment is generally compatible with maintaining a regular work schedule around session days.
What if the six-session protocol does not produce the response I was hoping for? Not every patient achieves the response they are looking for from the initial series, and we do not pretend otherwise. At the post-series evaluation, we review your response honestly and discuss what the data suggests. That conversation may include adjusting maintenance frequency, considering whether additional sessions are appropriate, or exploring complementary approaches. What it will not include is pressure to continue treatment without a clear clinical rationale.
Key Takeaways
- The standard ketamine protocol for treatment-resistant depression involves six infusions delivered over two to three weeks, reflecting the clinical evidence that repeated sessions produce more durable outcomes than single-dose treatment.
- Ketamine promotes neuroplasticity through BDNF synthesis, and the cumulative effect of multiple infusions builds and strengthens antidepressant changes that a single session alone does not produce.
- Sessions one and two establish the baseline; sessions three and four typically reflect the clearest cumulative shift; sessions five and six deepen and anchor the response.
- Maintenance infusions, spaced every few weeks or months, are available for patients who benefit from the initial series and want to sustain those results.
- IV ketamine for depression is off-label and not typically covered by insurance; documentation is available for out-of-network reimbursement, and cost is discussed before treatment begins.
If you have been living with treatment-resistant depression and the standard options have not been enough, the six-session protocol at Scottsdale Ketamine Clinic is a structured, evidence-based approach designed specifically for that clinical picture. Results vary by individual, and we do not make promises about outcomes — but we do make a commitment to transparency about what treatment involves at every step. Call our Scottsdale clinic at 480-613-3226 or our Phoenix location at 480-590-6154 to schedule a free consultation and ask the questions you have been holding.
References
National Institutes of Health (2024). New Hope for Rapid-Acting Depression Treatment. https://www.nimh.nih.gov/news/science-updates/2024/new-hope-for-rapid-acting-depression-treatment
National Center for Biotechnology Information. Ketamine and Neuroplasticity. https://pmc.ncbi.nlm.nih.gov/articles/PMC8190578/
American Journal of Psychiatry. Single, Repeated, and Maintenance Ketamine Infusions for Treatment-Resistant Depression. https://psychiatryonline.org/doi/10.1176/appi.ajp.2018.18070834
National Center for Biotechnology Information. Repeated Ketamine Sessions for Treatment-Resistant Depression. https://pmc.ncbi.nlm.nih.gov/articles/PMC6236511/
National Institutes of Health. Side Effects Mild and Brief from Single Antidepressant Dose of Intravenous Ketamine. https://www.nih.gov/news-events/news-releases/side-effects-mild-brief-single-antidepressant-dose-intravenous-ketamine
Medical Disclaimer
The information in this blog is for educational purposes only and does not constitute medical advice. IV ketamine infusion therapy for depression should only be pursued under the supervision of a licensed medical provider familiar with your complete medical and psychiatric history. Individual results vary. Not all patients are candidates for ketamine therapy. If you are experiencing a mental health crisis or thoughts of self-harm, please call or text 988 to reach the Suicide and Crisis Lifeline or go to your nearest emergency room.
