If you are considering IV ketamine therapy, one of the most practical questions is also one of the most common: how many infusions will I actually need? A lot of practices are vague about this, so here is a clear, honest answer from a physician-led practice in Greenwood, Indiana that has completed more than 5,000 infusions. Knowing what to expect helps you plan your time, your budget, and your hope realistically.
The typical starting protocol
For most people beginning IV ketamine therapy for depression, anxiety, or PTSD, the standard starting course is six infusions over about two to three weeks. This initial series is the foundation, and it is designed so each session builds on the one before it. Most people receive their infusions a few days apart during this window, which allows the treatment to establish momentum rather than being spread too thin.
Why it is a series and not a single visit
People sometimes hope for a one-time fix, and it is worth being straight about why that is not how ketamine works. Research suggests IV ketamine supports neuroplasticity, the brain’s ability to form new, healthier connections. That process builds with repetition. A helpful way to think about it is less like flipping a switch and more like doing reps: each infusion reinforces the progress of the last. This is why the series matters, and why finishing the full initial course gives you the best sense of how ketamine works for you.
How quickly you will know if it is working
One of the advantages of IV ketamine over traditional antidepressants is speed of feedback. Rather than waiting four to six weeks, many people notice a shift within the first week or two of starting their series. That early signal does not replace completing the full course, but it does mean you are not committing to a long stretch of uncertainty before you have any indication of whether it is helping.
What happens after the initial series
After completing the initial six infusions, the path forward is individual. Some people benefit from periodic maintenance infusions to hold and extend their progress, spaced weeks or months apart depending on how they respond. Others need very little ongoing treatment. There is no single formula, and a good practice will not push endless sessions on you. At AlphaOmega Wellness, maintenance is guided by how you are actually doing, and we build that plan with you rather than for you. Ongoing support between infusions, including our brain health community, can also help results last.
Your plan should be yours
The honest answer to how many infusions you need is: usually six to start, then it depends on you. Your history, your response, and your goals all shape the plan. The best way to get a clear picture for your situation is a free consultation with our Brain Health Specialist, who walks you through what to realistically expect. If you decide to move forward, our provider reviews your medical suitability before treatment begins. You can also read more about whether IV ketamine therapy is worth it and what it costs in our related guides.
Frequently Asked Questions
How many ketamine infusions are in a typical course?
The typical starting course of IV ketamine therapy is six infusions over about two to three weeks. This initial series is designed so each session builds on the previous one, and completing it gives the clearest sense of how ketamine works for you.
Why do you need more than one ketamine infusion?
Research suggests IV ketamine supports neuroplasticity, and that benefit builds with repetition. A series works more like doing reps than flipping a switch, with each infusion reinforcing the progress of the last, which is why a single infusion is generally not enough.
How soon will I know if ketamine is working?
Many people notice a shift within the first week or two of starting their infusion series, rather than the four to six weeks traditional antidepressants can take. Completing the full initial course gives the most complete picture.
Do I need maintenance infusions after the first series?
It depends on the individual. Some people benefit from periodic maintenance infusions spaced weeks or months apart to hold their progress, while others need very little. Your plan is guided by how you are actually responding.
Want a plan mapped to your situation? Call our Greenwood, Indiana office at 317-300-4091 or schedule a free consultation today.