Anxiety disorders are the most common mental health condition in the United States, yet a significant portion of people who seek treatment do not achieve adequate relief from conventional medications and therapy alone (Mayo Clinic). Ketamine’s reputation is most often tied to depression — particularly treatment-resistant depression — but clinical evidence supports its effectiveness in reducing anxiety symptoms as well, including in patients who have not responded to standard approaches (National Institutes of Health). For patients living with anxiety that has not responded to first- or second-line treatments, the research on ketamine is worth understanding directly.
How Anxiety Works in the Brain
Anxiety disorders — a category that includes generalized anxiety disorder, social anxiety disorder, panic disorder, and others — involve dysregulation of the brain’s fear and threat-response systems. According to the Mayo Clinic, anxiety disorders are characterized by excessive fear, persistent worry, and physical symptoms that are disproportionate to the actual threat present. These are not simply habits of thought. They reflect measurable differences in how the brain processes threat, regulates arousal, and tolerates uncertainty.
The amygdala, which signals danger and initiates the fear response, tends to be hyperreactive in anxiety disorders. The prefrontal cortex, which is responsible for evaluating context and moderating that fear response, has reduced regulatory influence over the amygdala. The result is a system that fires alarm signals too readily and cannot quiet them efficiently. Standard medications for anxiety — including SSRIs (selective serotonin reuptake inhibitors), SNRIs (serotonin-norepinephrine reuptake inhibitors), and benzodiazepines — address some aspects of this dysregulation, but they do not work for everyone, and they carry their own limitations.
Anxiety and depression also share substantial neurobiological overlap. Research confirms a strong bidirectional relationship between the two conditions — each increases the likelihood of the other, and they frequently co-occur (American Journal of Psychiatry). This overlap matters clinically, because treatments that address the shared neurobiological mechanisms can sometimes relieve symptoms of both simultaneously. Ketamine is one of those treatments.
What the Research Shows
Clinical evidence supports ketamine’s effectiveness in rapidly reducing anxiety symptoms in patients who have not found adequate relief through conventional treatments (National Institutes of Health). The mechanism is distinct from that of SSRIs and SNRIs. Rather than acting on serotonin or norepinephrine, ketamine acts on NMDA receptors — a subtype of glutamate receptor that plays a central role in synaptic plasticity and emotional regulation.
By modulating the glutamate system, ketamine appears to reduce the hyperreactivity of fear circuits and promote neuroplasticity — the brain’s capacity to form and reorganize neural connections. This may allow the overactive threat-response patterns characteristic of anxiety disorders to become less rigid over time. Research on the relationship between anxiety and depression suggests that ketamine’s rapid mechanism of action may produce benefits across both symptom domains in patients who carry both conditions, which is common in clinical practice. To learn more about the evidence behind this approach, explore our ketamine therapy research articles.
The speed of ketamine’s effects is clinically significant. Standard antidepressants and anxiolytics typically require weeks of consistent dosing before patients notice benefit, and during that window symptoms continue. Ketamine can produce measurable relief in hours to days for some patients — which matters particularly for those who have cycled through multiple medication trials without sustained improvement.
Who May Be a Candidate
Ketamine is not a first-line treatment for anxiety. At Nova Health Recovery, we consider ketamine therapy for anxiety patients who have not responded adequately to standard treatments — meaning they have completed reasonable trials of established medications and, in many cases, evidence-based therapy, without achieving sufficient relief. Patients with both anxiety and depression, which is a common combination, may benefit from ketamine’s effects on both symptom clusters.
Dr. Christopher Sendi, M.D., is board certified in addiction medicine, obesity medicine, internal medicine, emergency medicine, and pain management, with more than 21 years of clinical experience. Every patient evaluation at our practice includes a thorough review of prior treatment history. We look at what was tried, at what doses, for how long, and what the response was — because that history shapes what comes next. We do not recommend ketamine therapy without that clinical foundation.
Ketamine is not appropriate for everyone. Patients with certain psychiatric histories, active substance use disorders (with some exceptions given Dr. Sendi’s specialization in addiction medicine), or specific medical conditions may not be candidates. The evaluation process is where those determinations are made. We discuss all of this openly before any treatment is recommended.
IV Ketamine and At-Home Options for Anxiety
For patients who proceed with ketamine therapy, we typically begin with an IV infusion series — four to six infusions administered twice a week over two to three weeks. Each clinic visit runs approximately 90 to 120 minutes, with the active infusion portion lasting around 40 minutes. Ketamine produces dissociative effects during infusion, and patients are required to have a driver for every in-clinic visit. We monitor patients throughout each session.
Patients who respond well to the initial series and reach a stable clinical baseline may be candidates for at-home ketamine therapy as a continuation option. This includes compounded oral troches — tablets absorbed under the tongue — or a compounded nasal spray, used on a schedule individualized to each patient’s weight and condition. These are different formulations from SPRAVATO® (esketamine), which is an FDA-approved intranasal product available only through certified clinical settings. The at-home options we prescribe are compounded racemic ketamine intended for maintenance, not for replacing the initial in-clinic phase.
Addressing Cost and the Concern About Starting
We hear two concerns regularly from patients considering ketamine therapy for anxiety. The first is cost. Nova Health Recovery does not accept insurance directly, but we can provide a SuperBill — an itemized treatment receipt — that you may submit to your insurer for potential reimbursement under out-of-network benefits. Whether and how much your plan covers will depend on your specific policy, and we encourage you to ask your insurer in advance. Our team is available at 703-952-1876, 24 hours a day, to talk through these logistics before you commit to anything.
The second concern is fear of the medication itself. Ketamine’s associations with recreational use lead some patients to approach it with significant hesitation. Clinical ketamine therapy is a different context entirely — the dose, delivery method, setting, and monitoring are all structured to support a therapeutic outcome, and patients are never left unobserved during infusion. Many patients who arrive skeptical leave their first session with a clearer understanding of what the clinical experience actually involves. We have that conversation openly during the consultation process, and we do not pressure anyone toward a treatment they are not comfortable with. Patient autonomy matters here, and the right treatment is one you have chosen with full information. Results vary by individual, and no outcome is guaranteed.
Frequently Asked Questions
Can ketamine help with anxiety if I also have depression? Yes — and the combination is common. Anxiety and depression frequently co-occur and share neurobiological mechanisms, including glutamate system dysregulation. Research supports ketamine’s effectiveness across both symptom domains for patients who carry both conditions. Your evaluation will assess the full clinical picture, not just the primary diagnosis on paper.
Is ketamine for anxiety the same as taking an anxiety medication daily? No. Ketamine is administered in structured sessions — not as a daily oral medication — and acts through a different neurochemical mechanism than SSRIs, SNRIs, or benzodiazepines. The goal of the initial infusion series is to produce a therapeutic shift; maintenance is addressed through follow-up infusions or at-home options depending on individual response. It is not a replacement for all other treatments — we discuss how ketamine fits alongside your existing care plan.
How quickly might I notice a difference in my anxiety symptoms? Some patients report meaningful symptom reduction within hours of an infusion; others notice gradual improvement across the initial series. Individual response varies significantly. We monitor response across sessions and adjust accordingly, rather than setting a fixed expectation for how quickly improvement should appear.
Will I need to stop my current anxiety medication to try ketamine? Not necessarily. Many patients continue existing medications alongside ketamine therapy. Whether to adjust, taper, or maintain current medications is a decision made individually based on your specific medications, history, and response — not a blanket policy. Discuss your current regimen with Dr. Sendi during your consultation before making any changes.
What if ketamine doesn’t help my anxiety? That is a real possibility, and one we discuss honestly with every patient before treatment begins. Ketamine does not work for everyone, and no ethical provider can guarantee a specific outcome. If the initial series does not produce meaningful benefit, we reassess the clinical picture and discuss what other options may be appropriate. Our goal is to help you find what works, not to advocate for any single treatment.
Key Takeaways
- Anxiety disorders involve dysregulation of the brain’s fear-response systems that standard medications do not adequately address in every patient.
- Ketamine acts on the glutamate system — specifically NMDA receptors — through a mechanism distinct from SSRIs, SNRIs, and benzodiazepines, and may reduce anxiety symptoms in patients who have not responded to conventional treatments.
- Anxiety and depression frequently co-occur and share neurobiological overlap; ketamine’s effects may address both symptom clusters simultaneously in some patients.
- At Nova Health Recovery, ketamine therapy for anxiety begins with an in-clinic IV infusion series; at-home maintenance options are available for patients who reach a stable response. Results vary by individual.
- We do not accept insurance directly but provide a SuperBill for out-of-network reimbursement claims, and our team is available 24 hours a day to discuss logistics before any treatment commitment is made.
Anxiety that has not responded to standard medications is not a dead end — it is a clinical signal that the treatment approach may need to change. At Nova Health Recovery, we start with a thorough evaluation of your treatment history before recommending anything. Call 703-952-1876 at any hour or schedule a consultation to explore whether ketamine therapy may be an appropriate option for you.
References
National Institutes of Health — Ketamine for Anxiety: https://pubmed.ncbi.nlm.nih.gov/31339086/
American Journal of Psychiatry — Link Between Anxiety and Depression: https://psychiatryonline.org/doi/10.1176/appi.ajp.2020.20030305
Mayo Clinic — Symptoms of Anxiety: https://www.mayoclinic.org/diseases-conditions/anxiety/symptoms-causes/syc-20350961
Medical Disclaimer
The information in this blog is provided for educational purposes only and does not constitute medical advice. Anxiety disorders and their treatment vary significantly between individuals, and no treatment — including ketamine therapy — produces the same results for everyone. Individual results vary. Nothing in this content should be interpreted as a recommendation to pursue any specific treatment without the guidance of a qualified medical provider familiar with your full medical and psychiatric history. Please consult a licensed provider before making any treatment decisions. If you are experiencing a mental health crisis or thoughts of self-harm, call or text 988 to reach the Suicide and Crisis Lifeline or go to your nearest emergency room.