If you have been living with depression that has not responded to medication, there is a good chance you have come across ketamine therapy in your research. The clinical results are compelling, the mechanism is different from anything that came before it, and the speed of response is unlike any other treatment in psychiatry.
But the question most patients arrive with is not “does ketamine work.” It is “does ketamine work for someone like me?”
This post answers that question directly. It covers who ketamine therapy is designed for, what the clinical criteria look like in practice, what the evaluation process involves, and what to do if you are not sure whether you qualify.
What Ketamine Therapy Is Designed For
Ketamine therapy was not developed as a first-line treatment for mild depression. It exists specifically for patients whose depression has not responded adequately to standard treatments, a population that is larger than most people realize.
Approximately one in three patients with major depressive disorder does not achieve remission with their first antidepressant. A significant proportion of those patients cycle through multiple medications over months or years without finding adequate relief. For these patients, the standard pharmacological toolkit has been exhausted or has proven insufficient, and something with a fundamentally different mechanism is needed.
Ketamine fills that role. It works through the glutamate system rather than the serotonin or norepinephrine systems targeted by traditional antidepressants, which is why it often produces meaningful results in patients who have failed multiple SSRI or SNRI trials. The mechanism is different enough that prior medication failures do not predict ketamine failure.
The Core Candidacy Criteria
While every patient is evaluated individually, the following criteria describe the profile of a strong ketamine candidate. You do not need to meet every single criterion, but the more that apply to your situation, the more likely ketamine is an appropriate next step.
You Have a Diagnosis of Major Depressive Disorder, Bipolar Depression, PTSD, or Anxiety
Ketamine has the strongest evidence base for major depressive disorder, particularly treatment-resistant presentations. It also has meaningful clinical evidence for bipolar depression, PTSD, and anxiety disorders. If your primary diagnosis falls within one of these categories, you are within the population ketamine is designed to serve.
You Have Tried at Least One Antidepressant Without Adequate Relief
Most ketamine providers, including NeuPath, look for a documented history of at least one antidepressant trial that did not produce sufficient improvement. This does not mean the medication did nothing. It means the response was inadequate, either because symptoms did not improve enough or because side effects made the medication intolerable.
Many patients seeking ketamine have tried far more than one medication. If you have cycled through two, three, four, or more antidepressants without finding lasting relief, your candidacy for ketamine is stronger, not weaker.
You Are Experiencing Significant Functional Impairment
Ketamine is most appropriate for patients whose depression is meaningfully affecting their quality of life, their ability to work, their relationships, or their daily functioning. If your symptoms are mild and your current treatment is providing reasonable relief, ketamine is unlikely to be the recommended next step. If your depression is significantly impairing your life and current treatments are not adequately addressing it, the clinical bar for ketamine is met.
You Are Not in a Substance Use Crisis
Ketamine has a potential for misuse, and active substance use disorders, particularly involving alcohol, benzodiazepines, or dissociative substances, require careful evaluation before ketamine is considered. This does not mean a history of substance use disqualifies you. It means your psychiatrist needs a complete picture of your current relationship with substances to make an informed clinical judgment.
You Do Not Have Uncontrolled Hypertension or Certain Cardiovascular Conditions
Ketamine transiently elevates blood pressure and heart rate during infusions. Patients with well-controlled hypertension can typically receive ketamine safely with appropriate monitoring. Patients with uncontrolled hypertension or certain serious cardiovascular conditions require more careful evaluation and may need medical clearance from a cardiologist before proceeding.
You Are Not Currently Experiencing Active Psychosis
Ketamine is a dissociative agent and can exacerbate psychotic symptoms. Patients with a history of schizophrenia, schizoaffective disorder, or active psychosis are generally not appropriate candidates for ketamine therapy. Patients with a history of psychotic depression who are currently stable require individual evaluation.
Strong candidates for ketamine therapy include patients with major depressive disorder, bipolar depression, PTSD, or anxiety who have tried at least one antidepressant without adequate relief and are experiencing significant functional impairment. A comprehensive psychiatric evaluation at NeuPath will confirm whether ketamine is appropriate for your specific situation.
Most providers look for at least one documented antidepressant trial without sufficient improvement. Many patients seeking ketamine have tried several medications. A longer history of failed trials strengthens rather than weakens your candidacy.
Not necessarily. A history of substance use requires careful evaluation but does not automatically disqualify you. Active substance use disorders, particularly involving alcohol, benzodiazepines, or dissociative substances, require thorough assessment before ketamine is considered. Your psychiatrist will review your full history during the evaluation.
Patients with well-controlled hypertension can typically receive ketamine safely with appropriate monitoring. Patients with uncontrolled hypertension require more careful evaluation and may need medical clearance before proceeding. Your NeuPath psychiatrist will assess your cardiovascular history during the evaluation.
Special Populations Worth Knowing About
Patients With Suicidal Ideation
Ketamine has shown remarkable results for patients with active suicidal ideation. Its rapid mechanism of action, producing meaningful relief within hours rather than weeks, makes it one of the few treatments capable of intervening quickly in a suicidal crisis. If suicidal ideation is part of your clinical picture, it is not a barrier to ketamine. In many cases it is one of the strongest arguments for it.
Patients Who Are Pregnant or Breastfeeding
Ketamine is not recommended during pregnancy or breastfeeding. If you are pregnant, your psychiatrist will discuss alternative treatment options appropriate for your situation.
Patients on Certain Medications
Some medications interact with ketamine in ways that require adjustment before treatment begins. Lamotrigine, for example, may reduce ketamine’s effectiveness. High-dose benzodiazepines can blunt the dissociative response. Your psychiatrist will review your full medication list during the evaluation and advise on any adjustments needed before your first infusion.
What the Evaluation Process at NeuPath Looks Like
Before any ketamine infusion begins at NeuPath Mind Wellness, you will have a comprehensive psychiatric evaluation with one of our psychiatrists. This is not a formality. It is the foundation of safe and effective treatment.
During the evaluation your psychiatrist will review your full psychiatric history including all previous diagnoses, medications you have tried and your response to them, any history of substance use, your current symptoms and their severity, and any medical conditions that may be relevant to ketamine candidacy.
You will also have the opportunity to ask every question you have about the treatment, the expected experience, the potential side effects, and what success looks like. Our psychiatrists take the time to make sure you have a complete and honest picture before you commit to anything.
If ketamine is determined to be appropriate, your treatment plan will be developed based on your individual profile, including the number of infusions recommended, the dosing approach, and whether combining ketamine with other treatments such as TMS or Spravato makes clinical sense for your situation.
If ketamine is determined not to be the right fit at this time, your psychiatrist will explain why and discuss what alternatives are available, whether that is TMS therapy, Spravato, GeneSight-guided medication management, or another approach.
A Note on Self-Assessment
Reading a list of candidacy criteria and deciding you qualify based on your own assessment is not the same as a clinical evaluation. This post is designed to help you understand whether a conversation with a psychiatrist is worth having, not to replace that conversation.
Depression is a complex condition and ketamine is a powerful treatment. The evaluation process exists to protect you and to ensure that if you receive ketamine therapy, you receive it in the right context, at the right dose, with the right clinical oversight, and as part of a treatment plan that makes sense for your specific situation.
If you read this post and recognize yourself in the criteria described, that is a signal worth acting on. Book a consultation. Let a psychiatrist make the clinical determination. The conversation costs nothing and could be the one that changes the trajectory of your treatment.
Reading candidacy criteria can help you decide whether a consultation is worth having, but it does not replace a clinical evaluation. Depression is complex and ketamine is a powerful treatment. A psychiatrist needs to make the final determination based on your full clinical picture.
Your psychiatrist reviews your full psychiatric history, previous diagnoses, medications you have tried and your response to them, any history of substance use, your current symptoms, and any relevant medical conditions. You will also have the opportunity to ask every question you have before committing to anything.
If ketamine is not the right fit at this time, your NeuPath psychiatrist will explain why and discuss alternatives including TMS therapy, Spravato, GeneSight-guided medication management, or another approach suited to your situation.
Yes. NeuPath Mind Wellness offers free consultations for patients considering ketamine therapy at all three South Florida locations in Delray Beach, Boca Raton, and Boynton Beach.
| Ready to Find Out If You Qualify? |
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| NeuPath Mind Wellness offers free consultations for patients considering ketamine therapy at all three of our South Florida locations in Delray Beach, Boca Raton, and Boynton Beach. Our psychiatrists will review your history, answer your questions, and give you an honest assessment of whether ketamine is the right next step for you. |
| Book your free consultation today. |
