Ketamine infusion therapy provides an alternative intervention for treatment-resistant depression when standard pharmacotherapy fails to achieve remission. The protocol administers intravenous racemic ketamine, targeting N-methyl-D-aspartate receptors to modulate glutamatergic neurotransmission and synaptic plasticity.
Unlike conventional antidepressants, ketamine may produce antidepressant effects more quickly in some patients. Because ketamine infusion for depression is an off-label treatment, careful medical screening is needed before administration.
At the Center for Psychiatric Wellness, we use psychiatric evaluation, medical screening, and supervised treatment to assess whether ketamine infusion therapy for depression is appropriate.
Key Takeaways
- Ketamine affects glutamate signaling rather than primarily targeting serotonin.
- IV ketamine is administered under medical supervision.
- IV ketamine and esketamine are different treatments.
How Does Ketamine Work For Depression?
Ketamine changes glutamate signaling in the brain, and this may reduce depressive symptoms in some patients.
Glutamate is one of the brain’s main chemical messengers. Ketamine blocks NMDA receptors, which are one type of glutamate receptor. This changes activity in another group of receptors called AMPA receptors.
Researchers also study BDNF and other pathways involved in synaptic plasticity. These processes help nerve cells change how they communicate. The changes may help explain why ketamine can affect depression sooner than many standard antidepressants.
“Ketamine was associated with greater improvement in depressive symptoms than placebo at 24 hours, 3 days, and 7 days after treatment.” – PubMed, 2020
Still, a quick response does not mean the effect will last. Some patients have a short response, while others have a longer period of improvement.
Why Is Ketamine Different From Standard Antidepressants?
Ketamine mainly affects the glutamate system, while many common antidepressants mainly affect serotonin, norepinephrine, or both.
That difference is one reason researchers have studied ketamine for treatment resistant depression. A standard antidepressant may take several weeks before its full effect can be assessed. Ketamine can act sooner in some patients.
The response is not the same for everyone. Some patients report meaningful improvement, while others have little change.
Ketamine should not be described as a cure for depression. It is one possible treatment within a broader psychiatric care plan.
What Is The Difference Between Ketamine And Esketamine?
Ketamine and esketamine are related medicines, but they are not the same treatment.
Ketamine contains two forms of the molecule. Esketamine contains one form, called the S enantiomer. Both affect NMDA receptors, but they have different routes of administration and different regulatory uses.
IV ketamine for depression is an off label use. Esketamine is given as a nasal spray for specific depressive conditions under a restricted treatment program. The FDA prescribing information requires patients to remain under observation for at least two hours after administration because of risks such as sedation and dissociation.
| Treatment | IV ketamine | Esketamine |
| Medication | Racemic ketamine | Esketamine |
| Route | IV infusion | Nasal spray |
| Depression use | Off label | Specific labeled uses |
| Setting | Medical supervision | Restricted clinical program |
| Monitoring | During and after treatment | At least two hours after dosing |
A psychiatrist can compare the options after reviewing medical history, previous treatment, current medications, and safety concerns.
The two treatments also should not be confused with TMS. TMS uses a medical device, so the correct term for a TMS device is FDA cleared. Ketamine is a medication, not a device.
What Happens During Ketamine Infusion?
A ketamine session usually includes a medical check, IV placement, supervised treatment, vital sign monitoring, and recovery time.
Before treatment, the clinical team reviews the patient’s health history and current medications. Blood pressure matters because ketamine can cause a temporary increase. The clinician may also review cardiovascular disease, pregnancy, substance use, and other medical concerns.
During the infusion, the patient stays awake. Some patients notice changes in vision, sound, body awareness, or their sense of time. Others may feel detached from their surroundings.
This is called dissociation. It can feel unusual, and sometimes uncomfortable. It also does not prove that the treatment will improve depression.
Nausea, dizziness, sleepiness, and temporary blood pressure changes can occur. The medical team monitors the patient throughout the treatment and can respond if a significant reaction develops.
At the Center for Psychiatric Wellness, ketamine infusion therapy for depression is provided in an office setting with medical supervision. Treatment begins with an evaluation so the clinical team can consider the patient’s symptoms, medical history, and individual treatment needs.
What Does A Ketamine Session Feel Like?
A ketamine session experience may include a floating sensation, changes in vision or sound, altered time perception, or a feeling of being separate from the body.
The intensity varies. One patient may notice only mild changes, while another may have a much stronger response.
The patient remains under medical observation during the infusion. The treatment team can monitor blood pressure, heart rate, oxygen levels, and alertness.
Patients should report chest pain, trouble breathing, severe nausea, severe anxiety, or another concerning symptom right away.
After treatment, the acute effects gradually wear off. Driving may not be allowed for a period after the infusion because ketamine can affect alertness and coordination.
How Many Treatments Are Usually Needed?
There is no fixed number of infusions that every patient needs.
Research has examined both single and repeated treatments. Some studies use several infusions over a few weeks, but that schedule does not apply to every patient.
A psychiatrist may recommend additional treatment when an earlier infusion produced meaningful improvement without unacceptable side effects. If treatment does not provide enough benefit, the clinician may consider another approach.
Follow up matters here. A clinician can track changes in mood, sleep, concentration, daily function, and other symptoms over time.
“Repeated ketamine infusions may maintain antidepressant effects after an initial response, although the evidence remains limited and further studies are needed.” – PubMed, 2020
How Long Can The Benefits Last?
The duration of benefit varies, and ketamine does not produce a lasting response for every patient.
Some patients may improve for days or weeks. Others may have a shorter response. Some may not respond at all.
This is why psychiatric follow up remains important after an infusion. If symptoms return, the clinician can review whether another treatment is appropriate.
Ketamine also does not replace other forms of mental health care. Depending on clinical needs, treatment may include psychotherapy, standard medication, or another psychiatric intervention.
What Does Ketamine Infusion Cost And Does Insurance Cover It?
Ketamine infusion cost varies by clinic, location, treatment plan, and insurance benefits.
There is no single national price. A clinic may charge separately for the psychiatric evaluation, each infusion, monitoring, or follow up visits. Patients should receive the current cost range before treatment begins.
Ketamine insurance coverage can be more limited because IV ketamine for depression is an off label use. Some insurance plans may cover related psychiatric care while not covering the infusion itself.
Patients should ask the clinic which services are included in the quoted cost. The insurer can then confirm whether any part of treatment is covered under the patient’s plan.
At the Center for Psychiatric Wellness, patients can discuss the treatment process and current financial arrangements before treatment starts. The clinic provides ketamine treatment in Fort Smith, AR at its office on Cameron Park Drive.
Who May Be Considered For Ketamine Infusion Therapy?
Ketamine may be considered when depression has not improved enough with standard treatment, but a psychiatric and medical evaluation should come first.
The evaluation may include previous antidepressant treatment, current symptoms, medical conditions, blood pressure, medications, substance use, and other psychiatric conditions.
Some health conditions may require extra review. These can include uncontrolled high blood pressure, certain heart conditions, pregnancy, and some psychotic disorders.
A history of substance misuse also needs careful discussion because ketamine can be misused. Medical supervision reduces some risks, but it does not remove them.
The clinical team should also consider other treatment options. Ketamine is not appropriate for every patient.
The Center for Psychiatric Wellness provides psychiatric evaluation for ketamine treatment along with medication management and therapy. Its psychiatric services include assessment of symptoms, medical history, and individual treatment needs before ketamine treatment is considered.
Is Ketamine Treatment Right for You?
Ketamine may provide rapid relief from depressive symptoms for some patients, but it doesn’t work for everyone or permanently cure depression. Its effects on glutamate signaling help explain its role in treatment-resistant depression. The right treatment depends on your individual situation.
IV ketamine and esketamine nasal spray differ in how they’re delivered and regulated, so a medical evaluation should come before choosing either option. At the Center for Psychiatric Wellness, you can discuss your symptoms, medical history, and previous treatment with a qualified team. Contact the Center for Psychiatric Wellness to explore supervised ketamine treatment and other evidence-based options.
FAQs
Can Ketamine Infusion Therapy Be Taken With An Antidepressant?
Ketamine infusion therapy can be used alongside some antidepressants, but the combination be reviewed by the treating psychiatrist before treatment.
Many patients in clinical studies have remained on their regular psychiatric medication while receiving ketamine. However, medication interactions and individual health factors differ.
A patient should not stop an antidepressant to prepare for ketamine unless the prescribing clinician gives specific instructions.
Can Ketamine Raise Blood Pressure?
Yes, ketamine can cause a temporary increase in blood pressure, which is why medical monitoring is part of the treatment process.
Patients with uncontrolled hypertension or certain cardiovascular conditions may need additional assessment. The treatment team should know about blood pressure medication and cardiovascular history before an infusion.
Can Ketamine Cause Dependence?
Yes, ketamine has misuse and dependence potential, so a history of substance-use problems should be discussed before treatment.
Medical supervision reduces some risks associated with unsupervised use, but it does not remove the possibility of misuse. Continued psychiatric follow-up is important when repeated treatment is considered.
Can Patients Drive After An Infusion?
Patients should not assume they can drive immediately after treatment because ketamine can temporarily affect alertness, coordination, and judgment.
The clinic should provide specific discharge instructions. A responsible adult may need to provide transportation, depending on the treatment protocol and the patient’s recovery.
Can Ketamine Be Used During A Mental Health Crisis?
Ketamine treatment should not be used as a substitute for emergency care during an immediate mental health crisis.
If a person is at immediate risk of suicide or has a plan to cause self-harm, emergency medical services should be contacted. In the United States, patients can also call or text 988 for the Suicide & Crisis Lifeline.
References
Related Articles
- https://centerforpsychiatricwellness.com/
- https://centerforpsychiatricwellness.com/psychiatric-services/
- https://centerforpsychiatricwellness.com/ketamine-infusion-therapy/
