If you are considering your first ketamine infusion, you probably have two feelings at once: hope that this could finally help, and a long list of practical questions about what you are actually walking into. This guide is written for that moment. It walks you through who IV ketamine is for, what your first appointment looks like minute by minute, and what you can realistically expect to feel afterward.
IV ketamine infusion is a medically supervised treatment that delivers ketamine directly into the bloodstream through an intravenous line. Unlike oral antidepressants that can take weeks to build up, IV ketamine may begin easing symptoms within hours. At Nushama’s Aventura clinic, members across South Florida receive this treatment in a calm, private setting, with preparation, medical monitoring, and integration support built into every appointment.
Here is the experience many first-time members describe: waking up about 24 hours after that first infusion and noticing something unfamiliar. The low-level dread that has hummed in the background for years, the tightness behind the sternum, the heaviness that greets you before your feet hit the floor, is quieter. Not gone, necessarily, but reduced to a volume you can manage. For many people living with treatment-resistant depression, anxiety, or PTSD, that shift is the first sign that something meaningful has changed.
For a broader look at the conditions Nushama treats, visit our conditions overview page.
Is IV Ketamine Right for You? Who It Helps
If you have been through two or more antidepressant trials without full relief, IV ketamine offers something different: not a last resort, but a treatment that works through an entirely separate mechanism than traditional antidepressants.
The strongest clinical evidence supports IV ketamine for these conditions:
- Treatment-resistant depression (TRD): Multiple clinical trials show that a single low-dose IV ketamine infusion produces a 50-70% response rate in people with TRD, defined as a 50% or greater reduction in depression severity scores. Effects can appear within hours and typically last three to seven days after a single infusion.
- Major depressive disorder (MDD): Even in people who have not been classified as treatment-resistant, IV ketamine may offer rapid relief when standard medications are too slow or poorly tolerated.
- Generalized anxiety disorder and severe anxiety: Many members report reductions in rumination, chest tightness, and the physical weight of anxiety within 24-48 hours.
- PTSD: A 2025 study in the Journal of Psychopharmacology found that 75% of 117 patients with treatment-resistant PTSD experienced clinically meaningful improvement after IV ketamine, with 62% reaching full remission (MacConnel, Earleywine, & Radowitz, 2025).
- Acute suicidal ideation: IV ketamine has been studied as a rapid stabilization tool for people in crisis, with significant reductions in suicidal thoughts observed within 24 hours.
You may be a candidate if you are an adult who has not responded adequately to two or more antidepressants, if you need faster relief than oral medications provide, or if side effects from existing medications are limiting your daily functioning.
IV ketamine is generally not appropriate for people experiencing active psychosis, uncontrolled high blood pressure, or a current substance use disorder without a structured treatment plan. A thorough medical screening determines candidacy before any infusion, so you never have to guess whether it is safe for you.
Nushama’s Aventura location at 299 Ives Dairy Road serves members across South Florida, including Miami, Fort Lauderdale, Boca Raton, and Hollywood.
What Your First IV Ketamine Appointment Actually Looks Like
Members often tell us the appointment itself feels less intimidating, and more meaningful, than they expected. Here is what the experience looks like from arrival to departure, so nothing about your first visit comes as a surprise.
Before Your Infusion
Every appointment begins with a medical check-in. Your care team reviews vital signs, answers questions, and revisits your treatment goals. Because this is your first infusion, you will have already completed a full medical and psychiatric intake, including a review of your history, current medications, and any prior experience with psychedelic or dissociative therapy. Nothing about the day is rushed.
Once you are settled, the team helps you prepare your mindset. You will be guided through a brief intention-setting conversation, not a script, but a simple check-in about what you hope to explore or release. You will settle into a comfortable reclining chair, and you are offered an eye mask and noise-canceling headphones with a curated music playlist.
During the Infusion (45-60 Minutes)
A Nushama clinician places a small IV line, typically in your arm. The infusion begins at an individualized dose, and within about 10 minutes, the medicine starts to take effect.
What does it feel like? Most people describe a sense of deep relaxation first: a heaviness in the body, then a lightening in the mind. Many experience what is called dissociation: a feeling of floating, of watching your thoughts from a gentle distance. Visual softening (colors shifting, geometric patterns) is common. Some members revisit memories or places from their past. Others simply feel a deep, quiet stillness.
For a first-timer, the most reassuring thing to know is this: the experience is not frightening when you know what to expect and you are in a supervised environment. Your care team monitors your vitals continuously throughout and can adjust the infusion rate in real time. If anything feels like too much, you say so, and they respond.
After the Infusion (30-45 Minutes)
When the infusion ends, you will rest in the same private suite while the effects gradually resolve. Light-headedness typically fades within 20-30 minutes. Most members feel calm afterward, sometimes tired, often surprisingly clear.
Plan ahead for one thing: you will need someone to drive you home. Arrange a friend, family member, or rideshare before your appointment so this is one less thing to think about on the day.
The Integration Window (The Next 24-72 Hours)
The 24-72 hours after an infusion represent what researchers describe as a neuroplasticity window, a period when the brain may be especially receptive to forming new thought patterns and emotional connections. Nushama offers integration guidance to help you make the most of this window through reflection, journaling, or work with a therapist. This is where the infusion becomes lasting change rather than a one-day experience.
What First-Time Members Actually Feel Afterward
The most common thing members say after their first infusion is not “I feel happy.” It is “the noise in my head is quieter.” Here is how that tends to look by condition.
Depression
For people living with depression, the shift often starts as a lifting of weight, not euphoria, but the absence of the constant downward pull. Sleep may improve within 24-48 hours. Members frequently describe re-engaging with small, everyday activities they had been avoiding: cooking a meal, returning a phone call, walking outside without the sense that each step requires effort.
Anxiety
Members with generalized anxiety often notice the physical symptoms ease first. The chest tightness loosens. The rumination loops, the same worried thoughts cycling on repeat, slow down or quiet. For many, this begins within 24 hours of their first infusion.
PTSD
People living with PTSD often describe intrusive memories becoming “less loud” after IV ketamine treatment. The memories do not disappear, but they carry less emotional charge. In the MacConnel et al. study (2025), mean PTSD symptom scores dropped from 52.54 to 28.78, a shift from above the diagnostic threshold to below it, with benefits appearing for some members within two weeks and lasting months for others.
What the Timeline Looks Like
Effects often begin within hours of a single infusion. Full benefit typically builds over a series of six infusions administered over two to three weeks. Some members notice meaningful change after the first session; others need two or three infusions before the shift becomes clear. No two people respond identically, and your care team tracks outcomes throughout your series and adjusts dosing or frequency based on your individual response.
Why First-Timers Often Start With IV (vs. Other Ketamine Formats)
If you are choosing your first ketamine experience, IV infusion delivers the most precise dose and the most consistent, controllable experience of any format available. Here is how the options compare.
| Format | Dose control | Onset | Best suited for |
|---|---|---|---|
| IV ketamine | Highest; adjustable in real time | Within ~10 minutes | First-timers who want a predictable, supervised experience |
| Spravato (esketamine nasal spray) | Fixed device dose; nasal absorption varies | Gradual | People who want an FDA-approved, often insurance-covered option |
| Intramuscular (IM) | Set once injected; not adjustable mid-session | Fairly rapid | Members comfortable with a less controllable depth |
| Oral (lozenges, troches) | Lowest; ~17-29% bioavailable | Slow, variable | At-home maintenance in some plans, not a first infusion |
A few notes on the comparisons. Spravato is FDA-approved for treatment-resistant depression and works well for many people, though nasal absorption can vary from session to session. A 2025 retrospective study from McLean Hospital found that IV ketamine produced a 49.2% reduction in depression scores over an induction series, compared to 39.6% for intranasal esketamine, and IV patients showed significant improvement after just one treatment versus two for esketamine (Meisner et al., Journal of Clinical Psychiatry, 2025). Nushama offers both IV ketamine and Spravato; your care team helps determine which is the right fit for you.
Compared with intramuscular ketamine, IV infusion lets clinicians adjust dosing moment by moment, which is a meaningful advantage for first-time members who want a predictable experience. You can read more on the tradeoffs in our guide to IV vs. IM ketamine. Oral ketamine, by contrast, has a bioavailability of roughly 17-29%, meaning much of the medicine is lost during digestion; IV ketamine reaches the bloodstream at nearly 100% bioavailability, which is why it is the clinical standard for infusion therapy.
This is not about one format being universally better. It is about matching the right tool to the right person. For people seeking their first ketamine experience with the highest level of clinical control, IV infusion is typically the starting point.
Why South Florida Patients Choose Nushama in Aventura
The clinic environment shapes the ketamine experience more than most people expect. A supervised, calm, medically equipped space changes how you feel during, and after, an infusion.
The Infusion Suite
Nushama’s Aventura location offers private treatment rooms designed for comfort: reclining chairs, ambient lighting, curated music, and medical-grade monitoring throughout every session. The setting is not clinical in the sterile, fluorescent-light sense. It is designed to support both safety and ease.
Your Care Team
Treatment is overseen by physicians with experience in ketamine therapy, including Dr. Steven Radowitz, a board-certified internist and one of the co-authors of the 2025 PTSD study published in the Journal of Psychopharmacology. Registered nurses monitor your vitals continuously. Your care team is not in the next room. They are present throughout.
Preparation and Integration Support
Nushama’s model does not begin and end with the infusion itself. Every member receives preparation guidance before their first session and integration support afterward, including access to licensed therapists and integration coaches who help translate insights from the ketamine experience into lasting changes in daily life.
Location and Logistics
Nushama’s Aventura clinic is located at 299 Ives Dairy Road, easily accessible from Miami, Fort Lauderdale, Boca Raton, and Hollywood, with convenient parking on-site. If you are traveling from elsewhere in South Florida, the clinic is near major highways and well-connected to the broader metro area.
Take the First Step
Think about the week after your first infusion. What is the first thing you would do if the weight of depression, anxiety, or PTSD were lighter, even by a few degrees? Maybe it is playing with your kids without the background noise of dread. Maybe it is sleeping through the night for the first time in months.
IV ketamine does not promise a cure. But for many people across South Florida, it opens a door that traditional treatments could not.
Book a consultation with Nushama’s Aventura care team to find out if IV ketamine infusion is right for you.
Frequently Asked Questions
How quickly does IV ketamine work for depression?
Many members notice a shift in mood within hours of their first infusion. Research shows that effects can appear as soon as 40 minutes after treatment, with peak antidepressant benefits typically occurring 24-48 hours later. A full treatment series, usually six infusions over two to three weeks, is generally recommended to build and sustain relief. Learn more about how ketamine therapy works for depression.
Is IV ketamine safe?
IV ketamine has been used in medicine since the 1970s, originally as an anesthetic. At the sub-anesthetic doses used for mental health treatment, it is generally well tolerated. Common side effects include temporary dizziness, light-headedness, and mild nausea, which typically resolve within an hour of the infusion ending. All infusions at Nushama are medically supervised with continuous vital sign monitoring. For more details, visit our FAQ page.
How long do the effects of IV ketamine last?
After a single infusion, effects may last three to seven days. A series of infusions extends the benefit significantly. Some members experience sustained improvement for weeks to months. Periodic maintenance infusions can help preserve the gains over time, and your care team will work with you on an individualized schedule. Book a consultation to discuss a maintenance plan with your care team.
What’s the difference between ketamine and Spravato?
Spravato (esketamine) is a nasal spray form of ketamine that is FDA-approved specifically for treatment-resistant depression. IV ketamine uses racemic ketamine, the full molecule, delivered directly into the bloodstream. Both can be effective; the key differences are in dosing precision, route of delivery, and insurance coverage. Spravato is often covered by insurance, while IV ketamine is typically an out-of-pocket expense. Visit our pricing page for costs, financing options, and discount programs. For a detailed comparison, visit our Spravato vs. IV ketamine guide.
