Treating depression with ketamine: We need incremental treatment for depression

For decades, depression treatment has sounded a bit like a broken record: “Let’s try another pill and see you back in six weeks.” For many people, that works well enough. But for millions living with treatment-resistant depression, it’s like throwing darts in the dark while the house is on fire. Enter ketaminethe former operating-room anesthetic and occasional party drug that’s suddenly being talked about as a rapid-acting antidepressant. It’s exciting, it’s controversial, and it’s exactly the sort of thing we need to talk about carefully.

Because here’s the key: ketamine is not a magic reset button for the brain. It’s one toolan important toolin what should be an increasingly incremental, personalized strategy for treating depression. If we treat it like a miracle cure, we risk overpromising, under-protecting patients, and repeating the same mistakes we’ve made with other “revolutionary” treatments.

A quick disclaimer before we dive in

This article is for educational purposes only and doesn’t replace medical advice. Ketamine is a powerful medication with real risks and should only be used under the guidance of a qualified health care professional. If you’re struggling with depression or having thoughts of self-harm, please seek immediate help from a mental health professional or emergency services in your area.

Why ketamine is suddenly on everyone’s radar

Ketamine has been around since the 1960s as an anesthetic used in surgery and emergency medicine. More recently, researchers noticed something surprising: when given at much lower doses than those used for anesthesia, ketamine seemed to lift severe depression symptomsand sometimes suicidal thoughtswithin hours instead of weeks.

That’s a huge deal because standard antidepressants usually take four to six weeks to do their thing, and even then, a sizable percentage of people don’t feel better or only see partial relief. For people who have already tried multiple medications, talk therapy, and lifestyle changes, this “rapid response” effect can look like a lifeline.

Today, we have two big ketamine-related players in the depression space:

• Intravenous (IV) ketamine, typically given off-label in clinics as a series of infusions for treatment-resistant depression.
• Esketamine nasal spray (a close chemical cousin of ketamine), which is FDA-approved for adults with treatment-resistant depression when used with an oral antidepressant and monitored in a certified clinic.

How ketamine works in the brain (as far as we know)

If you ask three neuroscientists exactly how ketamine treats depression, you’re likely to get four different answers and a whiteboard full of diagrams. The short version: ketamine primarily blocks a receptor in the brain called the NMDA receptor, part of the glutamate system, which is heavily involved in learning, memory, and neural plasticity.

By temporarily disrupting this system, ketamine seems to trigger a kind of “reset” in certain brain circuits that regulate mood. Think less “turning the brain off and on again” and more “allowing the brain’s wiring to loosen up so it can reconnect in healthier ways.” Research suggests ketamine can increase the release of brain-derived neurotrophic factor (BDNF) and support the growth of new synaptic connections. That may help explain why some patients report the sensation that their emotional “stuckness” has eased, at least for a while.

Still, key word: seems. The science is promising, but it’s not fully settled. Ketamine’s effects on depression are real, but we’re still learning who benefits most, how long those benefits last, and how to keep people safe over the long term.

What the evidence actually says about ketamine and depression

So far, research on ketamine for depression has shown some consistent patterns:

1. It tends to work fast

In clinical studies, many patients with treatment-resistant depression report noticeable improvements within hours or a few days of an infusion or esketamine session. That’s radically different from waiting weeks for an SSRI to kick in. For people in acute crisis, especially those struggling with suicidal thoughts, that speed can literally be lifesaving.

2. The effects are often temporary

Here’s the less fun part: ketamine’s antidepressant effects are often short-lived if the treatment stops. Some patients feel better for a few days; others may experience relief for a couple of weeks. That’s why many protocols use a series of infusions or nasal spray sessions up front, followed by maintenance visits spaced further apart.

This is where our “incremental treatment” lens becomes crucial. Ketamine should rarely be the only thing that’s happening. Ideally, it’s paired with ongoing therapy, medication optimization, lifestyle changes, and support systems to help turn that rapid relief into longer-term recovery.

3. Esketamine is FDA-approvedIV ketamine is still off-label

Esketamine nasal spray is currently the only ketamine-related treatment specifically approved by the FDA for treatment-resistant depression. It must be used in a certified clinic, with blood pressure and side effects monitored before and after dosing. Patients can’t just take the bottle home like a standard prescription.

Regular IV ketamine infusions, by contrast, are commonly provided “off-label.” That’s legal and not unusual in medicine, but it does mean the treatment hasn’t gone through the same formal approval process for depression. So the quality and safety standards can vary widely between clinics. Some follow strict protocols and screening guidelines; others… let’s just say, are more “entrepreneurial” than evidence-based.

The real risks: why caution is not overreacting

It’s tempting to focus only on ketamine’s upsideand if you read certain clinic websites, you’d think depression had finally met its match. But any honest discussion has to include the risks:

• Short-term side effects can include dissociation (feeling detached from yourself or reality), dizziness, nausea, increased blood pressure, and changes in perception. That’s why medical monitoring is so important during each session.
• Long-term or heavy use risks may involve bladder and urinary problems, potential cognitive changes, and the development of tolerance or dependence, especially if ketamine is misused outside of a medical setting.
• Addiction and misuse are very real concerns. Ketamine is still a controlled substance and a popular party drug. Using it unsupervised, especially at higher or more frequent doses than prescribed, can be dangerous and, in some cases, deadly.
• Not for everyone: People with untreated psychosis, certain heart conditions, uncontrolled high blood pressure, or substance use disorders may face higher risks and may not be good candidates.

Regulators have also raised red flags about compounded ketamine productslike mail-order lozenges or at-home formulations offered by some telehealth services. These lack the safety monitoring and quality controls required for FDA-approved treatments. That doesn’t mean they never help anyone, but it does mean the risk–benefit equation is a lot murkier.

What “incremental treatment” really means in depression care

The phrase “incremental treatment” might not sound glamorous, but it’s exactly the kind of mindset we need when dealing with complex conditions like major depressive disorder. Instead of chasing a single miracle cure, we gradually layer and adjust treatments based on how each individual responds.

In practice, an incremental approach to depression might look like this:

1. Start with evidence-based first-line treatments: talk therapy (like CBT or interpersonal therapy), an SSRI or SNRI, sleep and exercise support, and social interventions.
2. If there’s only partial improvement, consider adding another antidepressant, trying augmentation strategies (like atypical antipsychotics or mood stabilizers), or switching classes.
3. For true treatment-resistant depressionwhen several reasonable options have failedevaluate more advanced interventions, which may include ketamine or esketamine, transcranial magnetic stimulation (TMS), or sometimes electroconvulsive therapy (ECT).
4. At each step, monitor symptoms, side effects, functioning, and quality of life, adjusting the plan as you go.

In this framework, ketamine is not “the answer”; it’s a potentially powerful step in the ladder. For some people, that step may offer enough of a boost that therapy finally “clicks,” or they regain the energy to engage with life again. For others, the benefits might be modest or short-lived, and another strategy may be needed.

Questions to ask before considering ketamine treatment

If you (or someone you love) are thinking about ketamine, here are some smart questions to bring to a mental health professional:

• Where are we on the treatment ladder? Have enough first-line and second-line options been tried, and tried at adequate doses and durations?
• Is ketamine appropriate for my specific diagnosis? Many protocols focus on unipolar major depression; bipolar depression, psychotic depression, or mixed states may require extra caution.
• How will safety be monitored? Who will check blood pressure, watch for dissociation, and stay with me during and after each session?
• What’s the full plannot just the infusion schedule? How will we build on any relief I get from ketamine with therapy, medication adjustments, or lifestyle support?
• What happens if it doesn’t work for me? Are there backup options like TMS, ECT, clinical trials, or other advanced treatments?
• What will it cost? Esketamine may be covered by some insurers under strict criteria; IV ketamine is often an out-of-pocket expense.

A good clinic or provider should welcome these questions. If anyone makes ketamine sound like an effortless cure-allwith minimal screening and maximum marketingthat’s your cue to walk (or run) the other way.

The future: ketamine as a bridge, not a destination

One of the most promising ways to think about ketamine is as a bridge. When depression is so severe that getting out of bed feels impossible, let alone going to therapy or cooking a meal, a fast-acting intervention can create a crucial opening.

But bridges only help if you’re using them to get somewhere. That “somewhere” might be consistent psychotherapy, healthy routines, repaired relationships, better sleep, or finally finding the right long-term medication strategy. Ketamine can sometimes unlock the door; it’s still up to a comprehensive treatment plan to help someone walk through and stay on the other side.

Meanwhile, ongoing research is exploring new rapid-acting antidepressants, safer dosing strategies, and ways to combine medications, neuromodulation, and digital tools to support mood over time. In that big picture, ketamine is a starting point for innovation, not the final chapter.

Experiences from the ketamine front lines: What it can really feel like

Because ketamine is still relatively new as a depression treatment, it can feel mysterious and intimidating. While everyone’s journey is different, it may help to imagine a few composite storiesbuilt from real-world experiences reported by patients and cliniciansto understand how this fits into incremental care.

Alex: “It didn’t fix my life, but it got me unstuck.”

Alex had tried five different antidepressants over ten years. Some helped for a while; most caused side effects that made staying on them a battle. By the time they landed in a ketamine clinic, they had nearly given up on the idea of ever feeling “normal” again.

The first infusion felt strange: time slowed down, music sounded deeper, and their sense of self felt oddly distant. It wasn’t exactly fun, but it wasn’t terrifying either, especially with a nurse nearby checking in regularly. The next day, Alex noticed something subtle but huge: the crushing weight that usually sat on their chest had lightened. Not gone, but lighter. Texts didn’t feel impossible to answer. Showering didn’t feel like a heroic feat.

Over several weeks, those effects waxed and waned. Some days still sucked. But the clinic had a plan: every infusion was paired with therapy appointments focused on making use of that brief “window” of relief. Alex describes ketamine now as “the crowbar that cracked the door open, so the rest of treatment could finally get in.”

Maya: “It helped, then it fadedand that was frustrating.”

Maya’s depression was entwined with years of trauma and chronic pain. After the first two ketamine sessions, she felt clear relief. Her pain didn’t disappear, but her mood lifted enough that she caught herself humming in the car for the first time in years. By the fifth session, though, the benefit started to feel smaller and shorter-lived. When the clinic recommended stretching out treatments, her symptoms crept back.

Instead of chasing ketamine indefinitely, Maya and her care team used what they had learnednamely, that her brain could respondto pivot. They adjusted her pain management, switched antidepressants, and added a trauma-focused therapy she’d been too overwhelmed to try before. Maya still considers ketamine important, but more as “proof of concept” that her brain wasn’t broken beyond repair.

Jordan: “It wasn’t the right fitand recognizing that was also progress.”

Jordan came into treatment desperate. They’d read glowing articles about ketamine online and expected a near-instant transformation. Instead, each session left them dizzy, anxious, and unsettled, with only minor mood improvements that didn’t last. Their provider monitored them closely and ultimately decided that, given Jordan’s past history of substance use and their uncomfortable reactions, continuing wasn’t the safest choice.

It was disappointing, but it also reframed the story: not “ketamine failed,” but “this particular tool isn’t my tool.” Jordan eventually found more meaningful improvement with a combination of transcranial magnetic stimulation, structured therapy, and carefully tailored medications. Ketamine ended up being one step on the roada data point that informed the next, better step.

These experiences share a theme: ketamine can matter a lot, but it rarely stands alone. The best outcomes tend to happen when it’s woven into a broader, incremental planone that respects both its power and its limits.

Bottom line: Balanced hope beats hype

Treating depression with ketamine is one of the most exciting developments in modern psychiatrybut also one of the easiest to oversimplify. Yes, it can bring rapid relief when other treatments have failed. Yes, it can offer a precious pause in the storm for people in deep crisis. And yes, it points toward a future where we’re not stuck waiting a month to see if a medication might help.

But ketamine is not a solo act. It’s a supporting player in an incremental, personalized, carefully monitored approach to depression care. Used thoughtfully, it can be a powerful bridge from despair toward possibility. Used carelessly, it can create new risks while failing to address the deeper work of healing.

The challengeand the opportunityis to hold both truths at once: to welcome innovation without abandoning caution, and to pursue better treatments without pretending any single one is the cure.