Esketamine for Depression: An Honest Companion

Ketamine, long used as an anaesthetic, has in recent years become one of the more talked-about treatments for severe depression, and a nasal-spray form called esketamine is now an approved option in many places. This companion piece explains what esketamine is, how it is used, and the honest picture around it.

It is general information, not medical advice. Esketamine is a prescription treatment given under supervision, and depression care should be guided by a qualified professional. If you are struggling, reaching out is a sign of strength.

What esketamine is

Esketamine is derived from ketamine, an established anaesthetic and pain medicine, and is delivered as a nasal spray for certain kinds of depression, particularly depression that has not responded to other treatments. It works through a different brain system from most antidepressants, one involving a chemical messenger called glutamate, which is part of why it can help people for whom standard medicines have not. It represents a genuinely different approach after decades in which most antidepressants worked in broadly similar ways.

Why it draws attention

Two things make esketamine notable. First, it offers hope for treatment-resistant depression, a category that has long been difficult and disheartening. Second, it can act relatively quickly for some people, with improvement in mood sometimes appearing within hours to days rather than the weeks typical of conventional antidepressants. For someone in deep and prolonged depression, that speed can be significant.

How it is given

Because of how it works and its possible effects, esketamine is administered in a supervised medical setting rather than taken freely at home. A person typically self-sprays under the observation of clinicians and is then monitored for a couple of hours, since it can cause temporary effects such as dissociation, a sense of detachment or altered perception, as well as dizziness, raised blood pressure, and drowsiness. For this reason, people cannot drive themselves home afterward and are usually advised to rest for the remainder of the day. It is generally used alongside an oral antidepressant, not entirely on its own.

The honest, harder side

Esketamine is a serious treatment with real considerations. The monitored sessions require time and access, cost can be a barrier, and the temporary dissociative effects are unpleasant for some. There are questions about how long benefits last and about the need for ongoing treatment, and it is not suitable for everyone. There is also a broader landscape of less regulated ketamine clinics and at-home offerings, which vary in oversight, and caution is warranted there. None of this diminishes its value for the right person; it simply means it is a considered medical decision, not a casual one.

Where it fits

Esketamine is best understood as one important option, particularly for depression that has resisted other treatments, within a plan that includes therapy, other medication where appropriate, and ongoing support. It is not a first step for most people, nor a standalone cure, but for some it has been genuinely life-changing after other avenues have failed. A specialist can help judge whether it is a sensible fit.

Reaching out

If depression has been persistent and hard to treat, it can help simply to know that newer options exist and that the field has moved. A clinician can talk through whether esketamine or other approaches suit your situation, and our resources page lists support you can turn to.

For related reading, see our companion pieces on accelerated TMS, living with depression, and trauma therapy. Our Resources page lists crisis and mental-health support, and you can browse our Mental Health collection.

This article is a companion, not medical advice. Treatment for depression belongs with a qualified professional.