Spravato, IV Ketamine, and At-Home Ketamine: What Is the Difference?

If you have been reading about ketamine for depression, you have probably run into three different names: Spravato, IV ketamine, and at-home ketamine. They sound like variations on the same thing, and in one sense they are, because they all touch the same underlying chemistry. But the way each one is given, who tends to be a good fit, and how it is paid for can look quite different. Understanding the spravato vs ketamine difference is worth a few minutes, especially if standard antidepressants have not moved the needle for you.

This is educational, not a prescription. The goal here is simply to help you picture the landscape clearly, so that whatever conversation you eventually have with a clinician starts from a place of understanding rather than confusion.

A quick note on why depression can be stubborn

Most first-line antidepressants work on serotonin. For many people, that is enough. For others, it never quite lands, and they cycle through medication after medication without much relief. When that happens, it is worth asking whether the depression is running on a different system altogether.

Ketamine and its cousin esketamine act on glutamate, a separate signaling pathway, with effects that can be measured in hours rather than weeks and a roughly 24 to 72 hour window of heightened neuroplasticity afterward (Zanos and Gould, 2018, Molecular Psychiatry). That is a genuinely different mechanism from serotonin-based medication, which is part of why these treatments are considered when the usual approach has fallen short.

There is one thread worth pulling on here. If you ever got your bell rung years ago, in sports, a car accident, a fall, a blast, or a fight, that history is a recognized risk factor for depression that resists standard treatment. People with a bell-ringing hit are more than three times as likely to have depression, and the elevated risk can persist for years (Beaton et al., 2020, Frontiers in Neurology). Notably, one meta-analysis found that antidepressants after a head impact showed no significant difference from placebo (Foreman et al., 2019, J Head Trauma Rehabil). A head-injury history is a risk factor, never an indication for ketamine by itself, but it can be a clue about why standard care missed something.

Spravato (esketamine): the in-clinic, insurance-covered route

Spravato is a nasal spray form of esketamine. It is FDA-approved for treatment-resistant depression, not for concussion or any head injury, and it is given under supervision in a certified clinic. You take the spray in the office, then stay for a monitoring period before you head home.

A few things tend to make Spravato a natural fit:

• You want a treatment that most insurance plans recognize, including MO HealthNet, TRICARE, and Medicare.
• You are comfortable coming into the clinic on a set schedule for each dose and the monitoring window afterward.
• You have tried standard antidepressants without adequate relief, which is the specific situation Spravato was studied and approved for.

Because it is delivered in a REMS-certified setting, the structure is deliberately careful. That structure is a feature, not a hurdle, and it is why coverage is generally available.

IV ketamine: the infusion approach

IV ketamine is delivered through an infusion over a set period while you rest in a chair. It uses ketamine rather than the esketamine in Spravato, and it is typically self-pay, since this use is not FDA-approved in the same way. People are often drawn to the infusion route because dosing can be adjusted in the moment and the experience is fully clinician-monitored from start to finish.

It tends to suit someone who wants a hands-on, in-office experience and is comfortable with an out-of-pocket arrangement. It is worth knowing that not every clinic offers every route, so the practical question is often which pathways a given practice actually provides.

At-home ketamine: doctor-supervised, on your schedule

At-home ketamine means a doctor-supervised, self-pay program where you take a prescribed form of ketamine in your own space, with clinical oversight and check-ins around each session. For people whose lives make repeated clinic visits genuinely hard, and who still want real supervision, this can be the route that removes the friction that would otherwise stop them from starting.

The key word is supervised. At-home does not mean unsupervised, and a responsible program builds in the same measurement and follow-up you would get in a clinic, including a PHQ-9 depression score checked at every visit so progress is tracked with numbers rather than guesswork.

So which one fits you?

Here is a simple way to hold the three routes side by side:

• Spravato - in clinic, FDA-approved for treatment-resistant depression, covered by most insurance. Good when you want a recognized, structured, covered path.
• IV ketamine - in-clinic infusion, self-pay, fully monitored. Good when you want a hands-on office experience and flexible dosing.
• At-home ketamine - doctor-supervised, self-pay, on your schedule. Good when clinic logistics are the main barrier but you still want oversight.

None of these routes is a fix for an old head injury, and none of them claims to be. What matters more than the delivery method is the diagnostic question underneath it: why did the usual treatment not work? That is where the head-injury thread becomes relevant again. Some effects of an old hit can quietly linger. Sleep disorders, for example, affect somewhere in the range of 30 to 70 percent of people with a head-injury history, and roughly half of those who took a bell-ringing hit are not back to baseline years later (TRACK-TBI, 5-year outcomes). Those are the kinds of patterns a trained eye can recognize and factor in.

If your depression has not responded to the usual medications, and there is an old hit somewhere in your history, a proper evaluation from a clinic that has neurology on staff can look at this. Neurology on staff is a diagnostic capability, a way of understanding the picture, not a promise of any particular outcome.

If any of this resonates, and especially if you are having thoughts of not wanting to be here, please reach out for support right now by calling or texting 988. You deserve care, and there are people ready to help.

The honest answer to the spravato vs ketamine difference is that the right route depends on your coverage, your schedule, and above all the underlying reason your depression has been hard to treat. Understanding that difference is the first step. Getting the whole picture looked at carefully is the next one.