You have read about ketamine for depression and found three different versions of it. One clinic offers infusions. Another offers a nasal spray covered by insurance. A third injects it.
They are not interchangeable, and the differences affect what you pay, how long you sit in a chair, and whether insurance is involved at all.
Intramuscular ketamine is an injection into a muscle rather than a drip into a vein. This guide compares all three routes honestly, including where each has the advantage, so you can ask better questions wherever you end up.
What Is Intramuscular Ketamine?
Intramuscular ketamine is delivered by a single injection into a large muscle, usually the upper arm or thigh, where it absorbs into the bloodstream over several minutes. Dr. Sambunaris administers ketamine by intramuscular injection. No line is placed, no pump is used, and the dose is given once rather than titrated across an hour.
Absorption is high with IM delivery, though slightly less predictable than intravenous, since it depends on blood flow through the muscle.
Onset takes roughly 5 to 10 minutes rather than the near-immediate onset of an infusion.
The practical consequence is simplicity. Fewer materials, no cannulation, and a shorter appointment.
The Three Routes Compared
Intramuscular
IV infusion
Spravato (esketamine)
How it is given
Single injection into muscle
Drip into a vein over ~40 to 60 min
Nasal spray, self-administered under supervision
FDA status for depression
Off-label
Off-label
FDA approved for treatment-resistant depression
Typical monitoring
Observed on site
Observed throughout
2 hours required on site
Dose control mid-session
No, given once
Yes, can be adjusted or stopped
Fixed dose
Insurance
Rarely covered
Rarely covered
Often covered
Needle involved
Yes, brief
Yes, cannula for the session
No
Two rows deserve attention.
Dose control. An infusion can be slowed or stopped partway if someone reacts badly. An IM injection cannot be taken back once given. That is a genuine advantage of IV for a first treatment in someone with an uncertain response.
FDA status. Only Spravato is FDA approved for treatment-resistant depression. IV and IM ketamine for depression are both off-label, which is legal and common, and worth understanding rather than glossing over.
Cost and Insurance Differ Sharply
This is where the routes separate most.
Spravato is FDA approved and frequently covered by insurance, though it requires prior authorization, a certified treatment center, and two hours of on-site monitoring after every dose. Covered patients often pay a copay rather than the full cost.
IV ketamine is usually not covered, since off-label use for depression falls outside most plans. Published pricing across US clinics commonly lands in the several-hundred to over one-thousand dollar range per infusion.
Intramuscular ketamine is usually not covered, and is typically the least expensive of the three per session, since it uses fewer consumables and less clinical time.
A course usually involves an initial series of several sessions over a few weeks, followed by maintenance spaced further apart. Ask any clinic for the full course cost rather than the per-session figure, since the series is what you are actually committing to.
Ask your insurer directly about Spravato coverage if cost is the deciding factor. It is the only route where the answer might be yes.
Why Off-Label Matters Here
Off-label means a medication is prescribed for a condition other than the one it was formally approved to treat.
Ketamine was approved decades ago as an anesthetic. Its antidepressant effects were identified later, and the body of research supporting that use has grown substantially since.
Off-label prescribing is legal, common across all of medicine, and not a warning sign in itself. What it does mean practically:
Insurance rarely covers it
Protocols vary between clinics rather than following one approved standard
The prescriber’s judgment carries more weight than a package insert
That last point is why who administers it matters. Ask about the prescriber’s background in psychiatry and in the medication itself rather than only about the clinic’s equipment.
The National Institute of Mental Health publishes current information on ketamine and esketamine for depression, and it is a more neutral starting point than any clinic page.
Session Length and Time Commitment
Time is the factor people underestimate.
Spravato requires two hours of monitoring on site after every dose, by regulation. Twice weekly during induction, that is a substantial commitment, and you cannot drive yourself home.
IV infusion runs roughly 40 to 60 minutes of infusion plus recovery, so plan for a couple of hours door to door.
Intramuscular is the shortest. The injection itself takes moments, effects typically last around 45 minutes to an hour, and a recovery period follows.
Nobody drives after any of the three. Arrange transport for every session regardless of route.
For someone working full time, the difference between a two-hour regulated monitoring period twice a week and a shorter IM appointment is not a small consideration.
Which Route Suits Which Person
There is no universally better option, which is why a clinic offering only one should still explain the others.
Spravato often suits people for whom cost is the barrier and who have insurance likely to cover it, people who prefer to avoid needles, and people who meet the specific treatment-resistant depression criteria it is approved for.
IV infusion often suits first treatments where dose control matters, people with complex medical histories, and situations where stopping mid-session might be needed.
Intramuscular often suits people paying out of pocket who need the lower per-session cost, people who want shorter appointments, and those who have already tolerated ketamine well by another route.
Your medical history, other medications, blood pressure, and history of psychosis or substance use all affect which is appropriate. That assessment is the appointment, not a website quiz.
FAQs About Intramuscular Ketamine
Is intramuscular ketamine as effective as IV? Both routes deliver the same medication and research supports antidepressant effects from each. IV allows dose adjustment mid-session, which is an advantage in some situations. IM is simpler and typically less expensive. No responsible provider will promise you a specific result from either route.
Does insurance cover intramuscular ketamine? Usually no. Off-label ketamine for depression, whether IM or IV, is rarely covered. Spravato is the FDA-approved form and is often covered with prior authorization. Ask your insurer in particular about Spravato if coverage is your deciding factor.
How many sessions will I need? Courses commonly begin with an initial series over a few weeks, followed by maintenance spaced further apart. The number depends on your response and is decided with your prescriber after assessment, not quoted in advance from a website.
Can I drive after a ketamine session? No. You cannot drive after any route of ketamine treatment on the day of the session. Arrange transport before you attend. This applies to IM, IV, and Spravato equally.
Is ketamine addictive? Ketamine has recognized potential for misuse, which is why it is a controlled substance and why treatment happens under supervision rather than at home. Medically supervised treatment differs substantially from recreational use. Tell your prescriber about any history of substance use, since it affects whether and how treatment proceeds.
Ask About Your Own Suitability
The right route depends on your history, your insurance, and what you can realistically attend. An assessment answers that in one appointment.
Atlanta Ketamine Clinic provides ketamine therapy at 5755 North Point Parkway Suite 256, Alpharetta, GA 30022.
Book My Consultation or call (770) 817-9200.
Reviewed by Angelo Sambunaris, M.D., with more than 20 years of clinical experience and over 30 years in clinical research.If you are having thoughts of suicide or self-harm, call or text 988 to reach the Suicide and Crisis Lifeline, available 24 hours a day.This article is general information, not medical advice. Treatment decisions belong with your prescriber.
