Comparisons
Spravato vs. IV Ketamine: What's the Difference?
By the TMS Nearby editorial team · Reviewed June 12, 2026
Spravato (esketamine) and IV ketamine are closely related — esketamine is one of the two mirror-image molecules that make up ketamine. But as treatments they differ meaningfully in regulation, cost, dosing flexibility, and the practical experience of getting care.
The biggest single difference: Spravato is FDA-approved for treatment-resistant depression and covered by most insurers, while IV ketamine is used off-label and almost always paid out of pocket.
Side-by-side comparison
| Spravato (esketamine) | IV ketamine | |
|---|---|---|
| Molecule | S-enantiomer of ketamine | Racemic ketamine (both enantiomers) |
| Route | Nasal spray | Intravenous infusion |
| FDA status | Approved for TRD and MDD with suicidal ideation | Off-label for psychiatric use |
| Insurance | Covered by most insurers, Medicare | Rarely covered |
| Typical insured cost | $10–$300 per session | N/A (cash pay) |
| Typical cash cost | $400–$900 per session | $400–$700 per infusion |
| Dosing | Fixed doses (56mg / 84mg) | Weight-based, titratable |
| Monitoring | 2 hours required at REMS-certified clinic | Clinic-set, usually in-room monitoring |
| Schedule | 2x/week → weekly → every 1–2 weeks | 6-session induction, then boosters as needed |
Is one more effective?
Both produce rapid antidepressant effects, and both have meaningful evidence behind them. Some clinicians believe IV ketamine's titratable, weight-based dosing lets them optimize response in ways Spravato's two fixed doses can't, and small comparative studies have suggested an edge for IV ketamine — but large head-to-head trials are lacking.
In practice, the choice is usually decided by coverage and access rather than efficacy: if your insurance covers Spravato, it's often the far more affordable route to a ketamine-class treatment.
Practical differences that matter
- Insurance paperwork: Spravato requires prior authorization and a REMS-certified clinic; IV ketamine requires neither but bills you directly.
- Time per visit: both involve roughly two hours at the clinic including monitoring.
- Transportation: both cause dissociation and require someone to drive you home.
- Suicidal ideation: Spravato is specifically FDA-approved for depressive symptoms in MDD with acute suicidal ideation or behavior.
- Availability: IV ketamine clinics outnumber REMS-certified Spravato sites in some regions; in others the reverse is true.
Frequently asked questions
Is Spravato just ketamine in a nasal spray?
Not exactly. Spravato contains only esketamine, the S-enantiomer of the ketamine molecule, at fixed FDA-approved doses. IV ketamine uses the racemic mixture with weight-based dosing. They're pharmacologically similar but regulated and delivered very differently.
Which should I try first?
If you have insurance that covers Spravato, it's usually the more affordable starting point. If you've failed Spravato, lack coverage, or your clinician believes titratable dosing matters for your case, IV ketamine is a reasonable alternative. Discuss sequencing with a psychiatrist familiar with both.
Can I switch between them?
Yes. Patients sometimes move from one to the other based on response, side effects, cost, or clinic access. There's no requirement to stay on the first option you try.
Keep exploring
Sources
This guide is for educational purposes only and is not medical, legal, or insurance advice. Costs, coverage, and clinical suitability vary by individual, plan, and clinic — always verify directly with your provider and insurer. If you're in crisis, see our crisis resources.