| FDA status |
Approved for treatment-resistant depression (2019) and MDD with suicidal ideation (2020); standalone TRD approval (Jan 2025). |
Not FDA-approved for depression; used off-label under a doctor's prescription. Ketamine itself is Schedule III and legal to prescribe. |
| Insurance coverage |
Frequently covered by commercial insurance and Medicare after failing two or more antidepressants; prior authorization is common but usually obtainable. |
Rarely covered for psychiatric indications; most patients pay out of pocket. Some plans reimburse via superbill, especially for chronic pain. |
| Typical out-of-pocket cost |
$590–$885 per drug vial + clinic observation fee; often near $0 with coverage. Patient Assistance Program available for uninsured. |
$400–$800 per infusion; typical induction series is 6 infusions over 2–3 weeks, totaling $2,400–$4,800. |
| How it's given |
Patient self-administers nasal spray in a certified provider office and is observed for 2 hours before leaving. No IV line required. |
Clinician administers 0.5 mg/kg over ~40 minutes by IV drip. Anesthesia-trained monitoring on-site. Patient needs a driver home. |
| Speed of effect |
Onset hours to days; most pivotal trials measured effects at 4 and 28 days. |
Onset typically within hours; effect often noticeable by the second or third infusion of the series. |
| Evidence base |
Multiple FDA-registration-level RCTs (TRANSFORM, SUSTAIN series); remission data vs. placebo. Real-world outcomes registry growing. |
Decades of academic trials; foundational Berman 2000 paper; strong short-term effect size. Long-term durability data thinner than Spravato. |
| Who it fits |
Most patients with insurance pursuing TRD treatment; those who want the most regulatory oversight; those who prefer no IV. |
Self-pay patients who want the most-studied delivery model; those whose doctors aren't REMS-certified; sometimes preferred for rapid crisis response. |