ECT vs. Ketamine: Comparing the Heavy Hitters

3 min read·Updated August 2026

This guide is general information, not medical advice. Ketamine therapy isn't right for everyone — talk to a licensed clinician about your specific situation.

When depression is severe — psychotic features, dangerous suicidality, or years of failed treatments — the conversation eventually reaches the two most powerful tools in psychiatry: electroconvulsive therapy (ECT) and ketamine. This comparison matters precisely for the people suffering most, so it deserves honesty rather than marketing.

Start with the uncomfortable truth

ECT is the most effective treatment psychiatry has for severe depression. Response rates in severe and psychotic depression run 60–80% — higher than ketamine, higher than any medication. Modern ECT, done under brief anesthesia with muscle relaxation, bears little resemblance to its movie portrayals. If a clinician recommends ECT for a severe episode, that recommendation reflects the evidence, not a failure of imagination.

A landmark 2023 trial (ELEKT-D) compared the two head-to-head in treatment-resistant depression without psychosis and found ketamine was non-inferior to ECT in that population — a genuinely important result. But note the qualifier: the trial excluded psychotic depression, where ECT remains clearly superior.

Where ketamine wins

Cognitive side effects. ECT's main cost is memory — most commonly temporary problems around the treatment period, occasionally persistent gaps. Ketamine causes no comparable memory impairment; in the ELEKT-D trial, memory outcomes favored ketamine.
No general anesthesia, no seizure induction, no post-anesthesia grogginess.
Speed of access. ECT usually requires a hospital program, psychiatric referral, and scheduling; a ketamine clinic near you can often start within days.
Stigma and consent comfort. Many patients who refuse ECT will accept ketamine, and a treatment you'll actually undergo beats a stronger one you won't.

Where ECT wins

Severe, psychotic, or catatonic depression — the sickest patients, where ECT's superiority is clearest and best documented.
Established maintenance pathways and decades of safety data in medically complex and elderly patients.
Insurance. ECT is a covered medical procedure under nearly all insurance including Medicare. Ketamine infusions are cash-pay (Spravato being the covered exception).
When ketamine is contraindicated — uncontrolled hypertension, psychosis history, substance-use concerns.

Side-by-side realities

Setting: ECT happens in hospitals under anesthesia; ketamine in outpatient clinics while you remain conscious (dissociated, but conscious — see what it feels like).
Course: ECT typically runs 6–12 sessions over a few weeks, with driving restrictions throughout the course; ketamine's initial series is about six sessions with a ride home needed each day.
Durability: both share the same weakness — relapse after a successful course is common without maintenance treatment, whether that's maintenance ECT, ketamine boosters, medication, or therapy.
Cost: insured ECT usually costs less out of pocket than cash-pay ketamine ($2,400–$4,800 for an initial series); uninsured ECT is far more expensive than either.

How to think about the choice

For treatment-resistant depression without psychosis, the head-to-head evidence says ketamine is a legitimate first pick — faster, kinder to memory, easier to access, with the main penalties being cost and the need for ongoing maintenance. For psychotic, catatonic, or life-threateningly severe depression, ECT should stay firmly on the table, and a ketamine clinic that doesn't say so is putting sales ahead of care.

This is also a decision to make with a psychiatrist, not a clinic's intake coordinator. If you're weighing these options, a good ketamine clinic will coordinate with your psychiatrist rather than around them — that willingness is itself a useful quality test.