Ketamine for Depression: Evidence, Candidacy, and Care in Tampa

Depression is more than sadness. It can flatten energy, sleep, appetite, concentration, and the ability to feel pleasure, and it can bring thoughts of self-harm. It is common, it is real, and it is treatable.

Standard treatments — psychotherapy and antidepressant medications — help many people. But some people try one medication after another without adequate relief. When that happens, it is reasonable to ask what else exists, and to ask it carefully.

Ketamine therapy may be considered for some adults with depression, usually after standard treatments have not helped enough. It is not FDA-approved for depression; its use here is off-label. A related medication, esketamine (Spravato), is FDA-approved for specific depression indications under a restricted program.

Research suggests ketamine may reduce depressive symptoms in the short term for some people. That is genuinely encouraging — and also limited. Studies are still working out how durable the benefit is, who is most likely to respond, and how treatment should be maintained over time.

The modern research era began with small randomized trials — including a frequently cited 2006 study by Zarate and colleagues — in which some participants with hard-to-treat depression showed improvement within days of a single IV infusion. Later work, including a 2013 trial comparing ketamine with an active comparator, added support for short-term benefit in some patients.

Here is what the research does not show: that ketamine works for everyone, that benefits last without follow-up care, or that it should replace antidepressants or therapy. Any clinic that tells you otherwise is ahead of the science.

Ketamine causes temporary effects — dissociation, nausea, dizziness, and changes in blood pressure — that call for monitoring. It is not appropriate for everyone: certain heart conditions, uncontrolled blood pressure, active psychosis, and some substance-use histories may rule it out. The evaluation exists to sort this out honestly.

We also ask directly about thoughts of self-harm during evaluation — not to disqualify you, but to plan care safely. Candor at that stage protects you.

If you live in the Tampa Bay area and standard depression treatment has not brought enough relief, a consultation is the right starting point. We review your history, talk through what the evidence can and cannot offer, and — with your permission — coordinate with your therapist or psychiatrist. If ketamine therapy is not the right fit, we will say so.