Ketamine for Depression: Benefits, Risks, and What to Expect



Kayla holds nearly a decade of experience in the rehab space, including in-house content management at a leading treatment center and founding a rehab-specialized content agency. She believes addiction and mental health issues are universal human experiences that can serve as important entry points onto a path toward self-realization and well-being.

Olivia Mueller is the VP of Research with Recovery.com and holds over 10 years of experience in the addiction treatment industry and a Master’s in Addiction Studies from King’s College London, University of Adelaide, and Virginia Commonwealth University.




Kayla holds nearly a decade of experience in the rehab space, including in-house content management at a leading treatment center and founding a rehab-specialized content agency. She believes addiction and mental health issues are universal human experiences that can serve as important entry points onto a path toward self-realization and well-being.

Olivia Mueller is the VP of Research with Recovery.com and holds over 10 years of experience in the addiction treatment industry and a Master’s in Addiction Studies from King’s College London, University of Adelaide, and Virginia Commonwealth University.
Both ketamine and psychedelics have emerged as popular therapeutic methods in recent years for those who have been resistant to other forms of depression treatment. While many medical professionals and people who have undergone these treatments attest to their benefits, there are still legitimate concerns being expressed about the potential risks associated with their use.
We take a look at some factors to consider, and the science behind this approach.
How Ketamine Is Used to Treat Depression
Ketamine’s most common medical use is as an anesthetic and a sedative. But it can also be used as a fast-acting antidepressant, usually in the form of a nasal mist or IV infusion performed under medical supervision. Studies have shown that, starting within 4 hours of receiving a dose, ketamine relieved the symptoms of depression for approximately one week at a time.1 Research further suggests that ketamine causes new connections to form in brain. Its fast-acting effectiveness and impacts on neuroplasticity have led clinicians like Gerard Sanacora, Psychiatry Specialist at Yale Medicine, to speculate on its increased use in medical research.
“It’s quite possible that we will see more medical institutions offering ketamine as a treatment,” says Sanacora. “And the FDA recently approved the use of esketamine, which is derived from ketamine. These are all very exciting prospects.”2
Is Ketamine Safe?
Currently, ketamine is only approved by the FDA as an anesthetic and pain reliever, not as a depression treatment.3 This is largely due to the fact the long-term impacts of ketamine are mostly unknown. Since it’s also used recreationally for its narcotic properties, addiction risk is a major concern. Too much ketamine can have adverse effects like dissociation, hallucinations and paranoia (known as a “K-hole”).4
While ketamine administered in the proper doses under professional supervision is considered safe, these concerns prevent it from becoming more mainstream.
How Psychedelics Are Used to Treat Depression
Psychedelics have a different way of treating depression. Research shows that hallucinogens like psilocybin (found in psychedelic mushrooms), LSD and ayahuasca can potentially relieve the depression symptoms after just a single dose. Successful psychedelic treatments can help people gain clarity about problems they’re experiencing, giving them the opportunity to access their subconscious and process past traumas they had previously suppressed.
According to recent studies, psychedelics enhance people’s feelings of connectedness with others, their spirituality and their sense of meaning.5 Some studies suggest that these substances open pathways in the brain—hence the notion that psychedelics expand your mind. While this sounds promising, the science on how these drugs work to treat depression is still being studied.
Are Psychedelics Safe?
Psychedelics also pose their own set of risks. Although they’re not generally considered to carry high addiction risk, there can be unpredictable short-term effects of psychedelics. Not least of these is a “bad trip,” which can include symptoms like extreme paranoia, anxiety, and loss of psychological control. While these symptoms usually subside within a relatively short period of time, they can lead users to place themselves in dangerous situations.6
Generally speaking, however, when intentionally therapeutic doses of ketamine or psychedelics are administered by professionals in safe environments, the risks to your safety are quite low.7
Finding the Right Rehab for Depression
If you’ve tried different treatment methods for depression and find yourself still struggling with this debilitating disorder, know that there is an abundance of treatment options out there, and some may work better for you than others. While ketamine or psychedelics may not be for you, a variety of other program offerings might be.
Find treatment centers specializing in ketamine-assisted therapy and talk to a support specialist about whether this approach is right for you.
FAQs
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National Institute of Mental Health (NIMH). Investigation of the Rapid (Next Day) Antidepressant Effects of an NMDA Antagonist. Clinical trial registration, NCT00088699, clinicaltrials.gov, 12 Sept. 2018. https://clinicaltrials.gov/study/NCT00088699
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Chen, J. "Treating Depression: An Expert Discusses Risks, Benefits of Ketamine." Yale Medicine. https://www.yalemedicine.org/news/ketamine-the-new-miracle-drug
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Vekhova KA, Namiot ED, Jonsson J, Schiöth HB. Ketamine and Esketamine in Clinical Trials: FDA-Approved and Emerging Indications, Trial Trends With Putative Mechanistic Explanations. Clin Pharmacol Ther. 2025 Feb;117(2):374-386. doi: 10.1002/cpt.3478. Epub 2024 Oct 20. PMID: 39428602; PMCID: PMC11739757. https://pmc.ncbi.nlm.nih.gov/articles/PMC11739757/
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Curran, H. V., & Monaghan, L. (2001). In and out of the K-hole: A comparison of the acute and residual effects of ketamine in frequent and infrequent ketamine users. Addiction (Abingdon, England), 96(5), 749–760. https://pubmed.ncbi.nlm.nih.gov/11331033/
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Carhart-Harris, R.L., Erritzoe, D., Haijen, E. et al. Psychedelics and connectedness. Psychopharmacology 235, 547–550 (2018). https://doi.org/10.1007/s00213-017-4701-y. https://link.springer.com/article/10.1007/s00213-017-4701-y
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McMains, V. Study explores the enduring positive, negative consequences of ingesting 'magic mushrooms'. Johns Hopkins University. https://hub.jhu.edu/2017/01/04/bad-trips-mushrooms/
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Serafini G, Howland RH, Rovedi F, Girardi P, Amore M. The role of ketamine in treatment-resistant depression: a systematic review. Curr Neuropharmacol. 2014 Sep;12(5):444-61. doi: 10.2174/1570159X12666140619204251. PMID: 25426012; PMCID: PMC4243034. https://pmc.ncbi.nlm.nih.gov/articles/PMC4243034/
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