Ketamine started as a medication used for anesthesia, but today it’s also used in therapeutic settings and recreationally. But like many substances that alter brain chemistry, regular ketamine use can lead your body to adapt and depend on it, meaning you might have withdrawal symptoms when you decide to stop.
Whether you’re personally navigating ketamine use, exploring treatment possibilities, or supporting a loved one through their journey to quit, understanding withdrawal can make the path forward clearer. Let’s explore what happens when ketamine leaves your system, how to manage the process safely, and what support options can help ease the transition back to life without it.
Ketamine is a medication1 that first appeared in the ’60s as an anesthetic for surgeries. It works by blocking certain chemical receptors in your brain, which makes you feel disconnected from pain, negative emotions, and your surroundings. Doctors and medical teams still use ketamine today in hospitals for procedures requiring sedation.
In recent years, doctors started using ketamine to treat certain mental health conditions.2 In controlled medical settings, it can promote healing for people struggling with treatment-resistant depression, severe anxiety, or PTSD.
Some people also use ketamine recreationally for its dissociative effects—a feeling of detachment from reality, visual distortions, and euphoria. On the street, you might hear it called “special K,” “ket,” “kit kat,” or simply “K.”
Ketamine affects your brain3 by blocking NMDA receptors, which help with memory, learning, and pain perception. It also boosts levels of a brain chemical called glutamate and may affect other neurotransmitters like dopamine—one of your brain’s most important “feel-good” chemicals.
When ketamine becomes a regular part of your life, your body adjusts. You’ll likely need more to feel the same effects (tolerance), which can cause you to develop physical and psychological dependence, leaving you with withdrawal symptoms when you stop.
Not everyone who uses ketamine will develop a drug addiction, but regular use can make you dependent. Spotting the signs of ketamine addiction early can help you recognize when casual use has crossed into problematic territory.
When ketamine use has become an addiction, your body might signal problems through:
You might notice bladder problems like needing to pee frequently or having pain when you do—a condition sometimes called “K-bladder“4 that can become serious if you continue using.
One report from ITV News highlights the growing crisis of ketamine-related bladder damage among young people5 in the UK. Dan Parker, a 23-year-old former electrician who nearly lost the use of his bladder after just months of daily ketamine use, recalls his experience of ketamine dependence:
I had it all to lose—everything to lose. Family, friends, relationships, my son. Everything else was gone.
Unlike substances that take decades to cause significant organ damage, ketamine can irreversibly harm the bladder6 in a much shorter timeframe.
Ketamine is a drug that can mess with both the body and the brain. When a person stops using ketamine, they will start to go through intense withdrawal, causing symptoms of extreme cravings for ketamine, anxiety, fatigue, and confusion. Some may experience psychosis, loss of motor skills, rage, nausea, ‘the shakes’, a decrease in cardiac or respiratory functions, insomnia, hearing loss, and cognitive impairment. It takes time for the body to get back to normal while going through ketamine detox. Medical support is highly recommended for a safer, more controlled withdrawal process.
Janelle Salo, RN | Healthy Earth Living
Just like with other types of substance abuse, ketamine can reshape your daily habits and priorities. You might catch yourself:
Ketamine can significantly change how your brain functions,7 affecting your thoughts and emotions. You might struggle with:
Many people also experience waves of depression and anxiety, especially after a dose of ketamine when the effects start to wear off.
When ketamine starts taking center stage, things can start to unravel around you. Maybe you continue using even though it’s causing problems with your health, your relationships, or your job. If you’ve tried to cut back or stop but found it surprisingly difficult, that’s actually a common experience—and a sign that recreational drug use may have developed into something more serious.
When ketamine becomes a regular part of your routine, your brain gets used to having it around. Your brain chemistry actually adapts to function with ketamine in your system. When you decide to stop or cut back, your body needs time to reset—which causes withdrawals.
Your brain has a delicate chemical balance. Ketamine affects special receptors8 that control how you think, feel, and how your body works. With ongoing use, these receptors become less responsive, and your brain produces different levels of natural chemicals to maintain equilibrium. When you suddenly remove ketamine from this equation, things get out of balance until your brain can rebuild its natural systems. This adjustment period is what we call withdrawal.
Ketamine, a sedative generally used for the sedation of animals, has been used widely over the years by humans for recreational purposes. Many people use drugs like ketamine to self-medicate for mental health issues, trauma, grief, abandonment, and other human experiences. As with any substance that a person takes consistently over time, it can become a source of addiction. If someone is struggling with ceasing ketamine use on their own, self-help groups, individual therapy, intensive outpatient treatment, and residential treatment can be considered.
Tanya Kraege LCSW, CSAC, CCAR RC, WI CPS | Ventus Rex
While ketamine withdrawal symptoms aren’t typically dangerous,1 it can certainly be uncomfortable. You might experience:
Some people find that the mental and emotional aspects of ketamine withdrawal9 hit harder than the physical symptoms. Feeling down and fighting those persistent cravings can be especially challenging.
While ketamine withdrawal isn’t typically life-threatening like alcohol or benzodiazepine withdrawal, some people do experience more severe reactions. Research in the American Journal of Psychiatry highlights cases where people felt extreme agitation and intense mood swings when they stopped taking ketamine10 cold turkey. In one case, a person who had been taking large amounts of ketamine regularly became highly distressed—hitting walls, yelling, and behaving erratically until he received proper medical help.
Medical professionals are still working to understand these more intense withdrawal experiences, and there’s no clear definition of what “typical” ketamine withdrawal looks like. For those who use heavily and frequently, symptoms can become acute enough to seriously disrupt daily life. This is why it’s safest to quit ketamine with professional guidance, especially if you’ve been using ketamine regularly for a long time.
Everyone’s body responds differently to withdrawal, but research shows that ketamine withdrawals can kick in just 24 hours after the last dose.11 Physical withdrawals are usually short-term, but some psychological symptoms—like cravings, mood fluctuations, and sleep troubles—might stick around for longer.
For some people, withdrawal symptoms last longer than expected. Learn more about this extended recovery process and how to navigate it in our guide to post-acute withdrawal syndrome (PAWS).
Ketamine withdrawal symptoms can vary widely from person to person, depending on various factors, including the frequency and amount of ketamine use, as well as individual physiology. Typically, acute withdrawal symptoms may begin within a few days (72 hours) after cessation and can last for about one to two weeks, though sometimes longer. Physiological symptoms to note may include delusions, double vision, fatigue, hallucinations, hearing loss, shakes, insomnia, nausea, rage, and rapid breathing, among others. Individuals may also experience lingering psychological symptoms (e.g., anxiety, depression), which could persist for several weeks or even months and oftentimes require additional attention through counseling, group support, and otherwise.
Matthew Glowiak, PhD, LCPC, CAADC, ACS, NCC | Hazelden Betty Ford Graduate School
How intense your withdrawal experience feels depends on several personal factors:
Withdrawals can test your resolve, both physically and mentally—they’re actually one of the main reasons people return to using. But it’s good to keep in mind that withdrawal is temporary, and with the right support in your corner, you absolutely can make it through this challenging phase of recovery.
While ketamine addiction is certainly treated in professional settings, the concept of “detoxification” for ketamine differs from substances like alcohol, opioids, or benzodiazepines. Unlike those substances, ketamine doesn’t typically cause severe physical withdrawal symptoms12 that require medical management. Most ketamine users don’t need the same kind of monitored detox process that’s necessary for substances that cause more dangerous withdrawals.
When you get treatment for ketamine addiction, the process usually focuses more on:
For people who have been using ketamine heavily or in combination with other substances, a more structured environment during the early days of abstinence can still be very beneficial for monitoring mood, providing support, and ensuring a successful transition to your treatment program.
While ketamine withdrawal isn’t typically severe or physically dangerous, professional support during this time can still be invaluable. Treatment providers can help manage psychological issues like depression and cravings, address any co-occurring mental health concerns, and provide structure and accountability to prevent relapse.
For many people, having this support significantly increases their chances of staying on track toward long-term recovery, especially if they’ve used ketamine heavily or for an extended time.
While ketamine shows promising therapeutic benefits for depression and PTSD in clinical settings, we shouldn’t overlook its potential for addiction. Saturn, who has used ketamine extensively13 over the years, shares an honest perspective:
We all have tendencies to get addicted to things pretty easily, especially if you have a lot of traumas and stuff you’ve been through… Basically, if you use illegal drugs and have self-discipline and you do use them as a tool instead of partying, it could help some people. But some drugs some people shouldn’t be taking. We’re all different… I’ve learned that if you do too much of anything, it’s really bad for you.
His view reminds us that what works as medicine for one person might become problematic for another. Many people who initially try ketamine for its mood-lifting side effects don’t anticipate developing a substance use disorder. He recalls what a close friend went through:
One of my best friends was stuck on [ketamine] and he was about to have a kid and he had to get off of it before he had a kid and he was struggling really hard. Him and his wife… they had to get help, they couldn’t do it on their own. So yeah, it can be heavily addictive.
These experiences remind us that while medical ketamine treatments are carefully controlled, recreational use of ketamine carries real risks of developing dependence that often requires professional help to overcome.
The support you choose for your recovery journey can make all the difference in your long-term success.
Many people benefit from inpatient rehab programs where you live at a treatment facility for 30-90 days. These programs offer structure, daily therapy, and a recovery-focused environment away from triggers and temptations.
In rehab, your care team will create a treatment plan for you that includes a combination of therapies such as:
Joining groups like Narcotics Anonymous or SMART Recovery provides ongoing encouragement and accountability when formal treatment ends.
If total abstinence doesn’t feel achievable right now, harm reduction strategies can help you use more safely:
In addiction recovery, healthy social support makes all the difference. Supportive friends, family members, or professionals can encourage you when cravings hit hard or when you’re feeling low. Remember that asking for help isn’t a burden—it’s actually a sign of strength and commitment to your recovery.
Taking steps toward recovery from ketamine use shows incredible courage! Whether you’re just starting to question your relationship with ketamine or you’re ready to start treatment, support is available every step of the way.
Ready to explore your options? Our treatment finder can connect you with ketamine addiction treatment centers that match your specific needs. These centers offer specialized support to help you navigate withdrawal, develop coping skills, and build a fulfilling life beyond ketamine use—because you deserve the chance to reclaim your health and well-being.
A: Ketamine detox is the process of clearing the drug from your system while managing withdrawal symptoms, either through medical supervision or self-management with support. In medically supervised detox, healthcare professionals monitor your vital signs, may provide medications to manage symptoms like anxiety or insomnia, and offer emotional support throughout the withdrawal process.
A: While not always medically necessary, medical supervision makes ketamine withdrawal safer and more comfortable. Consider seeking medical detox if:
Ketamine - an Overview | ScienceDirect Topics. https://www.sciencedirect.com/topics/neuroscience/ketamine. Accessed 11 Apr. 2025.
MD, Peter Grinspoon. “Ketamine for Treatment-Resistant Depression: When and Where Is It Safe?” Harvard Health, 9 Aug. 2022, https://www.health.harvard.edu/blog/ketamine-for-treatment-resistant-depression-when-and-where-is-it-safe-202208092797.
Li L, Vlisides PE. Ketamine: 50 Years of Modulating the Mind. Front Hum Neurosci. 2016 Nov 29;10:612. doi: 10.3389/fnhum.2016.00612. PMID: 27965560; PMCID: PMC5126726.
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ITV News. (2023, October 9). 'I lost everything': Inside Britain's 'worrying' ketamine problem [Video]. YouTube. https://www.youtube.com/watch?v=ocuulBxy5tg
Srirangam S, Mercer J. Ketamine bladder syndrome: an important differential diagnosis when assessing a patient with persistent lower urinary tract symptoms. BMJ Case Rep. 2012 Sep 30;2012:bcr2012006447. doi: 10.1136/bcr-2012-006447. PMID: 23035160; PMCID: PMC4544340.
Shea, C. D. (2023, December 4). New study maps ketamine's effects on brain. Columbia News. https://news.columbia.edu/news/new-study-maps-ketamines-effects-brain
Galvanho, Jefferson P., et al. “Profiling of Behavioral Effects Evoked by Ketamine and the Role of 5HT2 and D2 Receptors in Ketamine-Induced Locomotor Sensitization in Mice.” Progress in Neuro-Psychopharmacology and Biological Psychiatry, vol. 97, Mar. 2020, p. 109775. ScienceDirect, https://doi.org/10.1016/j.pnpbp.2019.109775.
Healthdirect Australia. Ketamine. 21 Nov. 2024, https://www.healthdirect.gov.au/ketamine.
Roxas, Nichole, et al. “A Potential Case of Acute Ketamine Withdrawal: Clinical Implications for the Treatment of Refractory Depression.” American Journal of Psychiatry, vol. 178, no. 7, July 2021, pp. 588–91. DOI.org (Crossref), https://doi.org/10.1176/appi.ajp.2020.20101480.
Roxas, Nichole, et al. “A Potential Case of Acute Ketamine Withdrawal: Clinical Implications for the Treatment of Refractory Depression.” American Journal of Psychiatry, vol. 178, no. 7, July 2021, pp. 588–91. DOI.org (Crossref), https://doi.org/10.1176/appi.ajp.2020.20101480.
Center for Substance Abuse Treatment. (2006). Detoxification and substance abuse treatment (Treatment Improvement Protocol Series No. 45; HHS Publication No. SMA 15-4131). U.S. Department of Health and Human Services, Substance Abuse and Mental Health Services Administration. https://library.samhsa.gov/sites/default/files/sma15-4131.pdf
VICE News. (2023, October 5). How ketamine is being used to treat depression [Video]. YouTube. https://www.youtube.com/watch?v=-Z6FQXZcgKY
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