If you’ve found yourself wondering what stopping ketamine actually feels like, or how long it takes to get through, you’re asking the right questions. Ketamine withdrawal is a little different from other drug withdrawals in that it’s more psychological than physical, which makes it easy to underestimate. It’s also the very reason why it shouldn’t be faced alone.
This page covers ketamine withdrawal, as well as the likely timeline, what treatment involves and where to turn if you decide to seek help.
What is Ketamine Withdrawal?
Ketamine withdrawal occurs when a person who uses ketamine heavily and regularly stops suddenly or cuts down their use. The brain has come to rely on the substance, so when it’s taken away, withdrawal symptoms start to present.
Ketamine is a dissociative anaesthetic and works mainly by blocking a receptor in the brain called the NMDA receptor. This receptor normally responds to glutamate, which is the brain’s main “switch-on” chemical messenger.
Ketamine’s effects dampen this system by slowing down the activity between nerve cells, which is why you feel sedated and detached when you use it.
With regular and heavy use, the brain adjusts to having that system constantly suppressed. So, when ketamine is removed, or the normal dose it’s used to is changed, the balance is thrown off. This then results in uncomfortable symptoms like low mood and cravings that are part of withdrawal.
While researchers have stated that a specific, clearly defined ketamine withdrawal syndrome hasn’t yet been established, it doesn’t suggest withdrawal isn’t difficult. The mood changes and physical discomfort experienced during ketamine withdrawal are tough to deal with alone.
Ketamine Withdrawal Symptoms
The types of ketamine withdrawal symptoms are grouped under three main areas: physical, psychological and cognitive. Some people will experience a mix of all three groups, with the psychological side of things compounding the others.
Physical symptoms
The physical side of ketamine withdrawal is more uncomfortable than it is dangerous, with common symptoms including:
Fatigue
Low energy
Disturbed sleep
Insomnia
Sweating
Shaking
Chills
Stomach pains
The last symptom, stomach pains, is one that can be viewed as a tip-of-the-iceberg situation and one that’s serious enough to need its own explanation.
Long-term ketamine use can cause a condition known as ketamine bladder, or more formally, ketamine-induced uropathy. This happens because ketamine and the by-products made by the body after taking it are toxic to the lining of the bladder. Long-term use can cause inflammation and scarring, which results in severe pain, stomach cramping (K-cramps), the need to urinate frequently and sometimes even blood in the urine.
In severe cases, ketamine bladder can lead to a shrunken or scarred bladder that requires surgical repair or removal. This means if you’re experiencing any bladder discomfort, it needs to be treated as a medical issue rather than assumed that it’s part of ketamine withdrawal.
Psychological Symptoms
Psychological symptoms from ketamine withdrawal include:
Intense cravings
Low mood
Depression
Anxiety
Irritability
Mood swings
Emotional flatness
Loss of interest in things once enjoyed
In some cases, the low mood experienced here can fuel mental health conditions like depression, and is the part of withdrawal that has the most risk, something which we cover in more detail later on.
Cognitive symptoms
Heavy and long-term ketamine use is linked to long-lasting difficulties with cognition, like memory and how sharp you feel mentally. Some of these effects can improve with time away from the drug, while other elements can linger for a period of time after.
Are you recognising these symptoms in yourself or someone else?
Ketamine withdrawal is hard to face alone, and you don’t have to. If any of this feels familiar, talking it through with someone who understands ketamine addiction can help you work out what to do next.
Ketamine Withdrawal Timeline
Before we get into the ketamine withdrawal timeline, one important point needs to be made. There’s no large study that explicitly states ketamine withdrawal day by day, and the small amount of case reports that do exist clash with each other on timing.
With this in mind, the information we present here is a general guide which draws on clinical experiences and how other, similar drugs behave, instead of a fixed schedule.
This means what you read below may differ from person to person and shouldn’t be viewed as a definitive guide.
Here’s how ketamine withdrawal usually unfolds across three main phases:
| Phase | Rough timeframe | What usually happens |
|---|---|---|
| Acute phase | 0 to 72 hours6 | The most intense stage that features strong cravings, anxiety, agitation and irritability, low mood, disturbed sleep. Physical symptoms include sweating, shaking, a racing heart and appetite loss. Distress usually peaks here. |
| Subacute phase | Days 3 to 14 | The sharpest physical symptoms ease, but cravings and mood disturbance carry on. Sleep problems and fatigue are common. Mood usually starts to stabilise towards the end of this window. |
| Post-acute phase | Weeks to months | Lingering cravings, low mood, emotional flatness and brain fog can persist. This is where relapse risk is highest, as the discomfort is milder but longer-lasting. |
The general idea here is that ketamine withdrawal has a fast onset, an early peak, with a slowly fading psychological tail.
If you come across another source that gives you a rigid schedule, along with an hour-by-hour breakdown, it should be treated with some caution.
Worried about getting through withdrawal?
Knowing what to expect is one thing; actually going through ketamine withdrawal is another thing entirely. If you feel worried about what’s to come, a confidential conversation can help you understand the treatment options you have available to you, or simply advice on where to start.
Can other factors affect how long ketamine withdrawal lasts?
A lot of what goes into the lack of certainty with a ketamine withdrawal timeline is due to the unique factors of each person that go through it.
For example, how much and how frequently someone used ketamine is one of the biggest factors. If someone has been using heavily for a long period of time, they can generally expect a longer withdrawal period.
If other drugs are used alongside ketamine, this is another factor that complicates the withdrawal process. Depressant drugs like alcohol or benzodiazepines bring their own withdrawal risk, and if they’re also frequently used alongside ketamine, the withdrawal timeline extends.
The state of the person’s mental health also plays a big role in withdrawal because existing mental health conditions can prolong the withdrawal timeline.
Overall physical health and even the strength of the person’s support network around them at the time of withdrawal all add to the uncertainty of how withdrawal will be experienced by any given person.
This is exactly why a personalised support plan during ketamine withdrawal works much better than a uniform approach.
Is Ketamine Withdrawal Dangerous?
This is a question that gets asked a lot, so it’s an answer that deserves its own section in order to clear any misconceptions.
Ketamine withdrawal is not usually life-threatening in the way other drugs, like alcohol, can be and in purely physical terms, most will come through the acute phase without medical emergency.
This, by no means, suggests that ketamine withdrawal is completely risk free and when we combine the other factors we covered in the last section, the dangers deserve the spotlight.
Mental health
If a person is dealing with a mental health condition like depression, ketamine withdrawal can become dangerous. This is because the drop in mood after stopping can be severe and potentially lead to suicidal thoughts, as highlighted in case reviews.5
If you’re currently experiencing thoughts of self harm or suicide, its crucial to reach out for help as soon as possible. Contact NHS 111 or, in more urgent cases, 999 emergency services.
Relapse
Cravings can be very powerful during ketamine withdrawal and if you’re dealing with low mood, it can make taking the drug again feel tempting.
The danger here lies in tolerance, as a period of time away from ketamine means that your tolerance lowers. If you then relapse and take the dose of ketamine you’re usually used to, it carries the risk of overdose. Ketamine overdose is serious, and if it occurs without support around you, it could be fatal.
What we see with both of these points here is how dangerous the psychological factors that go into ketamine withdrawal can be. It also makes the case that ketamine withdrawal shouldn’t be faced alone. For more information on this topic, make sure to view our page on the dangers and side effects of ketamine.
What Ketamine Detox and Treatment Involves
Across the page so far, we’ve made it clear that ketamine withdrawal is something that shouldn’t be dealt with alone.
Professional treatment should be considered instead, which follows a clear, medically supported path.
Assessment
Ketamine detox starts with an assessment, which is a chance to understand the person’s history with ketamine, current usage, physical and mental health and any complications like bladder damage that need addressing before treatment can begin.
Detox
Once the information has been taken, it can then be used to create a personalised medically supported detox that can commence. This helps the person through the acute phase, with medical supervision to manage symptoms safely and keep a close eye on the person’s mental health. Detoxing at home increases the risk of complications, especially if mood or bladder issues worsen.
Therapy
Due to the ketamine withdrawal being largely psychological, the main focus point of treatment is therapy rather than medication.
Therapies like cognitive behavioural therapy help people understand what triggers them into using ketamine, as well as helping them to build coping strategies to deal with cravings in the future.
Other therapies are used in tandem with CBT that include:
Motivational work, which helps someone strengthen their own reasons for wanting to quit ketamine
Group sessions, which eliminate the feelings of isolation that are a common feature of most drug addictions, not just ketamine.
Relapse prevention planning, which gives people concrete strategies for the life moments that require extra support.
Aftercare
The final part of treatment is aftercare, which is considered to be one of the most important aspects of treatment. The weeks and months after detox are where the risk of relapse is at its highest, so ongoing support is what helps recovery. Support can include ongoing therapy or access to structured aftercare plans that have been created by the treatment provider themselves.
Why Medically Supervised Ketamine Detox is Recommended
Now that the outline of treatment is clear, it’s much easier to visualise the benefits of medical support.
For example, a supervised detox means someone is watching for the drops in mood that can happen during withdrawal and support is on hand should more serious aspects of mental health decline. We’ve mentioned quite often how ketamine withdrawal’s biggest danger is the psychological side of things, so having that safety net is incredibly important.
Also, being in an environment away from the triggers and access that fuel ketamine use, and under the supervision of people who understand what’s happening, gives a person a far better chance of getting through the toughest peaks.
Bladder issues are something that will be caught in the assessment, which means that if there are issues during withdrawal, they’re dealt with by a medical professional rather than being missed alone.
Where can I find Professional Support for Ketamine Withdrawals?
In the UK, help is available for free through NHS drug and alcohol services or through charities such as With You and Change Grow.
If you’d prefer private residential ketamine rehab, which usually offers faster access and a more intensive programme, PCP Rehab can offer more information on this.
Talk to FRANK also provides free, confidential advice for anyone wanting to understand their options before committing to anything.
Understanding the differences between free and paid ketamine treatment is important in order to make a decision that’s right for your situation.
Getting Help With Ketamine
There are no set parameters that you need to hit in order to reach out for help. Many people get in touch simply to understand what they’re dealing with and what support might look like.
At Rehab Today, that starts with a confidential conversation, where we can talk through the services that fit your situation. There’s also the chance to learn about the support options available for any bladder or mental health complications that may be sitting alongside ketamine use.
We provide drug and alcohol detox and rehabilitation within a safe, CQC-registered facility in Luton, so if you do decide to move on with treatment, we’re ready and waiting to provide it for you.
Whenever you’re ready, contact PCP Rehab Today for more information.
Frequently Asked Questions
How long does ketamine take to leave your system?
Ketamine has a short half-life, so it clears the bloodstream within about a day. Traces last longer elsewhere. It’s usually detectable in urine for three to six days, in saliva for one to three days, and in hair for up to around ninety days.
Can ketamine withdrawal cause rebound depression?
Yes. Low mood is one of the most common psychological symptoms of withdrawal, and for some people it deepens into a rebound depression after stopping. This is documented in medical case reports. It’s also the reason mental health support during withdrawal matters so much.
What helps you get through ketamine withdrawal?
The most important step is not doing it alone. A medical assessment, support with cravings, and treatment for any low mood all make a real difference. Removing access to the drug and leaning on people you trust helps too, whether that’s professionals or loved ones.
