What Happens in an Overdose of Ketamine
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Ketamine is a medicine that doctors use in hospitals, in carefully controlled amounts, for anaesthesia and for certain kinds of pain. Outside a hospital, it is also used as a recreational drug, and that is where the danger grows. In a hospital, the dose is measured, the patient is watched closely, and help is standing by. On the street, none of that is true. Nobody knows exactly how strong the powder or liquid is, nobody knows what else has been mixed into it, and nobody is watching the person’s breathing or heart. That gap between a controlled medical setting and uncontrolled use is where an overdose happens.
An overdose of ketamine does not always look dramatic at first. It can begin with a person becoming very confused, very sleepy, or unable to move or speak properly. It can move on to slow or shallow breathing, a dangerously fast or irregular heartbeat, vomiting, seizures, a sharp rise in body temperature, and loss of consciousness. In the worst cases, breathing stops, the heart fails, and the person dies. The speed of that change is part of what makes it frightening. A person who seemed awake and talking can become unresponsive in a short time, and the people around them may not realise how serious the situation has become until it is almost too late.
This article explains, in plain words, what happens to the body during a ketamine overdose: how the drug affects the brain, the heart and the lungs, what warning signs to watch for, why overdoses happen, and why it must always be treated as a medical emergency. It is general information only, not individual medical advice. If someone may have taken too much ketamine, call your local emergency number at once and stay with them until help arrives. Tell the responders, honestly, what was taken, so they can give the right care.
What Ketamine Does in the Body
Ketamine belongs to a group of drugs called dissociatives. That word describes its main effect: it disconnects a person from their surroundings, from their body, and sometimes from their sense of who they are. At low amounts, this can feel like floating, or like the room has gone distant and unreal. Sounds may seem far away, the body may feel light or heavy in a strange way, and ordinary thoughts may feel hard to hold on to. At higher amounts, the disconnection becomes much deeper. A person may not know where they are, may not recognise the people around them, and may not be able to move, speak or respond at all.
The drug works by blocking signals in the brain. It interferes with a chemical messenger called glutamate, which the brain uses to pass messages between nerve cells. When those messages are blocked, the brain cannot process what the senses are telling it in the normal way. Pain signals are dulled, which is why ketamine is useful as an anaesthetic in surgery, but so are the signals that tell the brain where the body is, what is happening around it, and whether something is wrong. That is why a person on a large amount of ketamine can be injured and not notice, can choke and not react, or can lie in a dangerous position for a long time without realising it.
The amount matters enormously, and that is the first problem with recreational use. Medical ketamine is measured precisely, down to tiny amounts, and adjusted for the person’s weight and condition. Street ketamine is not. One batch may be far stronger than another, and one person’s body may react very differently from another’s. A person who is smaller, who has not eaten, who is tired or ill, or who has used alcohol or other drugs at the same time, can be affected far more strongly by the same amount. There is no safe amount outside medical care, because there is no way to know how strong the drug is or how a particular body will respond to it.
The effects also depend on how the drug is taken. Swallowing it takes longer to act, and the effect builds more slowly. Snorting it or injecting it acts faster, and the peak can arrive suddenly. That sudden peak is dangerous, because the person has no time to adjust or to ask for help. They may feel fine one minute and be unable to move or speak the next. The drug’s effects usually last for an hour or two, but the after-effects, such as confusion, poor coordination and a feeling of being unreal, can linger much longer. During that whole time, the person is vulnerable, and if something goes wrong with their breathing or their heart, they may not be able to call for help themselves.
An Overdose Is a Medical Emergency
An overdose means the body has taken in more of a drug than it can cope with, and ketamine overdose is always a medical emergency. It is not something to sleep off, and it is not something to wait and see about. The drug affects the brain, the heart, the lungs and the body’s temperature control all at the same time, and when several of those systems are struggling together, the situation can worsen very quickly. The most important thing anyone can do is to get professional help as fast as possible, by calling the local emergency number and staying with the person until the ambulance arrives.
One of the hardest things about a ketamine overdose is that the person often cannot help themselves. Ketamine can make a person unable to move, unable to speak, and unable to understand what is happening to them. They may be awake but frozen, aware of voices around them but unable to answer. They may be unconscious and unable to respond to pain or shouting. In that state, they cannot tell anyone what they took, how much they took, or what else they may have taken with it. That is why the people around them matter so much. If you are with someone who has taken ketamine and they become unresponsive, confused, or very ill, your call for help may be the thing that saves them.
Emergency responders and hospital staff deal with drug overdoses regularly, and they are not there to judge or to punish. They need honest information: what was taken, roughly how much, when it was taken, and whether alcohol or any other drug was used as well. That information helps them decide what to check first, what to monitor, and what treatment the person needs. In a hospital, the person can be given oxygen, their breathing and heartbeat can be watched continuously, and they can be kept safe while the drug wears off. None of that can happen at home. Waiting, hoping the person will wake up on their own, is the most dangerous choice, because by the time it becomes obvious that they are not waking up, their breathing or heart may already be failing.
There is also a real risk that the people around an overdose are afraid to call for help because they worry about the police or about getting into trouble. That fear has cost lives. In many places, emergency services are focused on saving the person, not on punishing the people who called. Whatever the law is where you live, a life is worth more than the fear of trouble. Call for help, stay with the person, and tell the truth about what happened. That is the one decision that matters most in the first minutes of an overdose.
The Heart in Crisis
Ketamine affects the heart and the blood vessels in ways that can become dangerous when too much is taken. In medical use, doctors expect a rise in heart rate and blood pressure, and they watch for it. In an overdose, that rise can become extreme. The heart may beat very fast, very hard, or in an irregular rhythm. Blood pressure may climb to a level that puts strain on the heart itself and on the blood vessels in the brain. For a healthy young person, the heart may be able to cope with that strain for a while. For someone with an undiagnosed heart problem, high blood pressure, or a heart that is already weakened, the strain can be enough to cause serious damage.
An irregular heartbeat is one of the most frightening effects, because it can come on without much warning. The heart is an electrical organ as well as a muscular one, and drugs that disturb the brain’s signalling can also disturb the signals that keep the heartbeat steady. When the rhythm becomes chaotic, the heart cannot pump blood properly. Blood stops reaching the brain and the rest of the body in the amounts they need. The person may feel their chest pounding, or they may feel nothing at all, because they are too confused or unconscious to notice. In the worst cases, the heart can stop altogether, and without immediate help, the person will not survive.
The risk is much greater when ketamine is combined with other substances. Alcohol, stimulants and other drugs each affect the heart in their own way, and together they can push it far beyond what it can handle. A stimulant can drive the heart rate even higher. Alcohol can make the person vomit while they are unable to protect their own airway. Other sedatives can deepen the breathing problems that ketamine already causes. Many of the most serious ketamine overdoses reported in hospitals involve more than one substance, and the combination is often what turns a bad situation into a fatal one. That is another reason why honest information about everything the person took matters so much to the doctors treating them.
The heart does not always recover fully after a serious overdose. A period of very high blood pressure, a dangerously fast heartbeat, or a time when the heart was not pumping properly can leave lasting damage. The heart muscle can be strained, the blood vessels can be damaged, and the risk of future heart problems can rise. People who survive a severe overdose sometimes find that their heart is not the same afterwards, and that they tire more easily or feel their heart racing in situations that never bothered them before. The heart is not a machine that can simply be switched off and on again without consequence. Every crisis leaves its mark.
The Brain in Danger
The brain is where ketamine does its most obvious work, and it is also where an overdose can do the most lasting harm. At high amounts, the drug can cause severe confusion, agitation, hallucinations and a complete loss of contact with reality. A person may believe things that are not true, may see or hear things that are not there, and may become frightened or aggressive in a way that is out of character. They may try to run, to fight, or to escape from dangers that exist only in their mind, and in doing so they may injure themselves badly. They may fall from a height, walk into traffic, or hurt themselves in ways they would never do if their thinking were clear.
Seizures are one of the most serious brain effects of an overdose. A seizure is a sudden burst of uncontrolled electrical activity in the brain, and it can cause the body to shake violently, the muscles to stiffen, and the person to lose consciousness. During a seizure, a person cannot protect their own airway, and they can injure themselves on hard surfaces around them. Seizures can also be repeated, one after another, and each one puts more strain on the brain. After a seizure, the person is often deeply confused, exhausted and unable to remember what happened. A seizure during an overdose is a sign that the brain is in serious trouble, and it needs urgent medical care.
There is also the risk of direct damage to the brain from lack of oxygen. When breathing becomes slow and shallow, or stops altogether, the brain is starved of the oxygen it needs to survive. Brain cells begin to die within minutes of being starved of oxygen, and the longer the shortage lasts, the more damage is done. This is why slow breathing in an overdose is so dangerous, even if the person is still alive. A person who is rescued after a long period of poor breathing may survive, but may be left with lasting problems with memory, thinking, concentration or movement. The brain does not heal the way skin heals. Damage to brain cells is often permanent, and the person may never fully return to how they were before.
The psychological after-effects can also last long after the drug has left the body. Some people who have had a severe ketamine experience, or an overdose, report lasting anxiety, disturbing memories, flashbacks, or a feeling that the world is not quite real. These effects can last for days, weeks or longer, and they can make ordinary life feel frightening and confusing. The mind, like the brain itself, needs time to recover from a severe disruption, and for some people that recovery is slow and incomplete. An overdose is not just a bad night. It can change how a person thinks and feels for a long time afterwards.
Breathing Under Threat
Breathing is the most immediate danger in a ketamine overdose, and it is the reason so many overdoses turn fatal. Ketamine depresses the brain’s control of breathing. At medical doses, that effect is watched closely, and the patient’s breathing is supported if needed. At overdose levels, breathing can become slow, shallow and irregular, and then it can stop. The person may take long pauses between breaths, or their breathing may become so quiet and shallow that the people around them do not even notice it has changed. That quietness is deceptive. A person who is breathing very slowly is not getting enough oxygen, and their body is slowly shutting down.
The danger is made worse by the fact that ketamine can make a person unable to protect their own airway. A conscious person who vomits will turn their head, cough, and clear their throat. A person who is deeply affected by ketamine may vomit while lying on their back and be unable to move, cough or turn. The vomit can block the airway, or be breathed into the lungs, and the person can choke or suffocate. This is one of the most common ways that people die in drug overdoses, and it is entirely preventable if someone is watching and gets help in time. Never leave a person who has taken a large amount of ketamine alone, and never assume they will be fine if they fall asleep.
The lungs themselves can also be harmed. Breathing in vomit can cause a serious lung infection or inflammation that needs hospital treatment. Long periods of shallow breathing can allow fluid to build up in the lungs. The chest muscles, which must work to draw air in, can become exhausted. All of these problems can develop even if the person survives the first hours of the overdose, and they can make recovery slow and difficult. A person who seemed to be recovering may become ill again hours later, as lung damage makes itself felt. That is why hospital observation matters, even after the person wakes up. Waking up does not mean the danger has passed.
It is worth understanding how quickly a breathing crisis can develop. A person can go from breathing normally to breathing dangerously slowly in a matter of minutes, especially if they have taken a large amount at once, or if they have mixed ketamine with alcohol or other drugs that also slow breathing. The change may be gradual enough that the people around them do not notice it at first, especially in a dark room, at a party, or late at night. That is why anyone who has taken ketamine should be watched by someone who is sober, and why any sign of slow, noisy or irregular breathing should be treated as an emergency, not as a reason to wait.
Heat, Seizures and Collapse
A sharp rise in body temperature is another dangerous effect of a ketamine overdose, and it is easy to overlook. Ketamine can disturb the brain’s control of body temperature, and the person may also be moving, struggling or seizing, which generates more heat. In a hot, crowded room, or after dancing or physical activity, the temperature can climb even higher. A body temperature that rises too far can damage the brain, the muscles and the kidneys, and it can be fatal. The person may feel hot and sweaty, or their skin may feel hot to the touch, but they may be too confused to say so, and the people around them may not think to check.
Muscle damage is one of the consequences of very high body temperature combined with seizures or long periods of lying still. When muscles are damaged, they release substances into the blood that the kidneys must filter out. If too much of that material reaches the kidneys at once, the kidneys can fail. Kidney failure is a serious and sometimes permanent consequence of a severe overdose, and it can require dialysis, which is a treatment that cleans the blood when the kidneys cannot. A person who survives an overdose may therefore face weeks or months of hospital treatment, and in some cases, lasting kidney damage that changes their life.
Collapse is the final stage of an overdose, and it can arrive suddenly. The person may fall, lose consciousness, and stop responding to voice or touch. Their breathing may become very slow or stop, their skin may become pale or bluish, and their body may become limp. At this point, every minute matters. The longer the brain goes without oxygen, the worse the damage becomes. Calling for emergency help at the first sign of trouble, rather than waiting for collapse, is what gives the person the best chance. If a person has collapsed, do not try to move them more than is necessary, do not give them anything to eat or drink, and do not leave them alone. Call for help and stay with them until it arrives.
The combination of high temperature, seizures and collapse is what makes a ketamine overdose so much more dangerous than the drug’s ordinary effects. Any one of those problems on its own would be serious. Together, they can overwhelm the body in a short time. That is why doctors treat every suspected overdose as urgent, even if the person seems to be improving. The body can be in trouble in ways that are not visible from the outside, and only hospital monitoring can show whether the heart, the lungs, the kidneys and the brain are all recovering safely.
Warning Signs Nobody Should Ignore
Knowing the warning signs of a ketamine overdose can save a life, because the earlier help is called, the better the chances are. The first signs are often changes in how the person behaves. They may become very confused, unable to answer simple questions, unable to recognise where they are, or unable to speak clearly. They may seem extremely sleepy, or they may drift in and out of consciousness. They may be unable to stand, walk or move their arms and legs properly. Any of these changes, after ketamine use, should be taken seriously.
Physical signs are just as important. Slow, shallow or irregular breathing is one of the most dangerous signs, and it should never be ignored. A heartbeat that is very fast, very slow, or irregular is another. Skin that is pale, bluish, clammy or very hot can be a sign that the body is in trouble. Vomiting, especially in a person who cannot sit up or turn their head, is an emergency. Seizures, stiffening of the body, or violent shaking are emergencies. A person who cannot be woken by shouting or by gentle shaking is in a medical emergency, and help must be called at once.
There are also signs that are easy to miss, and that is what makes them dangerous. A person may seem to be sleeping peacefully, but their breathing may be dangerously slow. A person may seem calm, but their body temperature may be climbing. A person may seem to be recovering, and then become worse again as the drug’s effects deepen or as complications develop. That is why it is never safe to leave someone alone after they have taken a large amount of ketamine, or to assume that sleep means safety. Staying with them, watching their breathing, and being ready to call for help is the only safe approach.
If you are with someone who shows any of these signs, the steps are simple: call your local emergency number immediately, stay with the person, and tell the responders what was taken and when. Do not wait to see if they get better on their own. Do not try to treat them yourself. Do not give them anything to eat or drink, and do not try to make them vomit. Your job is to get professional help as fast as you can, and to stay with them until it arrives. That call, made early, is the single most important thing you can do.
Why Overdose Happens
Overdoses do not usually happen because a person planned to take too much. They happen because of uncertainty, mixing, and circumstance. The most common reason is that the strength of street ketamine is unknown. One batch may be far stronger than the last, and a person who takes the amount they took last time may be taking much more than they realise. The powder may also be mixed with other substances, some of which are far more dangerous than ketamine itself. There is no label, no quality control, and no way to check what is in it before it is taken.
Mixing is the second major reason. Many overdoses happen when ketamine is taken together with alcohol, or with other drugs. Alcohol and ketamine both slow breathing and dull the brain’s awareness, and together their effects are far stronger than either one alone. Stimulants can push the heart to a dangerous rate. Other sedatives can deepen unconsciousness and breathing problems. A person who feels fine after one substance may not realise how much the second one has changed the picture, and by the time they do, it may be too late to act. The safest choice is not to mix, and the next safest is to understand that mixing makes an overdose far more likely.
Tolerance and habit play a part too. A person who has used ketamine regularly may need more of it to feel the same effect, and they may take larger and larger amounts over time. That rising amount brings them closer to a dangerous level, and the gap between the amount that gives them the feeling they want and the amount that harms them can become very small. A person who has not used it for a while, and then returns to their old amount, can also overdose, because their body is no longer used to it. Tolerance is not protection. It is a sign that the body has adapted to the drug, and that adaptation can hide how close to danger the person really is.
The setting matters as well. Taking ketamine alone, late at night, in a place where nobody is watching, means that if something goes wrong, nobody will notice. Taking it at a crowded party can also be dangerous, because the noise, the dark and the confusion can hide the signs that someone is in trouble. A person who collapses in a corner may not be found for a long time. The setting does not change what the drug does to the body, but it changes whether help arrives in time. An overdose that is seen early and treated quickly can end very differently from one that is found late, and that difference is often about who was there and whether they acted.
My Take:
What stays with me after reading about ketamine overdose is how fast it can happen, and how little warning there can be. A person can seem fine, and then they are not, and the people around them are left trying to work out what went wrong. That speed is what frightens me most. We are used to thinking that harm builds slowly, that there will be time to notice and to act, but an overdose does not always give you that time. It can turn a normal evening into an emergency in minutes, and the difference between life and death can be whether someone nearby knew what to look for and called for help straight away.
I think the part that does not get talked about enough is how alone a person can be in an overdose. Ketamine takes away the ability to move, to speak and to ask for help, and that is a terrible position to be in. You are trapped inside a body that will not respond, and you cannot tell anyone that you are in trouble. That is why I keep coming back to the people around the person, the friends, the partner, the people at the party. They are the only ones who can act, and they need to know that waiting is the most dangerous thing they can do. If you are ever in that position, call for help first and ask questions later. A false alarm is nothing. A late call can be everything.
I also think we need to be honest about why people take ketamine in the first place, because judgement does not help anyone. People take it to escape stress, to feel something different, to belong to a group, or because they are curious. None of those reasons make them foolish or bad. They make them human, and they make them vulnerable to a drug that is far less predictable than they think. The drug does not care why you took it. It acts on the brain, the heart and the lungs in the same way, whatever your reason was. Understanding that, without blame, is the only way to have an honest conversation about it.
The mixing of drugs is something I feel strongly about, because it is so common and so misunderstood. People think that because they have mixed before and been fine, they will be fine again, but that is not how it works. Each time is different, because the strength is different, the body is different, and the combination is different. Alcohol and ketamine together are a particularly dangerous pair, because both slow breathing and both dull awareness, and together they can stop breathing altogether. I would rather people understood that clearly than learned it in a hospital, or not at all.
What worries me most is the fear of calling for help. I understand that fear. People worry about the police, about their parents finding out, about getting into trouble at work or at university. But I have to say this plainly: no trouble you can get into by calling for help is worse than watching someone die because you were afraid to call. Emergency services exist to save lives, and the people who answer those calls have seen this before. They are not there to punish you for being honest. They are there to help the person who is dying in front of you. Please, if you are ever in that moment, make the call.
I think about the families too, because they are the ones who live with the consequences. A parent who gets a phone call in the middle of the night, a partner who finds someone unresponsive, a friend who has to explain what happened, these are the people who carry the weight afterwards, and it does not go away quickly. An overdose does not only harm the person who took the drug. It harms everyone who loves them, and it leaves questions that may never be answered. That is a heavy price, and it is a price that is paid again and again, in homes all over the world, because people did not know how dangerous the drug could be.
I am also struck by how much of the damage is invisible at first. A person who survives an overdose may look fine a few days later, but their brain, their heart or their kidneys may have been harmed in ways that take months to show. Memory problems, difficulty concentrating, a heart that races too easily, kidneys that do not work as well as they should, these are the quiet consequences that follow people long after the night itself is over. Surviving an overdose is not the same as being unharmed by it. That is a truth I think people need to hear, because it changes how we think about risk. It is not only about whether you live or die. It is about what kind of life you live afterwards.
There is a part of me that wishes ketamine were talked about more honestly, in schools, in families, and in the places where young people actually spend their time. The usual warnings are too vague, and they are too easy to ignore. People need to hear the specific things: that it can stop your breathing, that it can make your heart beat dangerously fast, that it can cause seizures, that it can damage your kidneys, and that it can do all of that in one night. Specific facts are harder to dismiss than general warnings, and they give people something real to think about before they make a choice.
I do not believe that telling people these facts will stop everyone from taking ketamine, and I would not pretend otherwise. People make their own choices, and some of them will take the risk anyway. But I do believe that honest, clear information gives people a better chance of making a safer choice, or of recognising danger when it appears, or of calling for help when it matters. That is not a small thing. If one person reads this and calls for help a few minutes earlier than they otherwise would have, or decides not to mix ketamine with alcohol, or decides not to take it alone, then this article has done its job.
For anyone who has survived an overdose, or who has watched someone else go through one, I would say this: what happened to you matters, and it is worth talking about. There is help available, from doctors, from counsellors, and from support services that work with people who use drugs, and none of them are there to judge you. An overdose can be a turning point, a moment when a person decides that they do not want to go through that again, and that decision deserves support. You do not have to carry it alone, and you do not have to be ashamed of it. What matters is what you do next.
I would also say to parents and to friends: if someone you love is using ketamine, do not wait for a crisis to start the conversation. Talk to them now, calmly and without anger, and let them know that you are worried and that you will help them if they need it. Let them know that if they ever get into trouble, they should call you, and that you would rather get that call at three in the morning than get a different call later. That promise, made in advance, can be the thing that saves a life, because in a crisis, people call the person they trust not to be angry with them.
Finally, I come back to the simplest point of all. An overdose is a medical emergency, and it should be treated as one, every time, without hesitation. There is no safe way to wait it out, no home remedy, and no reason to delay. Call for help, stay with the person, and tell the truth about what happened. Those three things are simple, and they are powerful, and they are the difference between a story that ends in a hospital and a story that ends in a funeral. I hope no one reading this ever needs to use them, but I hope even more that if they do, they will not hesitate.
I think about the moment of decision, the moment when someone at a party or in a flat has to decide whether to call for help or to wait. That moment is harder than it sounds, because the person is often frightened, or unsure, or under the influence themselves, and the person who is ill may be telling them, in the few words they can manage, that they are fine. I want to be clear about this: a person who has taken too much ketamine is not in a position to judge whether they are fine. Their thinking is not clear, their body is not responding normally, and their judgement cannot be trusted. The decision has to be made by the people around them, and the safe decision is always to call. If it turns out to be a false alarm, nothing is lost. If it turns out to be real, those minutes may be the difference between a hospital bed and a funeral.
There is also the question of what happens after the emergency, and I think that matters as much as the emergency itself. A person who has been through an overdose often feels shaken, embarrassed, or frightened, and they may not want to talk about it. They may try to pretend it never happened, and they may go back to using ketamine again, because they do not know what else to do. That is understandable, but it is also dangerous, because a person who has overdosed once is at risk of overdosing again, especially if nothing changes. The time after an overdose is a chance to change something, to talk to a doctor, to get support, or simply to think honestly about what happened. That chance should not be wasted, and the people around the person can help by making it safe to talk about, rather than by making it a subject that is never mentioned.
I have thought a lot about the way we talk about drugs in general, and I think we often get it wrong. We either talk about them as if they are harmless fun, or we talk about them as if anyone who uses them is a bad person, and neither of those conversations helps. The truth is in the middle, and it is more complicated. Ketamine can feel pleasant, and it can also kill you, and both of those things are true at the same time. A person can be sensible in most of their life and still make a dangerous choice about a drug. A person can enjoy a drug and still be harmed by it. If we cannot hold both of those truths at once, we cannot have an honest conversation, and without an honest conversation, people will keep making choices without the facts they need.
The role of alcohol in all of this deserves more attention than it usually gets, because alcohol is so common that people forget it is a drug too. A person who would never mix two illegal drugs together will happily drink alcohol with ketamine, because alcohol feels normal and safe, and because it is legal and available everywhere. But in the body, alcohol and ketamine do not care about what is legal. They both slow breathing, they both dull the brain, and together they can stop breathing altogether. I think that is a message that needs to be said plainly, again and again, because it is one of the most common reasons that a ketamine overdose turns fatal, and it is one of the most preventable.
I also want to say something about the people who sell ketamine, because they are part of this story too. A person who buys ketamine on the street has no idea what they are buying. The powder may be strong or weak, it may be mixed with other substances, and it may contain things that are far more dangerous than ketamine itself. The seller does not test it, does not label it, and does not care what happens to the person who takes it. That is the reality of an unregulated market, and it is why every dose is a gamble. No amount of experience, and no amount of care in measuring, can remove that gamble, because the person taking it does not know what is in the bag. That uncertainty is not a small detail. It is the heart of the danger.
Finally, I want to come back to hope, because this article has been heavy, and it should be, but it should not end without hope. People do recover from ketamine use. People do stop, they do get help, and they do rebuild their lives, and their health improves when they do. The body is remarkably good at healing when it is given the chance, and the brain, the heart and the lungs can all improve over time once the drug is no longer being taken. An overdose can be a terrible event, but it can also be the moment when a person decides to change, and that decision, supported by the people around them and by proper help, can lead to a better life. That is worth believing in, and it is worth working towards, for anyone who has been affected by this drug.
Frequently Asked Questions
Can Ketamine cause a fatal overdose?
Yes, ketamine can cause a fatal overdose. A large amount can slow breathing until it stops, disturb the heartbeat, cause seizures, raise body temperature to a dangerous level, or lead to choking on vomit while the person is unable to move or react. The risk is higher when the strength of the drug is unknown, when it is mixed with alcohol or other drugs, or when the person is alone and nobody notices the warning signs. Any suspected overdose should be treated as a medical emergency, and help should be called at once.
What happens in an overdose of Ketamine?
In an overdose, ketamine disconnects the person from their surroundings and from their own body far more deeply than usual. They may become very confused, unable to speak or move, or lose consciousness altogether. Breathing can become slow, shallow and irregular, the heart can beat very fast or irregularly, body temperature can rise, and seizures can occur. Vomiting is also a serious danger, because the person may not be able to clear their airway. In the worst cases, breathing or the heart stops, and the person dies without urgent medical help.
Why do Ketamine overdoses happen?
Overdoses usually happen because the strength of street ketamine is unknown and can vary greatly from one batch to another, so a person may take far more than they intended. Mixing ketamine with alcohol or other drugs is another major cause, because the combined effects on breathing, the heart and the brain are much stronger than either drug alone. Rising tolerance can also play a part, as a person takes larger amounts over time and the gap between the amount they want and the amount that harms them becomes very small.
Can Ketamine overdose damage the brain?
Yes, a ketamine overdose can damage the brain. Seizures can injure the brain, and slow or stopped breathing can starve it of oxygen, which can kill brain cells within minutes. That oxygen shortage can leave lasting problems with memory, thinking, concentration and movement. The psychological effects can also last, including anxiety, disturbing memories and a feeling that the world is not quite real. Some of this damage may improve over time, but some of it can be permanent, which is why early help matters so much.
What should you do in a Ketamine overdose?
Call your local emergency number immediately and stay with the person until help arrives. Tell the responders, honestly, what was taken, roughly how much, and when, and whether alcohol or any other drug was used as well. Do not leave the person alone, do not give them anything to eat or drink, and do not try to treat them yourself. Getting professional help as fast as possible is the most important thing you can do, because hospital staff can monitor breathing and heartbeat, give oxygen, and keep the person safe while the drug wears off.
What are the signs of a Ketamine overdose?
The signs include severe confusion, inability to speak clearly or to recognise where they are, extreme sleepiness, or drifting in and out of consciousness. Physical signs include slow, shallow or irregular breathing, a very fast, very slow or irregular heartbeat, pale, bluish, clammy or very hot skin, vomiting, and seizures or violent shaking. A person who cannot be woken by shouting or gentle shaking is in a medical emergency. Any of these signs after ketamine use means help should be called at once, without waiting to see if the person improves on their own.
