Ketamine Uses symptoms harmful effects and whether it causes addiction

Ketamine is a medication that has attracted significant attention in the medical field because of its important uses in anesthesia and pain management. In recent years, it has also been associated with certain psychiatric applications under medical supervision. However, its effects on consciousness and perception also make it susceptible to misuse, particularly when used outside medical supervision.So, what is ketamine? What are its main medical uses? What symptoms may occur after taking it? Can it cause serious health complications or lead to addiction?In this Dalili Medical guide, we provide a clear and comprehensive overview of ketamine, starting with what it is and its medical uses, followed by its effects and potential harms, and concluding with the risks of misuse and dependence, as well as available treatment and prevention approaches.

What Happens When Cannabis Is Mixed With Ketamine?

Combining ketamine with cannabis may intensify the psychological and neurological effects of both substances and may lead to greater impairment of consciousness, perception, and motor coordination. The combination may also increase the likelihood of anxiety, hallucinations, confusion, and disturbances in thinking in some individuals.

Psychoactive substances can affect the activity of various neurotransmitter systems in the brain, including dopamine and glutamate. Using cannabis and ketamine together may increase unwanted psychological effects and may be associated with a higher risk of psychotic symptoms, particularly in people who are already vulnerable to such symptoms.

Therefore, combining ketamine and cannabis is not considered a safe practice, and they should not be used together outside appropriate medical supervision.

What Are the Types of Ketamine?

Ketamine may be available in different forms, and each form has specific medical applications depending on the intended use:

Liquid ketamine: It is used medically, particularly through intravenous or intramuscular injection, for anesthesia, certain medical procedures, and pain management. When properly prepared as a pharmaceutical product, it is generally a clear, colorless solution.

Ketamine powder: Ketamine may be distributed illegally in powder form and used recreationally. Its major risk is that the concentration and the substances it may have been mixed with are often unknown, increasing the risk of poisoning and overdose.

Esketamine nasal spray: Esketamine is one of the two molecular forms related to ketamine. It is used medically in specific cases of treatment-resistant depression under strict medical supervision and should not be used without a prescription and appropriate follow-up.

What Is Ketamine Made Of?

The active ingredient in many pharmaceutical ketamine preparations is ketamine hydrochloride.

Ketamine primarily acts on NMDA receptors, which are associated with the neurotransmitter glutamate. By affecting these receptors, ketamine alters the transmission of neural signals in the brain, contributing to its anesthetic, analgesic, and dissociative effects.

What Is Ketamine?

Ketamine is a dissociative anesthetic that has been used medically for decades, particularly for anesthesia and pain management. It has also been studied and used in certain medical settings for depression that does not respond adequately to conventional treatments.

Ketamine should be used under appropriate medical supervision because of its significant effects on consciousness and perception. Misuse may also lead to dependence and serious health complications.

Does Ketamine Cause Loss of Consciousness?

Yes. Ketamine can cause loss of consciousness when administered at appropriate anesthetic doses under medical supervision.

At lower doses, however, complete loss of consciousness may not occur. Instead, a person may experience a state known as dissociative anesthesia, characterized by a feeling of being detached from the body or surrounding environment, along with changes in the perception of time, space, and sensations.

The intensity of these effects varies depending on the dose, route of administration, and the person's overall health.

How Long Does Ketamine Stay in the Body?

The length of time ketamine or its metabolites remain detectable in the body varies depending on several factors, including the dose, frequency of use, liver and kidney function, and the type of test used for detection.

It is not accurate to state that ketamine remains in the body for exactly 15 days in everyone. The duration of its effects is much shorter than the period during which it may be detectable by certain drug tests.

Therefore, it is important to distinguish between the duration of ketamine's effects and the detection window in a specific biological sample or drug test.

How Is Ketamine Used Medically to Treat Treatment-Resistant Depression?

Studies have shown that ketamine, as well as esketamine in approved formulations, may have a relatively rapid effect on depressive symptoms in some patients who have not responded adequately to conventional treatments.

Some patients may experience improvement within hours or days. However, it is not accurate to state that ketamine treats depression at a fixed rate, such as 65% within 24 hours, in all patients. Treatment response varies from one individual to another, and study outcomes differ depending on the type of treatment, dosage, and clinical condition being studied.

Particular attention has been given to ketamine's relatively rapid effects on suicidal thoughts. However, this does not mean that ketamine is a substitute for psychiatric assessment and comprehensive treatment, especially in cases involving an immediate risk of suicide.

Is Ketamine Used to Treat Other Psychiatric Disorders?

Ketamine and esketamine have been studied in several psychiatric conditions, including depression, post-traumatic stress disorder (PTSD), bipolar disorder, and obsessive-compulsive disorder (OCD).

However, the strength of the evidence and approved indications vary between these conditions. Therefore, these uses should not all be considered approved or standard treatments.

How Is the Ketamine Dose Determined?

The physician determines the appropriate dose based on the purpose of treatment, route of administration, the patient's age, overall health, other medications being taken, and response to treatment.

For psychiatric applications specifically, dosing regimens and treatment protocols are carefully defined and require appropriate medical supervision and monitoring.

Patients should not change the dose or repeat treatment on their own. Increasing the dose may cause disturbances in consciousness, elevated blood pressure, breathing or cardiovascular complications, and an increased risk of misuse and dependence.

Does Ketamine Affect Erectile Function?

Ketamine may affect sexual function in some individuals, but there is currently insufficient reliable evidence to state that 60% of ketamine users experience erectile dysfunction.

Sexual effects may vary depending on the dose, frequency of use, physical and psychological health, and the use of other substances at the same time.

Repeated or non-medical ketamine use may contribute to psychological and physical changes. In addition, conditions such as anxiety, depression, sleep disturbances, and the use of other substances may also affect sexual performance. Therefore, erectile dysfunction should not automatically be attributed to ketamine alone.

Ketamine does not simply cause erectile dysfunction by "sedating the nervous system." Its mechanism is more complex and primarily involves modulation of NMDA receptors and the neurotransmitter glutamate.

When Does Ketamine Start Working?

The onset of ketamine's effects varies depending on the route of administration, dose, and the patient's medical condition:

Intravenous injection: The effects generally begin very quickly and may appear within approximately one minute when used for anesthesia.

Intramuscular injection: The effects generally begin within several minutes.

Intranasal esketamine: It is absorbed and begins to exert its effects relatively quickly compared with oral administration, although the onset and intensity of the effects may vary between individuals.

What Are the Medical Uses of Ketamine?

Ketamine is a dissociative anesthetic with legitimate medical applications. However, its use is subject to medical and regulatory controls because of its potential for misuse and the risk of dependence when used improperly.

1. General Anesthesia

Anesthesia is one of the major medical uses of ketamine. It may be used for:

Induction of anesthesia: To help induce a state of anesthesia before certain surgical procedures and medical interventions.

Maintenance of anesthesia: It may be used alone or in combination with other anesthetic medications, depending on the patient's condition and the procedure being performed.

Ketamine has both anesthetic and analgesic properties and relatively preserves certain protective airway reflexes compared with some other anesthetic agents. For this reason, it may be useful in certain rapid and painful procedures, including some procedures involving children, when deemed appropriate by the physician.

2. Pain Management

Ketamine has potent analgesic properties and may therefore be used medically for certain short-duration painful procedures. It may also be included in specialized protocols for the management of acute pain under the supervision of an appropriately trained medical professional.

An important part of its analgesic effect is associated with its action on NMDA receptors, which are linked to the neurotransmitter glutamate. This affects the transmission and processing of pain signals within the nervous system.

3. Certain Severe or Treatment-Resistant Pain Conditions

Ketamine may be used in some specialized medical settings to treat certain types of pain that do not respond adequately to conventional treatments, including some forms of neuropathic pain or complex chronic pain.

This use depends on a physician's assessment of the individual patient. Ketamine is not appropriate for everyone with chronic pain and should not be used without medical supervision.

4. Psychiatric Uses

The use of ketamine in psychiatry is an important area of medical research and treatment, but it is essential to distinguish between ketamine and esketamine.

Esketamine, one of the two stereoisomeric forms of ketamine, is available in some countries as a nasal spray and is used under medical supervision for specific cases of treatment-resistant depression in adults.

Patterns of Ketamine Use Disorder

From a medical perspective, ketamine use disorder is not usually divided into separate "types of addiction." Instead, it is described according to patterns of use, the severity of the disorder, and its impact on a person's life. These patterns can be explained as follows:

1. Experimental or Occasional Use

This refers to intermittent ketamine use without a persistent pattern of loss of control. With continued use or increasing frequency, however, some individuals may develop a more regular pattern of use and more noticeable problems.

2. Repeated Use

Ketamine use becomes more regular and frequent. The person may begin to experience an increasing desire to use ketamine or may tend to increase the dose or frequency of use in an attempt to achieve the same effects.

3. Psychological Dependence

A person may begin to feel that they need ketamine to cope with certain emotions, such as anxiety, stress, or psychological distress, or may use it as a way to escape from problems. Over time, the desire to use the substance may become stronger and stopping may become increasingly difficult.

4. Ketamine Use Disorder

Ketamine use disorder is the broader medical term used to describe a pattern of ketamine use characterized by impaired control over use and continued use despite resulting harm or problems.

Common signs may include:

• Being unable to reduce or stop ketamine use despite wanting to do so.

• Spending significant amounts of time obtaining, using, or recovering from the effects of ketamine.

• Continuing to use ketamine despite physical or psychological problems.

• Neglecting work, education, or social relationships because of ketamine use.

• Experiencing strong or repeated cravings for ketamine.

• Increasing the frequency or amount of use over time.

The severity of a substance use disorder is generally determined by the number of symptoms present and their impact on the individual's life. It may be classified as mild, moderate, or severe.

5. Compulsive or Severe Use

In more advanced cases, obtaining and using ketamine may become a major priority in a person's life, accompanied by significant difficulty controlling use despite negative consequences.

What Causes Ketamine Use Disorder?

Ketamine use disorder may develop as a result of a combination of biological, psychological, and social factors. There is no single cause that leads to addiction in every person.

Important factors associated with an increased risk of ketamine dependence include:

Effects on the brain: Ketamine primarily affects NMDA receptors associated with the neurotransmitter glutamate. It can alter perception and consciousness and produce feelings of detachment from reality. Some people may also experience temporary feelings of relaxation or euphoria.

Repeated use and adaptation to its effects: Repeated use may lead to a degree of tolerance in some individuals, meaning they may use ketamine more frequently or increase the amount used to achieve similar effects. This may increase the risk of developing compulsive use.

Escaping from emotions and psychological stress: Some individuals may use ketamine as a temporary way of coping with anxiety, sadness, stress, or psychological difficulties. This may eventually lead to reliance on ketamine as a coping mechanism.

Psychological reinforcement: When ketamine use is associated with feelings of relief or temporary detachment from problems, a person may become more likely to repeat the behavior, particularly when faced with similar circumstances.

Social and environmental factors: The availability of ketamine, having people in one's social environment who use it, or exposure to social pressure related to substance use may increase the likelihood of misuse.

Individual differences in vulnerability to addiction: Susceptibility to substance use disorders varies between individuals and may be influenced by genetic and psychological factors, previous substance use, as well as the amount, frequency, and method of ketamine use.

How Long Does Ketamine Stay in the Body?

The length of time ketamine remains in the body and can be detected varies from person to person. Factors include the dose, frequency and duration of use, liver and kidney function, the type of biological sample, and the testing method used.

It is important to distinguish between the duration of ketamine's effects and the period during which it can be detected by a drug test. The effects may wear off before the substance or its metabolites are no longer detectable in certain biological samples.

In general:

Blood: The detection window for ketamine itself is relatively short and may be around one day, although this varies depending on the individual's circumstances and the testing method.

Urine: Ketamine or its metabolites may be detectable for several days in some tests. The detection window may be longer with repeated use or higher amounts.

Hair: Ketamine exposure may remain detectable for significantly longer periods than in blood or urine and may potentially be detected for several months, depending on hair length, the testing method, and the location from which the sample is collected.

What Are the Effects of Ketamine on the Body?

Ketamine can cause a range of side effects and health complications. The likelihood of adverse effects increases with high doses, repeated or chronic use, and use outside medical supervision. The severity of symptoms varies depending on the dose, route of administration, and the individual's overall health.

Short-Term Effects

Potential short-term effects include:

• Dizziness, drowsiness, impaired balance, and reduced motor coordination.

• Altered consciousness, impaired perception, and memory disturbances.

• A feeling of detachment from the body or surrounding environment.

• Increased blood pressure and heart rate.

• Nausea and vomiting.

• Anxiety, panic, or confusion, with hallucinations occurring in some individuals.

In cases of high doses or severe poisoning, loss of consciousness or breathing problems may occur. The risk increases when ketamine is combined with other substances that affect the central nervous system.

Long-Term or Repeated-Use Effects

Repeated ketamine use may be associated with more serious health complications, including:

1. Bladder and Urinary Tract

Repeated use may cause urinary problems such as bladder inflammation, bladder pain, frequent urination, urinary urgency, and painful or burning urination. In severe and chronic cases, damage to the bladder, ureters, and kidneys may occur.

2. Liver and Bile Ducts

Repeated ketamine use may be associated with abnormalities involving liver function and the bile ducts. These complications may be more noticeable in people who use ketamine for prolonged periods or in large amounts.

3. Memory and Cognitive Function

Some users, particularly those who use ketamine repeatedly, may experience problems with memory, attention, concentration, and other cognitive functions.

4. Mental Health

Ketamine misuse can contribute to ketamine use disorder and dependence. Repeated cravings and difficulty controlling use may develop, along with psychological and social problems that can interfere with daily life.

5. Gastrointestinal and Nutritional Effects

Some users may experience nausea, vomiting, or loss of appetite, and these symptoms may become more pronounced with higher doses.

Risks of Combining Ketamine With Other Substances

Combining ketamine with alcohol, opioids, benzodiazepines, or other sedatives can be dangerous. Such combinations may increase central nervous system depression, impaired consciousness, loss of consciousness, and serious breathing problems. In severe cases, this can be life-threatening.

Therefore, using ketamine outside medical supervision or combining it with other substances can turn a medication with specific medical applications into a serious health risk.

Factors That Affect How Long Ketamine Remains in the Body

The amount of time ketamine remains in the body is an estimate rather than a fixed period that applies to everyone. It is also important to distinguish between the time the drug remains in the body and the period during which it can be detected by a drug test, as the detection window varies according to the type of sample and testing method.

Several factors can influence how quickly ketamine and its metabolites are processed and eliminated:

1. Age

The metabolism and elimination of medications can vary with age. In general, younger individuals may metabolize certain medications differently from older adults. However, age alone cannot accurately determine how long ketamine will remain detectable, because other health and medication-related factors also play a role.

2. Body Weight and Composition

Body weight and body composition can affect the distribution and metabolism of certain medications. However, the relationship between body weight and ketamine detection time is not simple or consistent. Therefore, increased body weight does not necessarily mean that ketamine will remain in the body longer.

3. Dose and Frequency of Use

The amount of ketamine used and the frequency of use can affect how long it remains detectable. Repeated use or higher doses may result in the drug or its metabolites remaining detectable for longer compared with occasional use.

4. Liver and Kidney Function

The liver plays an important role in ketamine metabolism, while the kidneys contribute to the elimination of some of its metabolites. Liver or kidney disease may therefore affect how the body processes and eliminates the drug and may require specific medical assessment.

5. Metabolic Rate

Drug metabolism varies from one person to another due to genetic, medical, and medication-related factors. As a result, two people who use the same amount of ketamine may eliminate it at different rates.

6. Route of Administration

The absorption and effects of ketamine vary depending on the route of administration, such as intravenous or intramuscular injection or intranasal formulations. This can influence drug concentrations in the body and the way ketamine is metabolized.

7. Drug Interactions and Other Substances

Certain medications and other substances may affect ketamine metabolism or its effects on the nervous system. Combining ketamine with alcohol, sedatives, or opioids can also significantly increase health risks, regardless of how long the drug remains detectable.

How Can Ketamine Be Eliminated Before a Drug Test?

There is no reliable home method that can guarantee faster elimination of ketamine from the body or ensure a negative drug test. Drinking excessive amounts of water, using a sauna, consuming vinegar or salt, using soap, or taking birth-control medications does not remove ketamine from the body. Excessive use of some of these methods may instead cause health problems such as dehydration, electrolyte disturbances, or kidney strain.

The period during which ketamine can be detected depends on several factors, including the dose, frequency of use, liver and kidney function, type of sample, and sensitivity of the test. Therefore, a negative test result cannot be guaranteed within a specific period.

If a person uses ketamine repeatedly or has difficulty stopping, the safest approach is to stop using it and seek a specialized medical assessment for ketamine use disorder rather than attempting to eliminate it rapidly before testing.

Treatment of Ketamine Use Disorder

1. Comprehensive Medical Assessment

Treatment begins with an assessment of the person's physical and psychological health. This includes evaluating the pattern of ketamine use, dosage and frequency, other substances being used, and possible health complications, particularly urinary and liver problems.

The purpose of this assessment is to develop an individualized treatment plan based on the person's needs.

2. Stopping Ketamine Use and Medical Monitoring

Stopping ketamine should be managed according to the person's pattern of use, overall health, and clinical needs. Some people may require intensive monitoring or treatment in a specialized facility, while others may be managed through outpatient care.

After stopping, symptoms such as sleep disturbances, anxiety, mood changes, and strong cravings may occur. These symptoms can be monitored and treated as needed.

There is no fixed or guaranteed duration for the detoxification phase. Detoxification alone does not treat ketamine use disorder; it is only one part of a broader treatment plan.

3. Psychological Treatment

A. Cognitive Behavioral Therapy (CBT)

CBT can help patients identify thoughts, situations, and behaviors that trigger ketamine use. It can also help develop healthier ways of coping with stress, difficult emotions, and cravings, as well as strategies for preventing relapse.

B. Individual Therapy

Individual sessions with a mental-health professional can help the patient understand factors associated with substance use and address psychological or behavioral problems that may accompany it.

C. Group Therapy

Group therapy provides a supportive environment in which people can share experiences and challenges. It may also help strengthen social support and motivation for recovery.

4. Medication Treatment

There is currently no medication specifically approved for the treatment of ketamine use disorder. Physicians may prescribe medications to manage associated conditions or symptoms, such as anxiety, depression, or sleep disturbances, depending on the individual assessment.

Medications should not be taken to “clean” ketamine from the body or treat withdrawal without medical supervision.

5. Social Rehabilitation and Relapse Prevention

Rehabilitation can help restore a regular lifestyle, improve relationships and coping skills, and identify situations, people, or circumstances that may trigger a return to ketamine use.

6. Family Therapy

When appropriate, family members may be involved in treatment to provide support, understand the nature of ketamine use disorder, and help recognize early signs of relapse.

7. Aftercare

Treatment does not necessarily end once ketamine use stops. Ongoing follow-up can help maintain recovery and reduce the risk of relapse. Follow-up may include regular psychological therapy, support groups, and medical reviews according to the person's needs.

Medication Treatment for Ketamine Addiction

It is important to note that there is currently no medication specifically approved and proven to treat ketamine use disorder. The available scientific evidence regarding medications remains very limited. Many studies consist of case reports or small studies, so none of the medications discussed below should be considered a standard treatment for ketamine addiction or used without specialist medical supervision.

1. Medications Used During Intoxication or Withdrawal Symptoms

Doctors may use certain medications to manage specific symptoms that occur during ketamine intoxication or after stopping ketamine, depending on the severity of the condition and under medical monitoring.

Benzodiazepines, such as diazepam, have been used in some cases to help manage:

• Severe anxiety and tension.

• Agitation and restlessness.

• Insomnia.

• Some acute symptoms associated with intoxication or cessation.

However, evidence supporting benzodiazepines specifically for ketamine withdrawal is limited and is based largely on case reports and small studies rather than strong clinical trials. Benzodiazepines themselves can cause dependence and misuse, so they should only be used under medical supervision and according to a carefully defined treatment plan.

Haloperidol may be used in a hospital setting when severe agitation or acute psychotic symptoms occur during intoxication, depending on the physician's assessment. There is insufficient evidence to consider it a direct treatment for ketamine use disorder.

2. Medications Studied for Cravings and Relapse Prevention

Some medications have been reported in a limited number of cases as possible treatments for reducing ketamine cravings or preventing relapse. However, current evidence is insufficient to establish them as standard treatments.

Naltrexone: It has been used in a very small number of cases, with reports of reduced ketamine cravings in some patients and prolonged abstinence. However, these limited findings do not establish its effectiveness as a treatment for ketamine addiction. Medical assessment is particularly important for people who use opioid medications.

Lamotrigine: Limited reports have suggested a possible reduction in ketamine cravings and use in some patients, but there is insufficient evidence to recommend it as a routine treatment. It must be started and monitored carefully because of the possibility of rare but serious skin reactions.

Paliperidone palmitate with bupropion: This combination has been reported in a limited number of cases, with improvement in some symptoms and abstinence from ketamine. However, the number of reported cases is extremely small, and there is insufficient evidence to consider it an established treatment for ketamine use disorder.

3. What About Antidepressants?

If a person has depression, an anxiety disorder, or another psychiatric condition alongside ketamine use disorder, a physician may prescribe an appropriate medication for the coexisting condition.

The goal is to treat the underlying psychiatric disorder that may contribute to continued substance use rather than to consider antidepressants a direct treatment for ketamine addiction.

4. Can Ketamine or Esketamine Be Used to Treat Ketamine Addiction?

Ketamine or esketamine should not be used to treat ketamine use disorder without specialist medical supervision. Ketamine has misuse potential and may lead to problematic use or dependence, and it is not an established treatment for ketamine use disorder.

Psychological treatment and specialized follow-up are important components of recovery, along with treatment of any coexisting psychological or physical conditions and the use of medications when clinically appropriate.

Contraindications to Ketamine

The contraindications and level of caution required with ketamine vary according to the purpose of treatment, dose, route of administration, and the patient's medical condition. Some conditions may represent clear contraindications, while others require careful medical assessment before treatment.

Important conditions requiring avoidance or careful evaluation include:

• Known allergy to ketamine or any ingredient in the formulation.

• Conditions in which an increase in blood pressure could be dangerous, since ketamine can increase blood pressure and heart rate.

• Certain severe cardiovascular conditions, particularly when increased blood pressure or heart rate would pose a significant risk.

• Certain conditions involving increased intraocular pressure, such as some forms of glaucoma, depending on the patient's condition and the intended use.

• Certain cases of increased intracranial pressure, which require specialist assessment because the decision depends on the patient's condition, anesthetic technique, and ventilation.

• Severe liver disease, particularly when repeated ketamine use is being considered, because liver function can affect drug metabolism and elimination.

• Certain psychiatric conditions or psychiatric histories, because ketamine can temporarily alter perception and may cause hallucinations.

Pregnancy and Breastfeeding

During pregnancy and breastfeeding, ketamine should only be used after a physician has carefully evaluated the situation and determined that the expected benefits outweigh potential risks. The decision depends on the reason for treatment, stage of pregnancy, and the mother's health.

Medications and Substances Requiring Caution

Ketamine requires particular caution when combined with:

• Alcohol.

• Opioids.

• Benzodiazepines.

• Sedatives and other central nervous system depressants.

Combining these substances can increase sedation and impaired consciousness and may, in some circumstances, increase the risk of respiratory depression or loss of consciousness.

How Long Do Ketamine Withdrawal Symptoms Last?

The duration and severity of ketamine withdrawal symptoms vary from person to person. They depend on the duration of use, dosage and frequency, physical and psychological health, and whether other substances are being used at the same time.

Ketamine withdrawal is not characterized by a precisely defined timeline in the same way as withdrawal from some other substances. Therefore, there is no single schedule that applies to everyone.

1. The First Few Days After Stopping

Psychological and behavioral symptoms may appear during the early period after stopping, including:

• Anxiety and tension.

• Sleep disturbances or insomnia.

• Low mood or depression.

• Fatigue and exhaustion.

• Difficulty concentrating.

• Strong cravings to use ketamine again.

Some people may also experience physical symptoms such as sweating or nausea, although these vary between individuals.

2. The Following Weeks

Symptoms may gradually improve, but some people may continue to experience anxiety, sleep disturbances, mood fluctuations, or cravings for a longer period.

The speed of recovery varies considerably. The persistence of some symptoms for several weeks does not necessarily indicate a serious complication, particularly in people who used ketamine frequently or for a long period.

3. Prolonged Psychological Symptoms

Some psychological symptoms, such as mood disturbances, anxiety, or cravings, may persist for longer in some individuals. Their persistence may also be associated with a pre-existing psychiatric disorder or psychological problems that developed or worsened during ketamine use.

Persistent severe depression, suicidal thoughts, severe confusion, or hallucinations require urgent medical assessment.