Ketador

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Medically reviewed

Laura Arias

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Ketador

Property Description
Active ingredient Ketamine (typically as hydrochloride salt)
Form Sterile Solution for Injection/Infusion
Pharmacological class Dissociative Anesthetic, NMDA Receptor Antagonist
General purpose Anesthesia, Analgesia
Origin Synthetic Compound (Arylcyclohexylamine derivative)

Ketador is a specific trade designation for the medication containing the active compound Ketamine, a synthetic arylcyclohexylamine derivative originally synthesized in the 1960s. Ketamine is fundamentally classified as a non-barbiturate general anesthetic and a potent analgesic. Its action in the body is primarily defined by its role as an N-methyl-D-aspartate (NMDA) receptor antagonist, which blocks certain neural signals in the brain and spinal cord.

What Type of Medicine Is Ketador?

Ketador is classified as a dissociative anesthetic due to its unique ability to induce a state of functional separation between the mind and physical sensation. As a critical element in global healthcare, Ketamine has been listed on the World Health Organization (WHO) Model List of Essential Medicines since 1985. The drug is a synthetic compound, which distinguishes it from naturally derived agents. This classification is clinically recognized for its ability to maintain stable cardiovascular function, which is often crucial when administering anesthesia to trauma patients. The compound is characterized as a rapid-acting, effective anesthetic with a favorable cardiorespiratory profile in emergency settings. This indicates that the medicine is dependable for providing quick and stable anesthesia when a rapid response is required.

Composition and Pharmaceutical Forms

The product contains a single active ingredient, Ketamine, typically prepared as the highly water-soluble hydrochloride salt for clinical use. The most common form encountered is a clear, sterile aqueous solution for injection or infusion, suitable for rapid systemic delivery through routes such as intravenous (IV) or intramuscular (IM) administration. This primary injectable form is a key feature, supporting its use in procedural settings where immediate onset of effect is mandatory. However, contemporary use has expanded to include alternative pharmaceutical forms, such as nasal sprays and oral preparations.

General Purpose and Unique Effect

The general purpose of Ketador is to achieve rapid and effective general anesthesia or to provide intense analgesia (pain relief) for medical procedures, particularly in situations where maintaining essential reflexes is desirable. It achieves this by producing a unique dissociative effect that creates a controlled detachment and pain blockade. Beyond its primary function as an anesthetic, its potent action as an NMDA receptor antagonist is utilized to rapidly modulate brain activity in contexts where an immediate neurological change is sought. The medication is utilized for powerful pain relief in cases that may be resistant to conventional opioids. This supports the drug's application in managing pain that other standard medications struggle to alleviate.

Regulatory References

  1. Ketamine on WHO Essential Medicines List

What side effects are possible with Ketador?

The safety profile of Ketador, containing the active compound Ketamine, is based on official regulatory documents that classify potential effects by frequency and affected organ system.

Adverse Reactions by System and Frequency

Classification Examples of Officially Documented Effects
Frequently Observed Transient increase in blood pressure (hypertension) and heart rate (tachycardia). Hemodynamic changes often return to pre-anesthetic values within 15 minutes.
Common Emergence reactions occur in approximately 12% of patients, manifesting during the recovery period. These reactions include vivid imagery, confusion, excitement, or hallucinations.
System-Organ Classes Adverse reactions involve the Psychiatric/Nervous System (e.g., somnolence, delirium), Vascular/Cardiac (e.g., arrhythmia, hypotension/hypertension), Respiratory (e.g., respiratory depression, laryngospasms), Gastrointestinal (e.g., nausea, vomiting), and Eye Disorders (e.g., nystagmus).

Serious Adverse Reactions and Safety Constraints

Serious adverse reactions officially documented include severe respiratory depression or apnea, particularly with rapid intravenous administration or overdosage, and drug-induced liver injury.

Safety labels note that severe lower urinary tract symptoms, including haemorrhagic cystitis and acute kidney injury, have been reported, primarily associated with long-term use or abuse. An increase in cerebrospinal fluid pressure has also been reported following administration. The drug is contraindicated in patients for whom a significant elevation of blood pressure or known hypersensitivity to the drug would constitute a serious hazard.

Population-specific safety statements include a note that a prolonged duration of action may occur in patients with hepatic impairment. The incidence of psychological emergence manifestations is reported as least in older adults (over 65 years of age).

Overdose and Emergency Response

Overdose and when to seek help: Official Regulatory Information for Ketador

Documented Overdose Presentations and Scope

The primary, life-threatening manifestation of Ketador overdosage or overly rapid administration documented in regulatory sources is severe respiratory depression or apnea (cessation of breathing). The label also notes that unintentional administration of doses up to ten times the usual requirement has resulted in a prolonged but complete recovery, demonstrating a wide margin of safety.

Physiological systems affected may include the respiratory system (depression, apnea) and the central nervous system (prolonged anesthetic effect, profound sedation).

Emergency Actions and Seeking Urgent Help

In the event of respiratory depression or apnea, immediate medical help is required. Official documents state that supportive ventilation must be employed, with mechanical support of respiration being preferred over the use of analeptics (respiratory stimulants). Treatment is strictly symptomatic and supportive, as no specific pharmacologic antidote is available to reverse the drug's effects. Emergency resuscitative equipment must be readily available during use, and continuous monitoring of vital signs is required.

Population-Specific Overdose Notes

In patients with liver impairment (e.g., cirrhosis), the duration of Ketador's action may be prolonged due to reduced hepatic clearance. Additionally, regulatory warnings note that animal studies have linked prolonged exposure to NMDA-blocking agents, like Ketador, to potential neuronal apoptosis in the developing brain, a population-specific toxicity risk.

Therapeutic Uses of Ketador

What Ketador Treats: Main Uses and Benefits

Ketador, containing the active compound Ketamine, is commonly used to provide symptomatic relief across several critical clinical domains. It is relevant for easing symptoms associated with sudden onset and utilizes its unique physiological effects. The medicine is commonly used for managing symptoms during general anesthesia and procedural settings, including for patients with conditions involving temporary physiological imbalance. The medication is utilized for diagnostic and surgical procedures.

The medicine is applied across domains where additional symptomatic support is needed, which includes general anesthesia, procedural sedation, acute pain management, and specialized chronic symptom relief. It is applied in clinical settings that involve acute or unstable symptom patterns where additional support for symptom management is needed.

Quick Fact: Relief for Acute Symptom Management

Quick Fact: Ketador is applied when supportive symptom management is appropriate, as it may assist in supporting cardiovascular function and respiratory effort in situations where patients experience temporary physiological imbalance.

“Applied across domains where additional symptomatic support is needed, this medicine helps address symptom clusters that may become intense or disruptive.”

Ketador provides support that helps ease the overall symptom burden for severe, sudden-onset physical pain (e.g., trauma, fractures) and is relevant in conditions where symptoms may intensify temporarily, such as certain chronic neuropathic pain syndromes or severe, treatment-resistant depressive symptoms. This medication contributes to easing the overall symptom load during periods of heightened symptoms.

Eligibility and Restrictions for Use

Ketador (Ketamine) eligibility is strictly defined by regulatory bodies based on population status and pre-existing health conditions. The medicine is classified for use in adult and pediatric patients for anesthesia, but its use is subject to specific exclusions and restrictions documented in official labeling.

Contraindicated Populations

Use is absolutely prohibited for patients with known hypersensitivity to the medicine. It is also contraindicated for individuals in whom a significant elevation in blood pressure or heart rate would pose a serious hazard. This includes patients with uncontrolled hypertension, severe coronary or myocardial disease, recent heart attack, and eclampsia or pre-eclampsia.

Restricted and Cautionary Use

The medicine is restricted or requires special caution for several populations. Patients with pre-existing elevated intracranial pressure (ICP) or a history of severe psychiatric illness (such as acute psychosis or schizophrenia) must be approached with extreme caution. Use is not recommended for women who are pregnant or breastfeeding as safety has not been established. While approved for use, older adults are generally subject to cautious administration due to potential increased sensitivity. Furthermore, patients with severe hepatic impairment are restricted due to the risk of prolonged drug action.

What should I know about interactions with other medicines?

Interactions with other medicines and products — Official Regulatory Information

The interaction profile of Ketador is defined by its two main classification types: pharmacokinetic alteration via enzyme metabolism and pharmacodynamic potentiation.

Pharmacokinetic Exposure Modification

The primary metabolic clearance of Ketamine is mediated by the CYP3 A4 and CYP2 B6 isoenzymes. This enzyme-based metabolism results in two key documented interaction patterns: Strong CYP3 A4 Inhibitors are expected to increase the systemic exposure of Ketamine, which may lead to higher plasma concentrations. Conversely, Strong CYP3 A4 Inducers are expected to reduce systemic exposure.

Pharmacodynamic and Chemical Interactions

Co-administration with CNS Depressants, including Opioids, Barbiturates, and Alcohol (Ethanol), can result in additive CNS depression and a prolonged recovery time. Thyroid Hormones and Sympathomimetics increase the risk of hypertension and tachycardia when used concurrently. The medicine may also potentiate the neuromuscular blocking effects of certain non-depolarizing muscle relaxants.

Procedural and Population-Specific Restrictions

A critical timing-based restriction applies to the injectable solution: Ketamine is chemically incompatible with Barbiturates and Diazepam and must not be mixed in the same syringe or infusion fluid. For specific populations, caution is noted in cases of Hepatic Impairment, where reduced clearance is documented as expected to increase plasma concentrations.

Mechanism of Action

Targeting Key Receptor Systems

Ketador’s primary mechanism involves acting as a selective noncompetitive antagonist at N-methyl-D-aspartate (NMDA) receptors located within the central nervous system. This molecular interaction primarily occurs within the ion channel pore of the NMDA receptor, thereby blocking the flow of ions. This action serves to dampen the activity of the primary excitatory neurotransmitter systems at the cellular level.

Initiating Molecular Cascades

The targeted receptor block subsequently initiates a complex signal transduction cascade in affected neurons. The inhibition of NMDA receptors leads to an increase in the release of glutamate, which then indirectly stimulates other receptor subtypes, such as AMPA receptors. This shift in signaling dynamics activates important intracellular pathways, including those linked to neuroplasticity and the regulation of synaptic connectivity, such as BDNF-TrkB and mTOR signaling.

Modulating Dysregulated Activity

This sequence of molecular and intracellular events supports the regulation of overactive or dysregulated physiological responses characterized by heightened pathway activation. By influencing these core signaling mechanisms, Ketador contributes to a more balanced and regulated state in the affected neural networks, which underlies the drug’s profile of physiological adjustments.

Dosage and Administration Information

How to Use Ketador

Ketador, containing the active compound ketamine, is administered strictly according to clinical protocols. Its use is limited to controlled clinical environments and must be performed by or under the direction of clinicians experienced in the use of general anesthetics.


Administration and Dosing Principles

Ketador is administered via the parenteral route, primarily as a sterile solution for intravenous (IV) injection or infusion, or intramuscular (IM) injection. The administration is acute and procedure-based, and is not intended for daily or long-term self-administration.

  • IV Induction Dose: The initial dose for anesthesia induction typically ranges from 1 mg/kg to 4.5 mg/kg of body weight, administered slowly over 60 seconds.
  • IM Induction Dose: The intramuscular range is generally higher, spanning 6.5 mg/kg to 13 mg/kg.
  • Maintenance Pattern: Anesthesia is maintained by repeating incremental doses (one-half to the full induction dose) as required for the procedure’s duration, or by a continuous IV infusion (e.g., 0.1 to 0.5 mg/minute). An initial IV dose provides surgical anesthesia for approximately 5 to 10 minutes.

Preparation and Specific Use Contexts

For intravenous administration, the highly concentrated 100 mg/mL solution must be diluted using standard fluids such as 0.9% Sodium Chloride or 5% Dextrose in Water immediately prior to use. Premedication with an anticholinergic agent is often recommended to manage procedural effects. In certain patient populations, such as older adults or those with hepatic impairment, a cautious dose selection starting at the lower end of the dosage range is recommended to account for potential differences in drug processing.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Ketador

Ketador, containing the active ingredient Ketamine, has been widely studied for many years, contributing to the available body of research for its primary use in anesthesia and a developing landscape of research for its application in other areas, such as pain and certain mental health conditions. Research primarily utilizes Randomized Controlled Trials (RCTs) and systematic reviews, which help gather and summarize findings across different clinical settings.


Evidence for Use in General Anesthesia and Procedural Sedation

Studies in this area, including large-scale controlled trials and regulatory data, research explored Ketador's primary function as an anesthetic agent. Research examined its application in research exploring how symptoms change over time during surgical or diagnostic procedures that do not require deep muscle relaxation.

Studies monitored outcomes related to systemic or functional imbalance, such as the stability of a patient's heart rate and blood pressure, and observed the preservation of protective reflexes in the airway. Findings describe patterns observed in the studies across different populations. Studies data show patterns related to procedural use. The established research base covers both adults and pediatric patients (including children from about three months of age).


Evidence for Acute Pain Management

Research, often in the form of short-term RCTs and meta-analyses, was studied for its use in contexts involving severe, sudden-onset physical discomfort, such as pain following injury or surgery. These studies focused on outcomes related to physical discomfort, measured using pain scales.

Studies explored the measurement of subsequent opioid pain medication usage in cohorts receiving Ketador. Findings indicate that when studies were conducted during periods of increased symptom activity, changes in measured pain levels were noted over short observation intervals following a dose. Follow-up durations were limited in many studies, meaning there is limited information for long-term outcomes regarding the duration of the effect.


What is Still Uncertain About Ketador

Data are still emerging regarding the optimal use of Ketador in refractory chronic pain, where certainty remains low due to variable evidence quality and modest sample sizes. For treatment-resistant depression, although research highlights changes measured during the study period, long-term effects are not fully established, and the optimal frequency for repeated administration to potentially sustain effects is still under investigation. Across all non-anesthetic uses, evidence is limited for long-term outcomes or the consequences of multiple exposures over many years.

Key Studies & References

  1. World Health Organization Model List of Essential Medicines

Frequently Asked Questions (FAQ)

Common questions about Ketador (FAQ)


Q: What is the main difference between Ketador and other similar pain relief medicines?

Official information describes Ketador as a dissociative anesthetic that works primarily by blocking the NMDA receptor system in the brain. This mechanism is distinct from most common pain relief medicines, which often target different pathways like inflammation or opioid receptors.


Q: Is Ketador considered a strong painkiller?

According to regulatory documents, Ketador is described as producing profound analgesia and is indicated for use when intense analgesia (pain relief) is required. This designation describes its intended role as a strong pain-relieving medicine.


Q: How quickly does Ketador usually start to work?

The official product information states that the onset of effect is very rapid. When given intravenously (IV), surgical anesthesia typically begins within 30 seconds. If administered intramuscularly (IM), the onset is usually observed within 3 to 4 minutes.


Q: Are there any vitamins or supplements that interact with Ketador?

Yes, regulatory information notes that certain supplements may affect how the body processes Ketador. For example, some herbal supplements may interfere with the drug’s metabolism. Information about all vitamins and supplements should be shared with the medical team.


Q: Does Ketador carry a risk of dependence or addiction?

Yes. Ketador (Ketamine) is classified as a Schedule III controlled substance by regulatory bodies due to its acknowledged potential for misuse. This classification indicates a risk for developing physical and psychological dependence.


Q: Is Ketador safe for older adults (seniors)?

Official guidelines state that use in older adults requires cautious dose selection and administration. Regulatory data also suggest that the incidence of psychological side effects is generally least in older adults compared to younger patients.


Q: Can children or teenagers use Ketador?

According to the FDA and other regulatory agencies, Ketador is approved as an anesthetic agent for use in both adult and pediatric patients. Its use in children is established for certain procedures and medical contexts.


Q: Are there any special considerations for people with kidney issues when using Ketador?

Regulatory documents note a disease interaction with pre-existing renal dysfunction. Furthermore, serious adverse reactions associated with long-term use include acute kidney injury and severe lower urinary tract symptoms.


Q: Why is Ketador not available over the counter in some places?

Ketador is not sold over the counter because it is classified as a Schedule III controlled substance. This regulatory status strictly limits its availability and requires that it be administered only in authorized clinical settings.


Q: Is Ketador the same as generic versions of the drug?

Ketador is a specific trade name for the active compound Ketamine Hydrochloride. Regulatory information confirms that Ketamine is a compound that is available as a generic medication under its non-branded name.


Q: Are there any known interactions between Ketador and antidepressants?

Yes, certain interactions are noted in the official prescribing information. Specifically, combining Ketador with Monoamine Oxidase Inhibitors (MAOIs) can significantly increase blood pressure. Common oral antidepressants are generally considered compatible, but their use alongside Ketador requires clinical supervision.


Q: How does Ketador differ in use for acute pain versus chronic pain?

Official documents and research summaries indicate that Ketador is established for use in acute pain management, such as pain following a procedure. However, for chronic pain, the evidence is still emerging, and certainty regarding optimal long-term use remains low.


Q: How do I know if the side effect I am feeling is serious?

The official label lists serious reactions such as severe respiratory depression, drug-induced liver injury, and severe lower urinary tract symptoms. If you experience signs of any concerning change, contact your medical provider immediately.


Q: Does taking Ketador for a long time reduce its effectiveness?

Regulatory information notes that if the medicine is used regularly, the body may develop tolerance to its effects. This means that over time, increasing amounts may be required to achieve the desired effect.


Q: Can Ketador cause insomnia?

Yes, insomnia (difficulty sleeping) is listed in official documentation as a potential psychological side effect. This is particularly noted during the recovery period following administration.


Q: What foods or drinks should be avoided while using Ketador?

The only specific drink interaction mentioned in official product information is Alcohol (Ethanol), which should be avoided due to the risk of additive CNS depression. No specific foods are generally listed to avoid, as the drug is given via injection.


Q: Why do some people report feeling restless after taking Ketador?

Feeling restless may be part of what the official label terms "emergence reactions" that occur during the recovery period. These common reactions can include vivid imagery, excitement, confusion, or irrational behavior.


Q: Is Ketador considered a NSAID (Nonsteroidal Anti-Inflammatory Drug)?

No. Official classification documents list Ketador as a Dissociative Anesthetic and an NMDA receptor antagonist. This mechanism of action is completely different from the anti-inflammatory properties of NSAIDs.


Q: Does Ketador show up on a drug test?

Yes. As a controlled substance with a known potential for misuse, Ketador (Ketamine) can be detected in drug tests. Specific blood concentration limits are set by legal regulations in some jurisdictions.


Q: How soon after stopping Ketador can I consume alcohol?

The official caution period advises patients to avoid engaging in hazardous activities for 24 hours or more after receiving the medicine. Since alcohol is a depressant, consumption should be avoided during this post-procedure time, as determined by the clinician.


Q: Is it mandatory to have a prescription for Ketador everywhere?

Yes. As a controlled substance used in authorized medical settings, its legal dispensing and administration requires medical authorization (prescription) globally.


Q: Are there different strengths of Ketador available?

Yes. Injectable forms of the medicine are available in various concentrations, such as 10 mg/mL and 50 mg/mL solutions. The concentration used is determined based on the patient's needs and the medical procedure being performed.


Q: What does the safety rating or classification of Ketador mean?

The classification means Ketador is a Schedule III controlled substance in the US (similar classification applies internationally). This indicates it has an accepted medical use but carries a low to moderate risk of physical and psychological dependence.


Q: Are there any known issues with Ketador and driving or operating machinery?

Official caution advises that driving an automobile, operating hazardous machinery, or engaging in hazardous activities is to be avoided for 24 hours or more after the procedure.


Q: Is Ketador commonly prescribed by dentists?

Yes. Regulatory documents in some areas refer to the drug being provided for medical or dental purposes. This suggests that its use is established in professional dentistry settings.


Q: Can Ketador be taken with cold and flu medicine?

Cold and flu medicines often contain ingredients that are CNS depressants or stimulants. Regulatory information suggests combining CNS depressants can increase breathing problems, while stimulants can lead to high blood pressure, requiring caution.

How should Ketador be stored and disposed of?

How to Store and Dispose of Ketador

The storage of Ketador (Ketamine Injection) must strictly follow regulatory mandates to ensure product stability and safety. The solution must be stored at Controlled Room Temperature, which is 20 C to 25 C (68 F to 77 F), and must not be frozen. Vials should be kept in the original outer carton to protect the product from light.

This medication is for single use only. Any unused portion must be discarded immediately after the procedure, as directed by official stability rules. As a controlled substance, Ketador must be stored locked up and kept out of the reach of children. Unused or expired medication must be disposed of in accordance with local pharmaceutical waste requirements, with specific instructions to avoid environmental release.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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