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Generic Name: ketamine (KET a meen)
Brand Name: Ketalar
Physician reviewed Ketalar patient information - includes Ketalar description, dosage and directions.
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Drug Information:
Ketalar is used to put you to sleep for surgery and to prevent pain and discomfort during certain medical tests or procedures. Ketalar may also be used for purposes not listed in this medication guide. You should not be treated with Ketalar if you have untreated or uncontrolled hypertension (high blood pressure). Tell your caregivers at once if you have serious side effects within 24 hours after you receive Ketalar, including severe confusion, hallucinations, unusual thoughts, or extreme fear. You should not receive Ketalar if you are allergic to it, or if you have untreated or uncontrolled hypertension (high blood pressure). Learn more

Ketalar Side Effects

Ketalar Side Effects

Note: This document contains side effect information about ketamine. Some of the dosage forms listed on this page may not apply to the brand name Ketalar.

For the Consumer

Applies to ketamine: injection solution

Along with its needed effects, ketamine (the active ingredient contained in Ketalar) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor or nurse immediately if any of the following side effects occur while taking ketamine:

Incidence not known

  • Bloody or cloudy urine
  • bluish lips or skin
  • blurred vision
  • chest pain or discomfort
  • confusion
  • confusion as to time, place, or person
  • convulsions
  • cough
  • difficult or troubled breathing
  • difficult, burning, or painful urination
  • difficulty with swallowing
  • dizziness
  • dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
  • fainting
  • fast, slow, or irregular heartbeat
  • frequent urge to urinate
  • hives
  • holding false beliefs that cannot be changed by fact
  • irregular, fast or slow, or shallow breathing
  • itching
  • not breathing
  • pale or blue lips, fingernails, or skin
  • puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
  • seeing, hearing, or feeling things that are not there
  • shortness of breath
  • skin rash
  • sweating
  • tightness in the chest
  • unusual excitement, nervousness, or restlessness
  • unusual tiredness or weakness

Some side effects of ketamine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Incidence not known

  • Double vision
  • dream-like state
  • flushing or redness of the skin
  • loss of appetite
  • nausea
  • pain at the injection site
  • seeing double
  • uncontrolled eye movements
  • unusually warm skin
  • vomiting
  • weight loss

For Healthcare Professionals

Applies to ketamine: compounding powder, injectable solution, intravenous solution


Common (1% to 10%): Blood pressure increased, heart rate increased, increased pulse rate

Uncommon (0.1% to 1%): Bradycardia, arrhythmia, hypotension

Frequency not reported: Arrhythmia


Common (1% to 10%): Respiratory rate increased

Uncommon (0.1% to 1%): Respiratory depression, laryngospasm

Rare (less than 0.1%): Obstructive airway disorder, apnea


Common (1% to 10%): Nystagmus, diplopia

Frequency not reported: Intraocular pressure increased


Common (1% to 10%): Nausea, vomiting, anorexia

Rare (less than 0.1%): Salivary hypersecretion


Common (1% to 10%): Hypertonia, tonic clonic movements


Uncommon (0.1% to 1%): Injection site pain, injection site rash


Common (1% to 10%): Erythema, morbilliform rash


Common (1% to 10%): Hallucination, abnormal dreams, nightmare, confusion, agitation, abnormal behavior

Uncommon (0.1% to 1%): Anxiety

Rare (less than 0.1%): Delirium, flashback, dysphoria, insomnia, disorientation

Frequency not reported: Psychotic episodes


Rare (less than 0.1%): Cystitis, hemorrhagic cystitis


Frequency not reported: Liver function test abnormal


Common (1% to 10%): Anaphylactic reaction

Editorial References and Review

Medically reviewed by BestRx Medical Team Last updated on 1/1/2020.

Source: Drugs.com Ketalar