Interactions between Chloral hydrate and Ketamine
1 drug interaction and 22 additional warnings found for the following 2 drugs:
- chloral hydrate
- ketamine
Drug interactions
Major drug interactions
Major:
chloral hydrate ketamine
Applies to: chloral hydrate and ketamine
Monitor closely
Coadministration of ketamine with other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. In addition, opioid analgesics, barbiturates, and benzodiazepines may prolong the time to complete recovery from anesthesia.
Management
During concomitant use of ketamine with other CNS depressants, including alcohol, close monitoring of neurologic status and respiratory parameters, including respiratory rate and pulse oximetry, is recommended. Dosage adjustments should be considered according to the patient's clinical situation. Ambulatory patients should be counseled to avoid hazardous activities requiring mental alertness and motor coordination until they know how these agents affect them, and to notify their physician if they experience excessive or prolonged CNS effects that interfere with their normal activities.
References (3)
- Cerner Multum, Inc. "UK Summary of Product Characteristics."
- Cerner Multum, Inc. "Australian Product Information."
- (2009) "Product Information. Ketalar (ketamine)." JHP Pharmaceuticals
Food/lifestyle interactions
Major food/lifestyle interactions
Major:
ketamine Alcohol (Ethanol)
Applies to: ketamine
Monitor closely
Coadministration of ketamine with other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. In addition, opioid analgesics, barbiturates, and benzodiazepines may prolong the time to complete recovery from anesthesia.
Management
During concomitant use of ketamine with other CNS depressants, including alcohol, close monitoring of neurologic status and respiratory parameters, including respiratory rate and pulse oximetry, is recommended. Dosage adjustments should be considered according to the patient's clinical situation. Ambulatory patients should be counseled to avoid hazardous activities requiring mental alertness and motor coordination until they know how these agents affect them, and to notify their physician if they experience excessive or prolonged CNS effects that interfere with their normal activities.
References (3)
- Cerner Multum, Inc. "UK Summary of Product Characteristics."
- Cerner Multum, Inc. "Australian Product Information."
- (2009) "Product Information. Ketalar (ketamine)." JHP Pharmaceuticals
Moderate food/lifestyle interactions
Moderate:
chloral hydrate Food/Lifestyle
Applies to: chloral hydrate
Generally avoid
Alcohol may potentiate some of the pharmacologic effects of CNS-active agents. Use in combination may result in additive central nervous system depression and/or impairment of judgment, thinking, and psychomotor skills.
Management
Patients receiving CNS-active agents should be warned of this interaction and advised to avoid or limit consumption of alcohol. Ambulatory patients should be counseled to avoid hazardous activities requiring complete mental alertness and motor coordination until they know how these agents affect them, and to notify their physician if they experience excessive or prolonged CNS effects that interfere with their normal activities.
References (4)
- Warrington SJ, Ankier SI, Turner P (1986) "Evaluation of possible interactions between ethanol and trazodone or amitriptyline." Neuropsychobiology, 15, p. 31-7
- Gilman AG, eds., Nies AS, Rall TW, Taylor P (1990) "Goodman and Gilman's the Pharmacological Basis of Therapeutics." New York, NY: Pergamon Press Inc.
- (2012) "Product Information. Fycompa (perampanel)." Eisai Inc
- (2015) "Product Information. Rexulti (brexpiprazole)." Otsuka America Pharmaceutical, Inc.
Moderate:
ketamine Food/Lifestyle
Applies to: ketamine
Generally avoid
Alcohol may potentiate some of the pharmacologic effects of ketamine. Use in combination may result in additive central nervous system (CNS) depression and/or impairment of judgment, thinking, and psychomotor skills.
Generally avoid
Coadministration of oral ketamine with grapefruit juice may significantly increase the plasma concentrations of S(+) ketamine, the dextrorotatory enantiomer of ketamine. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruit. Inhibition of hepatic CYP450 3A4 may also contribute. When a single 0.2 mg/kg dose of S(+) ketamine was administered orally on study day 5 with grapefruit juice (200 mL three times daily for 5 days) in 12 healthy volunteers, mean S(+) ketamine peak plasma concentration (Cmax) and systemic exposure (AUC) increased by 2.1- and 3.0-fold, respectively, compared to administration with water. In addition, the elimination half-life of S(+) ketamine increased by 24% with grapefruit juice, and the ratio of the main metabolite norketamine to ketamine was decreased by 57%. The pharmacodynamics of ketamine were also altered by grapefruit juice. Specifically, self-rated relaxation was decreased and performance in the digit symbol substitution test was increased with grapefruit juice, but other behavioral or analgesic effects were not affected.
Management
Patients receiving ketamine should not drink alcohol. Caution is advised when ketamine is used in patients with acute alcohol intoxication or a history of chronic alcoholism. Following anesthesia with ketamine, patients should be counseled to avoid hazardous activities requiring complete mental alertness and motor coordination, such as driving or operating hazardous machinery, for at least 24 hours and until they know how the medication affects them. Patients treated with oral ketamine should also avoid consumption of grapefruit and grapefruit juice during treatment. Otherwise, dosage reductions of oral ketamine should be considered.
References (4)
- Cerner Multum, Inc. "UK Summary of Product Characteristics."
- Cerner Multum, Inc. "Australian Product Information."
- (2009) "Product Information. Ketalar (ketamine)." JHP Pharmaceuticals
- Peltoniemi MA, Saari TI, Hagelberg NM, Laine K, Neuvonen PJ, Olkkola KT (2012) "S-ketamine concentrations are greatly increased by grapefruit juice." Eur J Clin Pharmacol, 68, p. 979-86
Disease interactions
19 potential interactions Applies to: 17 conditions, including High Blood Pressure, Depression, Gastritis/Duodenitis, Heart Disease, and Peptic Ulcer.
Acute Alcohol Intoxication
Major:
chloral hydrate
Chloral hydrate has a major potential interaction with Acute Alcohol Intoxication.
Anxiolytic, sedative, and hypnotic agents should generally not be given to patients with acute alcohol intoxication exhibiting depressed vital signs. The central nervous system depressant effects of these agents may be additive with those of alcohol. Severe respiratory depression and death may occur. Therapy with such agents should be administered cautiously in patients who might be prone to acute alcohol intake.
Alcoholism
Major:
chloral hydrate
Chloral hydrate has a major potential interaction with Alcoholism.
Anxiolytic, sedative, and hypnotic agents have the potential to cause dependence and abuse. Tolerance as well as physical and psychological dependence can develop, particularly after prolonged use of excessive dosages, and abrupt cessation and/or a reduction in dosage may precipitate withdrawal symptoms. In patients who have developed tolerance, overdosage can still produce respiratory depression and death. Therapy with anxiolytic, sedative, and hypnotic agents should be administered cautiously and for as brief a period as possible. Addiction-prone individuals, such as those with a history of alcohol or substance abuse, should be under careful surveillance or medical supervision when treated with these agents. In addition, it may be prudent to refrain from dispensing large quantities of medication to such patients. After prolonged use or if dependency is suspected, withdrawal of medication should be undertaken gradually using a dosage-tapering schedule.
Moderate:
ketamine
Ketamine has a moderate potential interaction with Alcoholism.
Ketamine should be used with caution in the chronic alcoholic and the acutely alcohol-intoxicated patient.
Asphyxia
Moderate:
chloral hydrate
Chloral hydrate has a moderate potential interaction with Asphyxia.
Oral anxiolytic, sedative, and hypnotic agents may cause respiratory depression and apnea when given in high dosages or following acute overdose. However, some patients may be susceptible at commonly used dosages, including the elderly, debilitated or severely ill patients, those receiving other CNS depressants, and those with limited ventilatory reserve, chronic pulmonary insufficiency or other respiratory disorders. Therapy with anxiolytic, sedative, and hypnotic agents should be administered cautiously in these patients. Appropriate monitoring and individualization of dosage are recommended.
Depression
Major:
chloral hydrate
Chloral hydrate has a major potential interaction with Depression.
A variety of abnormal thinking and behavior changes have been reported to occur in association with the use of most anxiolytics, sedatives and hypnotics. Some of these changes include decreased inhibition, aggressiveness, agitation, and hallucinations. These drugs can cause or exacerbate mental depression and cause suicidal behavior and ideation. Therapy with these drugs should be administered cautiously in patients with a history of depression or other psychiatric disorders. Patients should be monitored for any changes in mood or behavior. It may be prudent to refrain from dispensing large quantities of medication to these patients.
Drug Dependence
Major:
chloral hydrate
Chloral hydrate has a major potential interaction with Drug Dependence.
Anxiolytic, sedative, and hypnotic agents have the potential to cause dependence and abuse. Tolerance as well as physical and psychological dependence can develop, particularly after prolonged use of excessive dosages, and abrupt cessation and/or a reduction in dosage may precipitate withdrawal symptoms. In patients who have developed tolerance, overdosage can still produce respiratory depression and death. Therapy with anxiolytic, sedative, and hypnotic agents should be administered cautiously and for as brief a period as possible. Addiction-prone individuals, such as those with a history of alcohol or substance abuse, should be under careful surveillance or medical supervision when treated with these agents. In addition, it may be prudent to refrain from dispensing large quantities of medication to such patients. After prolonged use or if dependency is suspected, withdrawal of medication should be undertaken gradually using a dosage-tapering schedule.
Esophageal Ulceration
Moderate:
chloral hydrate
Chloral hydrate has a moderate potential interaction with Esophageal Ulceration.
Chloral hydrate may cause esophageal and gastric irritation. Oral use of chloral hydrate should be avoided in patients with esophagitis, gastritis, duodenitis, or peptic ulcer disease.
Esophagitis
Moderate:
chloral hydrate
Chloral hydrate has a moderate potential interaction with Esophagitis.
Chloral hydrate may cause esophageal and gastric irritation. Oral use of chloral hydrate should be avoided in patients with esophagitis, gastritis, duodenitis, or peptic ulcer disease.
Gastritis/Duodenitis
Moderate:
chloral hydrate
Chloral hydrate has a moderate potential interaction with Gastritis/Duodenitis.
Chloral hydrate may cause esophageal and gastric irritation. Oral use of chloral hydrate should be avoided in patients with esophagitis, gastritis, duodenitis, or peptic ulcer disease.
Glaucoma/Intraocular Hypertension
Moderate:
chloral hydrate
Chloral hydrate has a moderate potential interaction with Glaucoma/Intraocular Hypertension.
Some hypnotic drugs can have an anticholinergic effect and should be used with caution in patients with glaucoma, and trouble urinating due to retention or enlarged prostate.
Heart Disease
Moderate:
chloral hydrate
Chloral hydrate has a moderate potential interaction with Heart Disease.
Although continued use of chloral hydrate at therapeutic dosages has not been associated with deleterious effects on the heart, large doses may produce peripheral vasodilation, hypotension, arrhythmias, and myocardial depression. High dosages of chloral hydrate should be avoided in patients with severe cardiac disease.
High Blood Pressure
Major:
ketamine
Ketamine has a major potential interaction with High Blood Pressure.
The use of ketamine is contraindicated in patients whom a significant elevation of blood pressure would constitute a serious hazard. It is recommended to monitor cardiac function continually during a procedure in patients with hypertension or cardiac decompensation.
Liver Disease
Major:
chloral hydrate
Chloral hydrate has a major potential interaction with Liver Disease.
The use of chloral hydrate is contraindicated in patients with marked renal and/or hepatic impairment due to the potential for significant drug and metabolite accumulation. Chloral hydrate is metabolized by the liver and erythrocytes to the pharmacologically active compound, trichloroethanol (TCE), which has a plasma half-life of 8 to 12 hours. TCE is then metabolized further by both the liver and kidney to inactive substances that are slowly excreted in the urine. High plasma levels of chloral hydrate and TCE may produce respiratory depression and adverse cardiovascular effects such as peripheral vasodilation, hypotension, arrhythmias, and myocardial depression.
Moderate:
chloral hydrate
Chloral hydrate has a moderate potential interaction with Liver Disease.
In general, anxiolytics, sedatives and hypnotics are extensively metabolized by the liver. Their plasma clearance may be decreased and their half-life prolonged in patients with impaired hepatic function. Therapy with these drugs should be administered cautiously in patients with liver disease (some are not recommended in severe liver impairment), and the dosage should be adjusted accordingly. Laboratory testing is recommended prior and during treatment.
Peptic Ulcer
Moderate:
chloral hydrate
Chloral hydrate has a moderate potential interaction with Peptic Ulcer.
Chloral hydrate may cause esophageal and gastric irritation. Oral use of chloral hydrate should be avoided in patients with esophagitis, gastritis, duodenitis, or peptic ulcer disease.
Pulmonary Impairment
Moderate:
chloral hydrate
Chloral hydrate has a moderate potential interaction with Pulmonary Impairment.
Oral anxiolytic, sedative, and hypnotic agents may cause respiratory depression and apnea when given in high dosages or following acute overdose. However, some patients may be susceptible at commonly used dosages, including the elderly, debilitated or severely ill patients, those receiving other CNS depressants, and those with limited ventilatory reserve, chronic pulmonary insufficiency or other respiratory disorders. Therapy with anxiolytic, sedative, and hypnotic agents should be administered cautiously in these patients. Appropriate monitoring and individualization of dosage are recommended.
Renal Dysfunction
Major:
chloral hydrate
Chloral hydrate has a major potential interaction with Renal Dysfunction.
The use of chloral hydrate is contraindicated in patients with marked renal and/or hepatic impairment due to the potential for significant drug and metabolite accumulation. Chloral hydrate is metabolized by the liver and erythrocytes to the pharmacologically active compound, trichloroethanol (TCE), which has a plasma half-life of 8 to 12 hours. TCE is then metabolized further by both the liver and kidney to inactive substances that are slowly excreted in the urine. High plasma levels of chloral hydrate and TCE may produce respiratory depression and adverse cardiovascular effects such as peripheral vasodilation, hypotension, arrhythmias, and myocardial depression.
Respiratory Arrest
Moderate:
chloral hydrate
Chloral hydrate has a moderate potential interaction with Respiratory Arrest.
Oral anxiolytic, sedative, and hypnotic agents may cause respiratory depression and apnea when given in high dosages or following acute overdose. However, some patients may be susceptible at commonly used dosages, including the elderly, debilitated or severely ill patients, those receiving other CNS depressants, and those with limited ventilatory reserve, chronic pulmonary insufficiency or other respiratory disorders. Therapy with anxiolytic, sedative, and hypnotic agents should be administered cautiously in these patients. Appropriate monitoring and individualization of dosage are recommended.
Urinary Retention
Moderate:
chloral hydrate
Chloral hydrate has a moderate potential interaction with Urinary Retention.
Some hypnotic drugs can have an anticholinergic effect and should be used with caution in patients with glaucoma, and trouble urinating due to retention or enlarged prostate.
More resources
chloral hydrate
A total of 367 drugs are known to interact with chloral hydrate.
- Chloral hydrate is in the drug class miscellaneous anxiolytics, sedatives and hypnotics.
- Chloral hydrate is used to treat the following conditions:
ketamine
A total of 430 drugs are known to interact with ketamine.
- Ketamine is in the drug class general anesthetics.
-
Ketamine is used to treat the following conditions:
- Anesthesia
- Depression (off-label)
- Pain (off-label)
Drug Interaction Classification
| Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
| Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
| Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan. | |
| No interaction information available. |
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.