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Drug Interactions between guaifenesin / hydromorphone and methoxyflurane

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Moderate

HYDROmorphone methoxyflurane

Applies to: guaifenesin / hydromorphone and methoxyflurane

MONITOR: Opioids may decrease the minimum alveolar concentration required for inhalation anesthetics. When these agents are used concomitantly, less inhalation anesthetic may be required. In addition, inhalation anesthetics may cause respiratory depression which may be increased by opioid premedication or other agents causing respiratory depression.

MANAGEMENT: In general, anesthesia should be titrated to clinical effect by those experienced in anesthesia technique and in the care of patients receiving opioids. Patients should be monitored closely for respiratory depression. Supportive therapy should be provided if needed.

References

  1. (2001) "Product Information. Ultane (sevoflurane)." Abbott Pharmaceutical
  2. Inagaki Y, Kuzukawa A (1997) "Effects of epidural and intravenous buprenorphine on halothane minimum alveolar anesthetic concentration and hemodynamic responses." Anesth Analg, 84, p. 100-5

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Drug and food interactions

Major

HYDROmorphone food

Applies to: guaifenesin / hydromorphone

GENERALLY AVOID: Alcohol may potentiate the central nervous system (CNS) depressant effects of opioid analgesics including hydromorphone. Concomitant use may result in additive CNS depression and impairment of judgment, thinking, and psychomotor skills. In more severe cases, hypotension, respiratory depression, profound sedation, coma, or even death may occur.

GENERALLY AVOID: Consumption of alcohol while taking sustained-release formulations of hydromorphone may cause rapid release of the drug, resulting in high systemic levels of hydromorphone that may be potentially lethal even in opioid-tolerant patients. Alcohol appears to disrupt the extended release mechanism, causing 'dose-dumping' into the bloodstream. In 48 healthy volunteers, coadministration of a 12 mg dose of sustained-release hydromorphone with 240 mL of 40% (80 proof) alcohol resulted in a mean peak hydromorphone concentration (Cmax) approximately six times greater than when taken with water. One subject had a 16-fold increase in hydromorphone Cmax with 40% alcohol compared to water. In some subjects, coadministration with 8 ounces of 4% alcohol (equivalent to 2/3 of a typical serving of beer) resulted in almost twice the hydromorphone Cmax than when coadministered with water. The effect of alcohol was more pronounced in a fasted state.

MANAGEMENT: Patients taking sustained-release formulations of hydromorphone should not consume alcohol or use medications that contain alcohol on days of hydromorphone dosing. In general, potent narcotics such as hydromorphone should not be combined with alcohol.

References

  1. Levine B, Saady J, Fierro M, Valentour J (1984) "A hydromorphone and ethanol fatality." J Forensic Sci, 29, p. 655-9
  2. (2001) "Product Information. Dilaudid (hydromorphone)." Knoll Pharmaceutical Company
  3. FDA. U.S. Food and Drug Administration (2005) Healthcare Professional Sheet. FDA Alert [07/2005]: alcohol-palladone interaction. http://www.fda.gov/medwatch/SAFETY/2005/safety05.htm#Palladone

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Moderate

methoxyflurane food

Applies to: methoxyflurane

GENERALLY AVOID: Alcohol may potentiate some of the pharmacologic effects of central nervous system (CNS)-active agents. Use in combination may result in additive CNS depression and/or impairment of judgment, thinking, and psychomotor skills.

MANAGEMENT: Patients receiving CNS-active agents should be advised to avoid or limit consumption of alcohol. Ambulatory patients should be counseled against driving, operating machinery, or engaging in potentially 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

  1. Warrington SJ, Ankier SI, Turner P (1986) "Evaluation of possible interactions between ethanol and trazodone or amitriptyline." Neuropsychobiology, 15, p. 31-7
  2. 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.
  3. Cerner Multum, Inc. "UK Summary of Product Characteristics."
  4. (2012) "Product Information. Fycompa (perampanel)." Eisai Inc
  5. (2015) "Product Information. Rexulti (brexpiprazole)." Otsuka American Pharmaceuticals Inc
View all 5 references

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Therapeutic duplication warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.

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Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor 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.
Unknown No interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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