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Drug Interactions between brexanolone and Inapsine

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

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Interactions between your drugs

Major

droPERidol brexanolone

Applies to: Inapsine (droperidol) and brexanolone

MONITOR CLOSELY: Coadministration with central nervous system (CNS) depressants (e.g., alcohol, benzodiazepines, opioids) or antidepressants may enhance the sedative effects of brexanolone and increase the likelihood or severity of sedation-related adverse reactions. Patients treated with brexanolone are at risk of excessive sedation or sudden loss of consciousness during administration. In clinical studies, 5% of patients receiving brexanolone infusion experienced sedation and somnolence that required dose interruption, compared to 0% of patients receiving placebo. Some patients also reported to have loss of consciousness or altered state of consciousness during the brexanolone infusion (4% vs. 0%). All patients recovered from loss or altered state of consciousness after dose interruption, with full recovery time ranging from 15 to 60 minutes. There was no clear association between loss or alteration of consciousness and pattern or timing of dose. Not all patients who experienced a loss or alteration of consciousness reported sedation or somnolence before the episode.

MANAGEMENT: Caution is advised during concomitant use of brexanolone with CNS depressants, antidepressants, or other agents that cause sedation. Patients should be closely monitored for excessive sedation and sudden loss of consciousness and have continuous pulse oximetry monitoring. During the brexanolone infusion, monitor for sedative effects every 2 hours during planned, non-sleep periods, and immediately stop the infusion if there are signs or symptoms of excessive sedation. After symptoms resolve, the infusion may be resumed at the same or lower dose as clinically appropriate. If pulse oximetry reveals hypoxia, immediately stop the infusion and do not resume infusion following resolution of the hypoxia. Patients should be cautioned against driving, operating machinery, or engaging in potentially hazardous activities requiring mental alertness and motor coordination until sedative effects of brexanolone and other concomitant medications have dissipated. Patients must be accompanied during interactions with their child(ren) while receiving brexanolone because of the potential for excessive sedation and sudden loss of consciousness.

References (1)
  1. (2019) "Product Information. Zulresso (brexanolone)." Sage Therapeutics, Inc.

Drug and food interactions

Major

droPERidol food

Applies to: Inapsine (droperidol)

MONITOR CLOSELY: The use of droperidol has been associated with QT interval prolongation, torsade de pointes and other serious arrhythmias, and sudden death. The concurrent administration of agents that can produce hypokalemia and/or hypomagnesemia (e.g., potassium-wasting diuretics, amphotericin B, cation exchange resins), drugs known to increase the QT interval (e.g., phenothiazines, tricyclic antidepressants, antiarrhythmic agents, etc.), certain other drugs (benzodiazepines, volatile anesthetics, intravenous opiates), or alcohol abuse may increase the risk of prolonged QT syndrome. In addition, central nervous system- and/or respiratory-depressant effects may be additively or synergistically increased in patients taking droperidol with certain other drugs that cause these effects, especially in elderly or debilitated patients.

MANAGEMENT: The manufacturer recommends extreme caution if droperidol must be given concomitantly with these agents. The dosage of droperidol should be individualized and titrated to the desired effect. Routine vital sign and ECG monitoring is recommended. When droperidol is used in combination with other drugs that cause CNS and/or respiratory depression, patients should be monitored for potentially excessive or prolonged CNS and respiratory depression. 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 doctor if they experience excessive or prolonged CNS effects that interfere with their normal activities.

References (6)
  1. (2001) "Product Information. Inapsine (droperidol)." Janssen Pharmaceuticals
  2. Glassman AH, Bigger JT Jr (2001) "Antipsychotic drugs: prolonged QTc interval, torsade de pointes, and sudden death." Am J Psychiatry, 158, p. 1774-82
  3. Cerner Multum, Inc. "UK Summary of Product Characteristics."
  4. Canadian Pharmacists Association (2006) e-CPS. http://www.pharmacists.ca/function/Subscriptions/ecps.cfm?link=eCPS_quikLink
  5. Cerner Multum, Inc. "Australian Product Information."
  6. EMA. European Medicines Agency. European Union (2013) EMA - List of medicines under additional monitoring. http://www.ema.europa.eu/ema/index.jsp?curl=pages/regulation/document_listing/document_listing_000366.jsp&mid=WC0b01ac058067c852
Moderate

droPERidol food

Applies to: Inapsine (droperidol)

MONITOR: Smoking cessation may lead to elevated plasma concentrations and enhanced pharmacologic effects of drugs that are substrates of CYP450 1A2 (and possibly CYP450 1A1) and/or certain drugs with a narrow therapeutic index (e.g., flecainide, pentazocine). One proposed mechanism is related to the loss of CYP450 1A2 and 1A1 induction by polycyclic aromatic hydrocarbons in tobacco smoke; when smoking cessation agents are initiated and smoking stops, the metabolism of certain drugs may decrease leading to increased plasma concentrations. The mechanism by which smoking cessation affects narrow therapeutic index drugs that are not known substrates of CYP450 1A2 or 1A1 is unknown. The clinical significance of this interaction is unknown as clinical data are lacking.

MANAGEMENT: Until more information is available, caution is advisable if smoking cessation agents are used concomitantly with drugs that are substrates of CYP450 1A2 or 1A1 and/or those with a narrow therapeutic range. Patients receiving smoking cessation agents may require periodic dose adjustments and closer clinical and laboratory monitoring of medications that are substrates of CYP450 1A2 or 1A1.

References (4)
  1. (2024) "Product Information. Cytisine (cytisinicline)." Consilient Health Ltd
  2. jeong sh, Newcombe D, sheridan j, Tingle M (2015) "Pharmacokinetics of cytisine, an a4 b2 nicotinic receptor partial agonist, in healthy smokers following a single dose." Drug Test Anal, 7, p. 475-82
  3. Vaughan DP, Beckett AH, Robbie DS (1976) "The influence of smoking on the intersubject variation in pentazocine elimination." Br J Clin Pharmacol, 3, p. 279-83
  4. Zevin S, Benowitz NL (1999) "Drug interactions with tobacco smoking: an update" Clin Pharmacokinet, 36, p. 425-38

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.

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