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Drug Interactions between BuSpar and esketamine

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

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Interactions between your drugs

Major

busPIRone esketamine

Applies to: BuSpar (buspirone) and esketamine

MONITOR CLOSELY: Concomitant use of esketamine with central nervous system (CNS) depressants may increase sedation and impairment of attention, judgment, thinking, reaction speed, and psychomotor skills. In clinical trials, 49% to 61% of esketamine-treated patients developed sedation based on the Modified Observer's Alertness/Sedation scale (MOAA/s), and 0.3% of esketamine-treated patients experienced loss of consciousness (MOAA/s score of 0). In the MOAA/s scale, 5 means "responds readily to name spoken in normal tone" and 0 means "no response after painful trapezius squeeze," and any decrease in MOAA/s from pre-dosing of esketamine is considered to indicate presence of sedation. Dose-related increases in the incidence of sedation were also observed in a fixed-dose study. Additionally, cognitive performance decline was reported in a study in healthy volunteers who received a single intranasal dose of esketamine. Compared to placebo-treated subjects, esketamine-treated subjects required a greater effort to complete cognitive tests at 40 minutes post-dose, although results were comparable between the two groups at 2 hours post-dose. Drowsiness was comparable after 4 hours post-dose.

MANAGEMENT: Caution is advised and patients should be closely monitored during concomitant use of esketamine with CNS depressants or other drugs that can cause sedation or dizziness. Due to the risk of delayed or prolonged sedation and other adverse effects, patients should be monitored for at least 2 hours after esketamine administration, followed by an assessment to determine when the patient is considered clinically stable and ready to leave the healthcare setting. Patients should be instructed not to engage in potentially hazardous activities that require complete mental alertness and motor coordination, such as driving a motor vehicle or operating machinery, until the next day after a restful sleep.

References (4)
  1. Cerner Multum, Inc. "UK Summary of Product Characteristics."
  2. Cerner Multum, Inc. "Australian Product Information."
  3. Cerner Multum, Inc. (2015) "Canadian Product Information."
  4. (2019) "Product Information. Spravato (esketamine)." Janssen Pharmaceuticals

Drug and food interactions

Moderate

busPIRone food

Applies to: BuSpar (buspirone)

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

ADJUST DOSING INTERVAL: In a small, randomized, crossover study, the consumption of large amounts of grapefruit juice (compared to water) was associated with significantly increased plasma buspirone concentrations, slightly prolonged elimination half-lives, and delayed times to reach peak drug concentration. The perceived pharmacodynamic effect of buspirone, as measured by subjective drowsiness and overall subjective drug effect, was also enhanced by grapefruit juice. These alterations may stem from the delay of gastric emptying as well as inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall induced by certain compounds present in grapefruits.

MANAGEMENT: Patients receiving buspirone should be advised to avoid consumption of alcohol. Patients also should preferably avoid the consumption of large amounts of grapefruits and grapefruit juice to prevent any undue fluctuations in plasma drug levels. If this is not possible, the buspirone dose should be taken at least 2 hours before or 8 hours after grapefruit or grapefruit juice. Monitoring for increased CNS depression is recommended.

References (3)
  1. (2002) "Product Information. Buspar (buspirone)." Bristol-Myers Squibb
  2. Lilja JJ, Kivisto KT, Backman JT, Lamberg TS, Neuvonen PJ (1998) "Grapefruit juice substantially increases plasma concentrations of buspirone." Clin Pharmacol Ther, 64, p. 655-60
  3. Bailey DG, Dresser GR, Kreeft JH, Munoz C, Freeman DJ, Bend JR (2000) "Grapefruit-felodipine interaction: Effect of unprocessed fruit and probable active ingredients." Clin Pharmacol Ther, 68, p. 468-77
Moderate

esketamine food

Applies to: esketamine

GENERALLY AVOID: Concomitant use of esketamine with central nervous system (CNS) depressants such as alcohol may increase sedation and impairment of attention, judgment, thinking, reaction speed, and psychomotor skills.

ADJUST DOSING INTERVAL: Nausea and vomiting may occur following intranasal administration of esketamine. In clinical studies, nausea and vomiting were reported in approximately 25% and 10% of esketamine-treated patients, respectively.

MANAGEMENT: Patients receiving esketamine should be advised to avoid or limit the consumption of alcohol. In addition, to help prevent nausea and vomiting, patients should be advised not to eat for at least 2 hours before intranasal administration of esketamine and not to drink liquids for at least 30 minutes prior to administration.

References (2)
  1. Cerner Multum, Inc. "Australian Product Information."
  2. (2019) "Product Information. Spravato (esketamine)." Janssen Pharmaceuticals

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.

See also

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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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