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Drug Interactions between Pentothal and zuranolone

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

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Interactions between your drugs

Moderate

thiopental zuranolone

Applies to: Pentothal (thiopental) and zuranolone

GENERALLY AVOID: Coadministration with central nervous system (CNS) depressants (e.g., alcohol, benzodiazepines, opioids) or antidepressants may enhance the sedative effect of zuranolone and increase the likelihood or severity of sedation-related adverse reactions. Zuranolone may cause CNS depressant effects such as somnolence, confusion, dizziness, and gait disturbance. In clinical trials, somnolence, dizziness, or confusion were reported at a higher percentage in patients treated with zuranolone compared to placebo which required a dosage reduction of zuranolone, treatment interruption, or cessation. One clinical study reported somnolence in 36% of patients treated with 50 mg zuranolone compared to 6% of patients treated with placebo.

MANAGEMENT: Concomitant use of zuranolone with CNS depressants should generally be avoided. Caution and close monitoring of CNS depressant effects is recommended if concomitant use of zuranolone with CNS depressants, antidepressants, or other agents that can cause sedation is required. If coadministration with another CNS depressant is considered unavoidable or if the patient experiences CNS depressant adverse effects within the 14 days treatment course, a dose reduction to 40 mg once daily for the remainder of the course is recommended. Patients should also be cautioned against driving, operating machinery, or engaging in potentially hazardous activities requiring mental alertness and motor coordination until at least 12 hours after administration of zuranolone.

References

  1. (2023) "Product Information. Zurzuvae (zuranolone)." Biogen Inc.

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Drug and food interactions

Major

thiopental food

Applies to: Pentothal (thiopental)

GENERALLY AVOID: Concurrent acute use of barbiturates and ethanol may result in additive CNS effects, including impaired coordination, sedation, and death. Tolerance of these agents may occur with chronic use. The mechanism is related to inhibition of microsomal enzymes acutely and induction of hepatic microsomal enzymes chronically.

MANAGEMENT: The combination of ethanol and barbiturates should be avoided.

References

  1. Gupta RC, Kofoed J (1966) "Toxological statistics for barbiturates, other sedatives, and tranquilizers in Ontario: a 10-year survey." Can Med Assoc J, 94, p. 863-5
  2. Misra PS, Lefevre A, Ishii H, Rubin E, Lieber CS (1971) "Increase of ethanol, meprobamate and pentobarbital metabolism after chronic ethanol administration in man and in rats." Am J Med, 51, p. 346-51
  3. Saario I, Linnoila M (1976) "Effect of subacute treatment with hypnotics, alone or in combination with alcohol, on psychomotor skills related to driving." Acta Pharmacol Toxicol (Copenh), 38, p. 382-92
  4. Stead AH, Moffat AC (1983) "Quantification of the interaction between barbiturates and alcohol and interpretation of fatal blood concentrations." Hum Toxicol, 2, p. 5-14
  5. Seixas FA (1979) "Drug/alcohol interactions: avert potential dangers." Geriatrics, 34, p. 89-102
View all 5 references

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Moderate

zuranolone food

Applies to: zuranolone

ADJUST DOSING INTERVAL: Food enhances the oral bioavailability of zuranolone. When administered with a low-fat meal (e.g., 400 to 500 calories, 25% fat), zuranolone peak plasma concentration (Cmax) and systemic exposure (AUC) increased by 3.5- and 1.8-fold, respectively, compared to administration under fasted conditions. Zuranolone was administered with food in the premarketing study population. The efficacy of zuranolone when administered in the fasted state is unknown.

GENERALLY AVOID: Concomitant use of zuranolone with central nervous system (CNS) depressants, including alcohol, may potentiate adverse effects such as somnolence, confusion, dizziness, and gait disturbance.

MANAGEMENT: Zuranolone must be administered with fat-containing food (e.g., 400 to 1,000 calories, 25% to 50% fat) according to the manufacturer. Patients should also be advised to avoid or limit consumption of alcohol and to avoid activities requiring mental alertness such as driving or operating hazardous machinery until at least 12 hours after administration of zuranolone.

References

  1. (2023) "Product Information. Zurzuvae (zuranolone)." Biogen Inc.

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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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