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Drug Interactions between Butisol Sodium and mirabegron

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

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Interactions between your drugs

Minor

butabarbital mirabegron

Applies to: Butisol Sodium (butabarbital) and mirabegron

Coadministration with inducers of CYP450 3A4 and/or P-glycoprotein may decrease the plasma concentrations of mirabegron, which has been shown in vitro to be a substrate of the isoenzyme and efflux transporter. However, in vivo results indicate that these pathways may play a limited role in the overall elimination. In healthy study subjects, mirabegron peak plasma concentration (Cmax) and systemic exposure (AUC) decreased by less than 50% when a single 100 mg dose of mirabegron was administered following multiple dosing of rifampin 600 mg once daily. No dosage adjustment is recommended when mirabegron is administered in combination with rifampin and probably other CYP450 3A4/P-gp inducers.

References

  1. (2012) "Product Information. Myrbetriq (mirabegron)." Astellas Pharma US, Inc

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Drug and food interactions

Major

butabarbital food

Applies to: Butisol Sodium (butabarbital)

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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Minor

mirabegron food

Applies to: mirabegron

Food reduces the oral absorption and bioavailability of mirabegron. According to the product labeling, administration of a 50 mg tablet with a high-fat meal decreased mirabegron peak plasma concentration (Cmax) and systemic exposure (AUC) by 45% and 17%, respectively, whereas administration with a low-fat meal decreased mirabegron Cmax and AUC by 75% and 51%, respectively. In phase 3 clinical studies demonstrating both safety and efficacy, mirabegron was administered without regards to food content and intake. Therefore, mirabegron can be taken with or without food at the recommended dosage.

References

  1. (2012) "Product Information. Myrbetriq (mirabegron)." Astellas Pharma US, 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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