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Drug Interactions between Tao and tasimelteon

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

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Interactions between your drugs

Moderate

troleandomycin tasimelteon

Applies to: Tao (troleandomycin) and tasimelteon

MONITOR: Coadministration with inhibitors of CYP450 1A2 and/or 3A4 may increase the plasma concentrations of tasimelteon, which is primarily metabolized by these isoenzymes. When tasimelteon was administered after 6 days of treatment with the potent CYP450 1A2 inhibitor fluvoxamine 50 mg/day, tasimelteon peak plasma concentration (Cmax) and systemic exposure (AUC) increased by 2- and 7-fold, respectively, compared to tasimelteon administered alone. When administered after 5 days of treatment with the potent CYP450 3A4 inhibitor ketoconazole 400 mg/day, tasimelteon AUC increased by approximately 50%.

MANAGEMENT: Caution is advised if tasimelteon is prescribed in combination with inhibitors of CYP450 1A2 and/or 3A4. Patients should be monitored for excessive sedation and other side effects.

References

  1. "Product Information. Hetlioz (tasimelteon)." Vanda Pharmaceuticals Inc (2014):

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Drug and food interactions

Moderate

tasimelteon food

Applies to: tasimelteon

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

ADJUST DOSING INTERVAL: Food may delay the absorption and onset of action of tasimelteon. According to the product labeling, administration of tasimelteon with a high-fat meal decreased peak plasma concentration (Cmax) by 44% and delayed the median time to reach Cmax by approximately 1.75 hours compared to administration in the fasted state.

MONITOR: Smoking induces CYP450 1A2 and may reduce the plasma concentrations of tasimelteon, which is metabolized by the isoenzyme. According to the product labeling, tasimelteon systemic exposure was approximately 40% lower in smokers than in nonsmokers.

MANAGEMENT: Patients receiving tasimelteon should be advised to avoid or limit consumption of alcohol. Tasimelteon should be taken without food. Patients who smoke may have a reduced therapeutic response to tasimelteon.

References

  1. "Product Information. Hetlioz (tasimelteon)." Vanda Pharmaceuticals Inc (2014):

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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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