Atomoxetine Hydrochloride and Fedratinib Hydrochloride
Determining the interaction of Atomoxetine Hydrochloride and Fedratinib Hydrochloride and the possibility of their joint administration.
In the database of official manuals used in the service creation an interaction registered by statistical results of studies was found, which can either lead to negative consequences for the patient health or strengthen a mutual positive effect. A doctor should be consulted to address the issue of joint drug administration.
Consumer:Consumer information for this interaction is not currently available.MONITOR: Coadministration with drugs that are inhibitors of CYP450 2D6 may increase the plasma concentrations of atomoxetine, which is primarily metabolized by the isoenzyme. In patients who are extensive metabolizers of CYP450 2D6 (approximately 93% of Caucasians and more than 98% of Asians and individuals of African descent), potent inhibitors of the isoenzyme such as fluoxetine and paroxetine have been shown to increase atomoxetine systemic exposure (AUC) by 6- to 8-fold and peak plasma concentration (Cmax) by 3- to 4-fold. These higher concentrations are similar to those observed in CYP450 2D6 poor metabolizers given the drug alone. In vitro studies suggest that coadministration of CYP450 2D6 inhibitors to poor metabolizers will not further increase atomoxetine plasma concentrations. MANAGEMENT: Pharmacologic response to atomoxetine should be monitored more closely whenever a CYP450 2D6 inhibitor is added to or withdrawn from therapy, as dosage adjustment of atomoxetine may be necessary in extensive metabolizers. During coadministration, patients should be advised to contact their physician if they experience excessive adverse effects of atomoxetine such as dizziness, dry mouth, anorexia, sleep disturbances, and palpitations. References Belle DJ, Ernest CS, Sauer JM, Smith BP, Thomasson HR, Witcher JW "Effect of potent CYP2D6 inhibition by paroxetine on atomoxetine pharmacokinetics." J Clin Pharmacol 42 (2002): 1219-27 "Product Information. Strattera (atomoxetine)." Lilly, Eli and Company, Indianapolis, IN.
Professional:MONITOR: Coadministration with drugs that are inhibitors of CYP450 2D6 may increase the plasma concentrations of atomoxetine, which is primarily metabolized by the isoenzyme. In patients who are extensive metabolizers of CYP450 2D6 (approximately 93% of Caucasians and more than 98% of Asians and individuals of African descent), potent inhibitors of the isoenzyme such as fluoxetine and paroxetine have been shown to increase atomoxetine systemic exposure (AUC) by 6- to 8-fold and peak plasma concentration (Cmax) by 3- to 4-fold. These higher concentrations are similar to those observed in CYP450 2D6 poor metabolizers given the drug alone. In vitro studies suggest that coadministration of CYP450 2D6 inhibitors to poor metabolizers will not further increase atomoxetine plasma concentrations.
MANAGEMENT: Pharmacologic response to atomoxetine should be monitored more closely whenever a CYP450 2D6 inhibitor is added to or withdrawn from therapy, as dosage adjustment of atomoxetine may be necessary in extensive metabolizers. During coadministration, patients should be advised to contact their physician if they experience excessive adverse effects of atomoxetine such as dizziness, dry mouth, anorexia, sleep disturbances, and palpitations.
- Belle DJ, Ernest CS, Sauer JM, Smith BP, Thomasson HR, Witcher JW "Effect of potent CYP2D6 inhibition by paroxetine on atomoxetine pharmacokinetics." J Clin Pharmacol 42 (2002): 1219-27
- "Product Information. Strattera (atomoxetine)." Lilly, Eli and Company, Indianapolis, IN.
Generic Name: atomoxetine
Brand name: Strattera
Synonyms: Atomoxetine, AtoMOXetine
Generic Name: fedratinib
Brand name: Inrebic
Synonyms: Fedratinib
In the course of checking the drug compatibility and interactions, data from the following reference sources was used: Drugs.com, Rxlist.com, Webmd.com, Medscape.com.
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