Interacción de Drospirenona y etinilestradiol con Fosaprepitant
Drospirenona y etinilestradiol con Fosaprepitant: ambas etiquetas de prescripción describen una interacción que por lo general requiere seguimiento, un cambio de dosis o espaciar las tomas.
Por lo general, manejable con seguimiento o un cambio de dosis. Informe a su farmacéutico de que toma ambos.
Qué dicen las etiquetas de la FDA
De la etiqueta de Drospirenona y etinilestradiol (Yaz) · vigente desde 2025-05-29
Consider monitoring serum potassium concentration in high-risk patients who take a strong CYP3A4 inhibitor long-term and concomitantly.
Concomitant administration of moderate or strong CYP3A4 inhibitors such as azole antifungals (e.g., ketoconazole, itraconazole, voriconazole, fluconazole), verapamil, macrolides (e.g., clarithromycin, erythromycin), diltiazem, and grapefruit juice can increase the plasma concentrations of the estrogen or the progestin or both.
In a clinical drug-drug interaction study conducted in premenopausal women, once daily co-administration of DRSP 3 mg/EE 0.02 mg containing tablets with strong CYP3A4 inhibitor, ketoconazole 200 mg twice daily for 10 days resulted in a moderate increase of DRSP systemic exposure.
In a clinical drug-drug interaction study conducted in 20 premenopausal women, co-administration of a DRSP (3 mg)/EE (0.02 mg) COC with the strong CYP3A4 inhibitor ketoconazole (200 mg twice daily) for 10 days increased the AUC(0-24h) of DRSP and EE by 2.68-fold (90% CI: 2.44, 2.95) and 1.40-fold (90% CI: 1.31, 1.49), respectively.
Strong CYP3A4 inhibitors include azole antifungals (e.g. ketoconazole, itraconazole, voriconazole), HIV/HCV protease inhibitors (e.g., indinavir, boceprevir), and clarithromycin [see Clinical Pharmacology ( 12.3 )] .
De la etiqueta de Fosaprepitant (FOCINVEZ) · vigente desde 2026-03-30
Hormonal Contraceptives: Efficacy of contraceptives may be reduced during treatment and for 1 month following administration of the last dose of either fosaprepitant or oral aprepitant.
Risk of Reduced Efficacy of Hormonal Contraceptives Upon coadministration with fosaprepitant, the efficacy of hormonal contraceptives may be reduced during administration of and for 28 days following the last dose of fosaprepitant [see Clinical Pharmacology ( 12.3 )] .
Hormonal Contraceptives Clinical Impact Decreased hormonal exposure during administration of and for 28 days after administration of the last dose of fosaprepitant [see Warnings and Precautions ( 5.5 ), Use in Specific Populations ( 8.3 ), and Clinical Pharmacology ( 12.3 )] .
Examples birth control pills, transdermal systems, implants, and certain intrauterine systems CYP2C9 Substrates Warfarin Clinical Impact Decreased warfarin exposure and decreased prothrombin time (INR) [see Warnings and Precautions ( 5.4 ) and Clinical Pharmacology ( 12.3 )] .
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Abrir en el verificadorNo es un consejo médico. Interaction Checker cita el texto de las etiquetas de la FDA y las hojas informativas de los NIH. Que una interacción sea importante en su caso depende de las dosis, el momento de las tomas, la función renal y hepática y otras afecciones. Confírmelo con un farmacéutico o un prescriptor.