Drug Interaction Report

MONITOR: Coadministration with inhibitors of P-glycoprotein (P-gp), uridine diphosphate glucuronosyltransferase (UGT) 1A1 or 2B7, and/or breast cancer resistance protein (BCRP) may increase the plasma levels and risk of adverse effects of binimetinib. The proposed mechanism involves the reduced metabolic clearance of binimetinib through inhibition of P-gp, UGT 1A1, UGT 2B7, and/or BCRP. The clinical significance of this interaction is unknown as no clinically relevant drug interactions have been demonstrated with binimetinib.

MANAGEMENT: Until further information is available, caution is recommended if binimetinib must be used concomitantly with P-gp, UGT 1A1, UGT 2B7, and/or BCRP inhibitors. Binimetinib should be monitored more closely whenever a P-gp, UGT 1A1, UGT 2B7, and/or BCRP inhibitor is added to or withdrawn from therapy, and the binimetinib dosage adjusted as necessary.

GENERALLY AVOID: Alcohol may potentiate some of the pharmacologic effects of suvorexant. Use in combination may result in additive central nervous system depression and/or impairment of judgment, thinking, and psychomotor skills. In addition, alcohol may increase the risk of cognitive and complex behavioral changes associated with the use of hypnotics including suvorexant, such as amnesia, anxiety, hallucinations, sleep-driving, and other neuropsychiatric symptoms.

ADJUST DOSE: Grapefruit juice may significantly increase the plasma concentrations of suvorexant. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruit.

ADJUST DOSING INTERVAL: Administration with or soon after a meal may delay the gastrointestinal absorption of suvorexant. According to the product labeling, administration of suvorexant with a high-fat meal resulted in no meaningful change in peak plasma concentration (Cmax) or systemic exposure (AUC), but a delay in Tmax of approximately 1.5 hours.

MANAGEMENT: Concomitant use of suvorexant with alcohol should be avoided. Patients should be advised not to use suvorexant if they had alcohol that evening or before bed. Grapefruit juice should preferably be avoided; otherwise, the recommended dose of suvorexant is 5 mg when used with grapefruit juice and should not exceed 10 mg. Suvorexant may be taken with or without food; however, for faster sleep onset, suvorexant should not be administered with or soon after a meal.