The recommended dose of suvorexant is 5 mg when it is combined with the following drugs because these drugs moderately block the breakdown of suvorexant in the liver: 1 aprepitant (Emend), 2 atazanavir (Reyataz), 3 ciprofloxacin (Cipro), 4 diltiazem (Cardizem), 5 erythromycin, 6 ... (more items)