- Patients requiring the use of medication well-known contraindicated for concomitant use with lopinavir/ritonavir: amiodarone, astemizole, bepridil, bupropione, cisapride, clorazepate, clozapim, diazepam, encainide, flecainide, flurazepam, meperidine, midazolam, primozide, piroxicam, propafenone, propoxifeno, quinidine, rifabutin, terfenadine, triazolam, zolpidem, dihydroergotamine, ergotamine