sulfinpirazon, nekateri dolgodelujoči sulfonamidi, tetraciklini, zaviralci MAO, kinolonski antibiotiki, probenecid, mikonazol, pentoksifilin (velik parenteralen odmerek), tritokalin, flukonazol.
sulphinpyrazone, certain long acting sulphonamides, tetracyclines, MAO-inhibitors, quinolone antibiotics, probenecid, miconazol, pentoxifylline (high dose parenteral), tritoqualine, fluconazole.