These active substances include e.g. antiarrhythmics (amiodarone, bepridil, quinidine, systemic lidocaine), antihistamines (astemizole, terfenadine), ergot derivatives (e.g. dihydroergotamine, ergonovine, ergotamine, methylergonovine), gastrointestinal motility agents (cisapride), neuroleptics (pimozide, sertindole), sedatives/hypnotics [triazolam, midazolam administered orally (for caution on parenterally administered midazolam, see section 4.5)] and HMG-CoA reductase inhibitors (simvastatin and lovastatin) (see section 4.5).
Med te učinkovine sodijo npr. antiaritmiki (amiodaron, bepridil, kinidin, sistemsko dani lidokain), antihistaminiki (astemizol, terfenadin), alkaloidi ergot (npr. dihidroergotamin, ergonovin, ergotamin in metilergonovin), učinkovine, ki vplivajo na motiliteto prebavnega trakta (cisaprid), nevroleptiki (pimozid, sertindol), sedativi/ hipnotiki [ triazolam, midazolam apliciran peroralno (za opozorila pri parenteralni aplikaciji midazolama glejte poglavje 4. 5) ] in inhibitorji HMG- CoA reduktaze (simvastatin in lovastatin) (glejte poglavje 4. 5).