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).