Arinet Artesunate Terfenadine
MajorArtesunate and terfenadine can both affect the heart's electrical rhythm, specifically by lengthening what doctors call the QT interval. Taking them together can add to this effect. Artesunate's leaflet lists terfenadine among the medicines that have this kind of interaction with it.
These medicines can affect each other in a serious way. Do not start taking them together unless your doctor has said it is OK. If you already take both, do not stop either one on your own: speak to your doctor or pharmacist soon.