“Glycyrrhizae Radix, Rhei Rhizoma, Scutellariae Radix, …, Zizyphi Fructus, Zingiberis Rhizoma (dry), Coptidis Rhizoma , Ephedrae Herba and Asiasari Radix significantly … the sensitivity to a MDR1 substrate paclitaxel , whereas none of the herbal extracts used had any effect on the sensitivity to 5-fluorouracil, which is not a substrate for MDR1.”