1 Supporting Information hERG Channel Blocking Ipecac Alkaloids Identified by Combined In Silico – In Vitro Screening* Jadel M. Kratz 1** , Christina E. Mair 1** , Sarah K. Oettl 2** , Priyanka Saxena 3 , Olaf Scheel 4 , Daniela Schuster 5 , Steffen Hering 3 , Judith M. Rollinger 1 Affiliations 1 Department of Pharmacognosy, University of Vienna, Vienna, Austria 2 Institute of Pharmacy/Pharmacognosy, University of Innsbruck, Innsbruck, Austria 3 Department of Pharmacology and Toxicology, University of Vienna, Vienna, Austria 4 Cytocentrics Bioscience GmbH, Rostock, Germany 5 Institute of Pharmacy/Pharmaceutical Chemistry and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, Innsbruck, Austria Correspondence Prof. Dr. Judith M. Rollinger Department of Pharmacognosy Faculty of Life Sciences University of Vienna Althanstrasse 14 1090 Vienna Austria Phone: +43 1 4277 55255 Judith.Rollinger@univie.ac.at *Dedicated to Professor Dr. Dr. h.c. mult. Kurt Hostettmann. **These authors contributed equally to this work. © Georg Thieme Verlag KG · DOI 10.1055/s-0042-105572 · Planta Med · Kratz JM et al.