Tabriz University of Medical Sciences BioImpacts 2228-5652 4 3 2014 09 28 Pharmacognosy: Science of natural products in drug discovery 109 110 10.15171/bi.2014.001 EN Ilkay Erdogan Orhan EDITORIAL 10.15171/bi.2014.001 2014 09 15 Pharmacognosy deals with the natural drugs obtained fromorganisms such as most plants, microbes, and animals. Up todate, many important drugs including morphine, atropine,galanthamine, etc. have originated from natural sources whichcontinue to be good model molecules in drug discovery.Traditional medicine is also a part of pharmacognosy and mostof the third world countries still depend on the use of herbalmedicines. Consequently, pharmacognosy always keeps itspopularity in pharmaceutical sciences and plays a critical role indrug discovery.