Dr. Oscar Herrera-Calderon is a Professor at the Faculty of Pharmacy and Biochemistry, Universidad Nacional Mayor de San Marcos. He did his Master in Pharmacology (Experimental pharmacology) and doctorate at the Faculty of Pharmacy and Biochemistry, both from Universidad Nacional Mayor de San Marcos. He is a member of the Pharmacognosy Brazilian Society and has served on an organizing committee of many National conferences. He is also serving as a Review Editor for Experimental Pharmacology and Drug Discovery (Frontiers in Pharmacology). His research expertise include chronic diseases such as cancer and neural mechanisms responsible for cognitive and behavioral aspects such as stress and epilepsy. The goal of his research, in particular, is to elucidate both the effects and the mechanisms of action of herbal medicine or complementary and alternative medicine (CAM) using animal models of cancer and stress-related diseases such as anxiety, depression, insomnia, or learning and memory.