Dr. Khawaja Husnain Haider obtained his PhD from University of Strathclyde, Glasgow, UK. Currently he is working as Associate Professor and teaching undergraduate Medical Students using Problem Based Learning approach, SRC at Kingdom of Saudi Arabia. Previously he was appointed as Research Scientist, Associate Professor, Assistant Professor at University of Cincinnati Medical Center, Cincinnati, Ohio, USA, Research Scientist at National University Medical Institutes, National University of Singapore, Singapore, and Associate Professor at University of the Punjab, Lahore-Pakistan. Dr. Khawaja received honors includes Gold Medal for standing first in the order of merit in the University during post-graduate M. Pharmacy studies, Charles Wallace Trust Merit Scholarship (UK), and KOSEF Merit Award (South Korea) for post-doctoral Fellowship. He has supervised 13 masters students thesis. He is also serving as reviewer for number of refereed journals. He also completed 12 research projects as principal investigator and co-investigator. He has published 125 research articles in journals, 9 book chapters, and 84 abstracts contributed as author/co-author.