Dr. Allen is Editor-in-Chief of the International Journal of Pharmaceutical Compounding, CEO of the Midwest Institute of Research and Technology, and Professor Emeritus of the University of Oklahoma HSC College of Pharmacy. He is a consultant to compounding pharmacists and the pharmaceutical industry and currently develops and teaches pharmaceutics courses online at various universities throughout the US.

He obtained his B.S. and M.S. in Pharmacy from the University of Oklahoma College of Pharmacy in 1966 and 1970, respectively. He completed a residency in hospital pharmacy at the U.S. Public Health Service Hospital in Boston, MA in 1966-67. He received the Ph.D. in Pharmaceutics from the University of Texas at Austin in 1972.

He taught at the University of Oklahoma College of Pharmacy (where he opted for early retirement in 1998) where he was Professor and Chair, Department of Medicinal Chemistry and Pharmaceutics. In 1996, he initiated the International Journal of Pharmaceutical Compounding, and serves as Editor-in-Chief. In addition, he is a consultant in pharmacy and pharmaceutics to a number of pharmaceutical companies, and writes for numerous journals and textbooks.

Dr. Allen is a Fellow of AFPE(1968), ACA (1995), APhA-APRS(1996), and IACP (1998). He received the J. Leon Lascoff Memorial Award for Outstanding Service to the Profession of Pharmacy in 1998; the highest award given by the American College of Apothecaries. He has also received the AStimulation of Research Award@ from the American Pharmaceutical Association (1998). He has served as a member of the U.S. Pharmacopeia Committee of Revision 1990 to 2000), and is currently serving (2005-2010) on the U.S. Pharmacopeia as Chair of the Expert Committee on Pharmacy Compounding, and as a member of the Nomenclature and Labeling Expert Committee, Standardized Imprint Code Project Team, and the USP Executive Committee. He has also served on the FDA Advisory Committee on Pharmaceutical Compounding. He has served in numerous positions in the APhA Academy of Pharmaceutical Research and Science and served on the APhA Board of Trustees for 1999-2000. His research interests are in the areas of drug dosage form design/development and drug stability/compatibility. He is currently working on both national and international projects involving new drug product formulations.

He has supervised 17 M.S. students and 8 Ph.D. students. In addition, he has been awarded 12 patents in the field of drug formulations, with others pending, both nationally and internationally. He has over 100 experimental publications in peer-reviewed scientific journals; over 100 peer-reviewed experimental abstracts; 25 books, chapters and monographs; over 300 professional publications, 21 film/book reviews; co-author on 3 textbooks and sole author of 2 textbooks, currently being revised for the 2nd edition. His textbooks now appear in English, Portuguese and Arabic. He continues to be active in teaching pharmacy courses (both on-site and internet courses) at universities throughout the U.S. and in speaking to professional and scientific organizations nationally and internationally.