Diurnal variation in pharmacokinetics and pharmacodynamics of nizatidine in healthy volunteers and in patients with duodenal ulcer:: V. Mahachai, F. Jamali, A.B.R. Thomson, P. Kirdeikis, M. Tavernini, L. Zuk, B. Marriage, and I. Simpson: Faculty of Pharmacy and the Nutrition and Metabolism Research Group, Division of Gastroenterology, and Clinical Investigation Unit: University of Alberta, CANADA and Chulalongkorn University, THAILAND