An open label, balanced, randomized, single dose, two-treatment, four period, two-sequence, crossover, fully replicate, bioequivalence study comparing Fexofenadine Hydrochloride and Pseudoephedrine Hydrochloride Extended Release Tablet USP 180 mg/240 mg, Manufactured by: Sun Pharmaceutical Industries Limited, India with Allegra-D® 24 HR (Fexofenadine HCl and Pseudoephedrine HCl Extended Release Tablets 180 mg + 240 mg) tablets, Distributed by: Chattem Inc., a Sanofi Company Chattanooga, TN 37409-0219, USA, in healthy, adult, human participants under fasting conditions.