Secondary Objectives B)To determine gastrointestinal transit parameters of two delayed-release diclofenac potassium formulations C)To determine the plasma concentrations of diclofenac at each PK sampling point post-administration of two delayed-release diclofenac potassium formulations D)To assess and compare between the two delayed-release diclofenac potassium formulations, as a minimum, the following PK parameters: tlag, tmax, Cmax and AUC0-15h