Dataset from An Open-label, Randomized, Single Dose, Multi-stage, Cross-over Study to Determine the Relative Bioavailability of Fixed Dose Combination Products Containing a 3-oblong Dutasteride Soft Gel Capsule and Tamsulosin (0.5 mg Dutasteride /0.2 mg Tamsulosin HCl) Pellets Having a Range of Tamsulosin Release Rates Produced by Different Mixtures of Enteric Coated and Uncoated Pellets Relative to Harnal-D Tablets, in Healthy Male Subjects of North East Asian Ancestry.

This study is an open-label, randomized, single dose, multi-stage, cross-over study in healthy male subjects of North East Asian ancestry. The aims are to: - evaluate the pharmacokinetic parameters of several formulations of a fixed dose combination (FDC) capsule of dutasteride and tamsulosin hydrochloride (0.5 mg/0.2 mg) relative to co-administration of dutasteride 0.5 mg capsules and tamsulosin hydrochloride 0.2 mg tablets in the fasted state in order to define a formulation which is bioequivalent to a 0.2 mg orally disintegrating tamsulosin tablet, (Harnal-D Tablets) - determine the effect of food on the relative bioavailability of tamsulosin in the FDC product which is assessed to be bioequivalent to Harnal-D Tablets in the fasted state - assess the effect of water on the relative bioavailability of tamsulosin in Harnal-D Tablets in the fasted state - assess the safety and tolerability of dosing with the different FDC capsule formulations Subjects will receive single oral doses in at least one treatment period; treatment periods will be separated by a 5-10 day washout period. Blood samples for pharmacokinetic analysis will be taken at regular intervals after dosing. Safety will be assessed by measurement of blood pressure, heart rate and review of adverse events. Each stage of the study will enrol 18 subjects to ensure 16 complete. Subjects may consent to participate in more than one stage.