Nebivolol Tablets 5 mg Relative to Nebilet Tablets 5 mg

Title A Bioequivalence study of a randomized, open-label, single dose, two-way crossover design with two-period, two-treatment, and two-sequence of Nebivolol tablets 5 mg relative to Nebilet tablets 5 mg in healthy Thai volunteers under fasting condition

Objectives The primary objective is to compare the rate and extent of absorption of a generic formulation with that of a reference formulation when given as equal labeled dose. The secondary objective is to evaluate the safety after oral administration of both test and reference formulation in healthy Thai volunteers.

Study Design Randomized, open-label, single dose, two-way crossover design with two-period, two-treatment, and two-sequence under fasting condition

Sample Size 46 Healthy Human Thai subjects. Four extra subjects if available, may be checked-in on the day of check in of period-I to compensate for any dropout prior to dosing of period-I. These subjects will be dosed if there are dropouts prior to dosing in period-I. If there are no dropouts, these subjects will be checked-out without being dosed after completion of dosing in period-I.

Drug-Product Test-Product: Nebivolol tablets 5 mg

Reference-product: Nebilet tablets 5 mg Manufactured by: BERLIN CHEMIE AG, Germany

Administration After an overnight fasting at clinical facility of at least 10 hours, each volunteer will receive a single dose of Nebivolol tablets 5 mg of either test or reference with 250 mL of drinking water. Each volunteer will be allowed to drink water as desire except 1 hour before and after drug administration. The formulation is given in a crossover fashion as per the randomization schedule. After the administration, the subject's oral cavity will be checked by using flashlight to confirm complete medication and fluid consumption by pharmacist.

Blood Schedule In each period, a total of 24 blood samples (approximately 7 mL each) will be collected pre-dose (0.000 hour) and at 0.167, 0.333, 0.500, 0.750, 1.000, 1.250, 1.500, 1.750, 2.000, 2.500, 3.000, 3.500, 4.000, 5.000, 6.000, 8.000, 10.000, 12.000, 24.000, 36.000, 48.000, 60.000 and 72.000 hours after study drug administration, respectively. The sample collection at 36.000, 48.000, 60.000 and 72.000 hours after dosing will be on ambulatory basis (i.e. on separate visit).

Sample Collection Blood samples will be collected through an indwelling catheter placed in a vein using disposable syringe or through fresh venipuncture with disposable syringes and needles. Approximately 7 mL blood sample will be withdrawn and transferred to sample collection pre-labeled tubes containing K3EDTA as anticoagulant at each sampling time point. After collection of blood samples from each subject at each time point, samples will be centrifuged at 4000 rpm for 5 minutes at 4±2°C. After centrifugation, the plasma samples will be aliquot into two pre-labeled cryovials for approximately 1 mL per each cryovial. Cryovials containing plasma sample will be stored at -70±10 °C.