Restrictions: Subjects will remain in upright position [sitting or ambulatory] for two hours after dosing in each period except when clinically indicated to change the posture. The subjects will fast for at least 10 h prior to dosing and 4 h post-dose. Water will be permitted ad libitum except for 1 h before and until 1 h after post dose. During 1 hr post dose water restriction a, 60 mL of 20% glucose solution will be administered every 15 min to the study subjects.