Single and Multiple Dose Pharmacokinetics of Sufentanil NanoTab

Cmax

For Treatment A, serial blood samples were taken at 0 (predose), 5, 10, 15, 20, 30, 40, 50, 60, 70, 80, 90, 120, 180, 240, 360, 480, 600, 720, 800, and 840 minutes, and 24 hours after the Sufentanil NanoTab dose on Day 1. For Treatment B, serial blood samples were collected at 0, 20, 120, 240, 360, 480, 600, 720, 760, 780, 785, 790, 795, 800, 810, 820, 830, 840, 850, 860, 870, 900, 960, 1020, 1140, 1260, 1380, 1500, 1580, and 1620 minutes, and 37 hours after the first Sufentanil NanoTab dose on Day 3

Time frame: 24 hours in Treatment A, 37 hours in Treatment B

Time to Steady State

Steady state, for the cohort, was assessed using Helmert's method (ratio of the geometric mean concentration of each time point to the geometric mean concentrations pooled over all remaining time points, and achieved at the first not-statistically significant time point (i.e., p \>0.05)

Time frame: 24 hours

CST½

the time for plasma concentrations to decrease from Cmax to 50% of Cmax after discontinuation of drug administration

Time frame: 24