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. 2023 Nov 17;14:1204075. doi: 10.3389/fphar.2023.1204075

TABLE 5.

Point estimates and 90% CIs for assessment of bioequivalence between T and R2 or R1 and R2 in the intravenous administration study (pivotal study 1).

Parameters T vs. R2 R1 vs. R2
(T/R2)% 90% CI (%) (R1/R2)% 90% CI (%)
Free phenytoin
Cmax (ng/mL) 51.57 44.38–59.92 48.26 41.53–56.08
AUC0-t (ng·h/mL) 94.08 81.39–108.74 91.79 79.58–105.89
AUC0-4 (ng·h/mL) 92.40 85.43–99.94 87.36 80.76–94.48
AUC0-∞(ng·h/mL) 94.30 81.59–108.99 92.65 80.33–106.86
Total phenytoin
Cmax (ng/mL) 46.51 40.28–53.70 44.17 38.25–51.00
AUC0-t (ng·h/mL) 95.47 83.56–109.08 94.25 82.64–107.48
AUC0-4 (ng·h/mL) 88.68 82.18–95.70 86.49 80.15–93.33
AUC0-∞(ng·h/mL) 94.80 82.53–108.90 93.39 81.46–107.07

Cmax, maximum observed concentration; AUC0-t, area under the curve from 0 to last time of quantifiable concentration; AUC0-4, area under the curve from 0 to 4 h; and AUC0-∞, area under the curve from the 0 to infinity time.