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. 2010 Jul 5;10:10. doi: 10.1186/1472-6904-10-10

Table 2.

Mean derived pharmacokinetic profiles for ibuprofen and paracetamol after administration of the fixed-dose combination tables in the fed and fasted states (Study 1)

Ibuprofen Paracetamol
Fed Fasted Fed Fasted
n 25 25 25 25

tmax, hrs 2.00a 1.25a 1.50a 0.50a

Median difference [minutes] fed vs fasted, 95% CI 25.0, 0.0-45.0 55.0, 30.0-80.0

t1/2, hrs 2.25 1.95 2.73 2.83

Cmax, μg.mL-1 24.74 32.04 11.14 18.48

LS geometric mean 24.03 31.46 10.71 17.58

Ratio fed/fasted (%), 90% CI 76.38, 70.25-83.06 60.92, 53.43-69.46

AUC0-t, μg.mL-1.hr 103.91 118.32 46.45 51.69

LS geometric mean 101.6 2 116.51 45.69 50.27

Ratio fed/fasted (%), 90% CI 87.22, 84.06-90.49 90.89, 87.38-94.54

AUC0-inf, μg.mL-1.hr 109.03 120.92 49.51 54.49

LS geometric mean 106.04 118.82 48.72 52.95

Ratio fed/fasted (%), 90% CI 89.25, 86.14-92.46 92.01, 88.45-95.71

Kel 0.328 0.361 0.258 0.251

AUC0-inf: area under the curve calculated by linear trapezoidal rule to the last measurable plasma concentration (Cp) with additional area calculated from Cp/Kel; AUC0-t: area under the curve calculated by linear trapexoidal rule to the last measurable plasma concentration; Cmax: maximum plasma concentration; Kel: elimination rate constant; tmax: time of maximum plasma concentration; hr(s): hour(s); LS: least square; sd: standard deviation. aMedian values.