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Table 4 Comparison of the mean-derived pharmacokinetic parameters for ibuprofen and paracetamol after administration of the fixed-dose combination tablets, twice or three times daily for 3 days (Study 2; Day 4)

From: The pharmacokinetic profile of a novel fixed-dose combination tablet of ibuprofen and paracetamol

 

Ibuprofen

Paracetamol

 

Twice daily

Three times daily

Twice daily

Three times daily

n

26

26

26

26

t max , hrs

1.50a

1.50a

0.67a

0.67a

C max , μg.mL -1 (sd)

33.4 (6.12)

33.55 (7.32)

16.09 (5.14)

15.87 (5.26)

C min , μg,mL -1 (sd)

0.72 (0.42)

2.64 (1.24)

0.74 (0.25)

1.87 (0.79)

C av , μg.mL -1 (sd)

9.61 (1.96)

13.69 (2.73)

4.07 (1.05)

5.86 (1.68)

Fluctuation (sd)

3.44 (0.65)

2.26 (0.50)

3.83 (1.02)

2.47 (0.83)

(C max -C min )/C av

    

Swing (sd)

(C max -C min )/C min

62.47 (40.28)

14.90 (8.72)

22.81 (10.05)

8.73 (4.78)

AUC 0-t ,

μg.mL -1 .hr (sd)

230.73 (47.00)

328.60 (65.71)

97.67 (25.13)

140.80 (40.30)

AUC tau ,

μg.mL -1 .hr (sd)

118.12 (24.23)

114.26 (22.77)

51.72 (12.89)

50.74 (13.29)

  1. AUCtau: area under the plasma concentration-time curve for a dosing interval; AUC0-t: area under the curve calculated by linear trapezoidal rule to the last measurable plasma concentration; Cav: average plasma concentration; Cmax: maximum plasma concentration; Cmin: minimum plasma concentration; hr(s): hour(s); tmax: time of maximum plasma concentration; sd: standard deviation. aMedian values.