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Table 2 Levonorgestrel Single- and Multiple-dose Pharmacokinetics: Comparison of Mean Pharmacokinetic Parameters Across Treatments

From: Effect of exenatide on the pharmacokinetics of a combination oral contraceptive in healthy women: an open-label, randomised, crossover trial

  

Single Dose

Multiple Dose

  

LS Geometric Mean

Comparison to OC alone: Ratio (90% CI)

LS Geometric Mean

Comparison to OC alone: Ratio (90% CI)

AUC (pg·h/mL)

OC alone

55698.79

-

72974.62

-

 

1 h before exenatide

53530.64

0.96 (0.90, 1.03)

72952.67

1.00 (0.92, 1.09)

 

0.5 h after exenatide

60591.89

1.09 (1.01, 1.17)

76344.29

1.05 (0.96, 1.14)

C max (pg/mL)

OC alone

3882.56

-

6598.95

-

 

1 h before exenatide

4061.86

1.05 (0.94, 1.16)

6657.22

1.01 (0.92, 1.10)

 

0.5 h after exenatide

2284.25

0.59 (0.53, 0.65)

4800.68

0.73 (0.67, 0.79)

24-h concentration (pg/mL)

OC alone

600.88

-

2136.51

-

 

1 h before exenatide

571.47

0.95 (0.89, 1.02)

2173.05

1.02 (0.93, 1.11)

 

0.5 h after exenatide

691.10

1.15 (1.07, 1.23)

2367.68

1.11 (1.01, 1.21)

T max median (range) (h)

OC alone

-

1.00 (0.50-2.07)

-

-

 

1 h before exenatide

-

0.92 (0.50-1.50)

-

-

 

0.5 h after exenatide

-

4.75 (3.00-6.02)

-

-

t 1/2 geometric mean (range) (h)

OC alone

-

33.6 (20.0-78.5)

-

-

 

1 h before exenatide

-

32.1 (19.8-55.7)

-

-

 

0.5 h after exenatide

-

32.6 (17.9-72.4)

-

-