Test, Microser ® Reference, Serc ®
24 mg Betahistine 24 mg Betahistine
Cmax tmax t ½ ABCt ABC ∞ MRT Cmax tmax t ½ ABCt ABC∞ MRT
(ng/mL) (h) (h) ( ng*h/mL) (ng*h/mL) (h) (ng/mL) (h) (h) (ng*h/mL) (ng*h/mL) (h)
Mean 1716.2 0.9 3.7 7139.8 7660.2 4.6 1677.3 0.9 3.3 6714.4 6850.3 4.6
St Dev 307.5 0.3 3.1 2284.3 4636.9 1.3 252.6 0.3 1.3 1413.2 1622.8 1.1
St Error 54.4 0.0 0.6 403.8 819.7 0.2 44.7 0.1 0.2 249.8 286.9 0.2
CV 17.9 30.6 84.3 32.0 60.5 28.6 15.1 38.3 38.1 21.0 23.7 24.2
Median 1772.8 0.8 3.3 6971.8 7081.4 4.5 1742.5 0.8 3.3 6363.6 6427.7 4.5
MRT= Mean residence time; St Dev = Standard deviation; St Error = Standard error; CV = Coefficient of variation expressed as percent
Table 1: Values of pharmacokinetic parameters of betahistine in two oral formulations.
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