he bioavailability of clarithromycin capsule was studied in 12 normal male volunteers. A single oral dose of 500mg clarithromycin capsule or tablet was given according to a crossover design. Serum concentrations of clarithromycin were measured by bioassay. The concentration - time curves of both capsule and tablet fitted to a two - compartment open model. Peak serum levels of capsule and tablet reached 2.44 and 2.78μg/ml
at 2.29 and 2. 07h. respectively. The were 6.80 and 7.39h. The AUC were 23.68 and 24.05mg . h . L .
respectively. The relative bioavailability of capsule to tablet was 99.8±19.28%
and it demonstrated that both formation had bioequivalence.