the effects of a new semisynthetic macrolide , roxithromycin , on drug metabolizing enzymes of rat liver were compared with two erythromycins , the base ( eb ) and the estolate ( ee ) , after 7 days ' treatment with high oral doses ( 400 and 800 mg/kg daily ) .
C0035891
roxithromycin
C0014806
erythromycins