in a randomized crossover study , the pharmacokinetics of three new cephalosporin antibiotics , cefaclor , cefadroxil , and cgp 9000 , in comparison to cephalexin , were determined after oral administration , by capsules , of 1,000 mg on an empty stomach in 12 normal subjects .
C0007538
cefadroxil
C0007716
cephalexin