28 - cephalosporins - 1st,2nd,3rd and 4th generations

1^st generation parenteral cephalosporins :

1. cephalothin
2. cefazoline

1^st generation oral cephalosporins

1. cephalexin
2. cephradine
3. cefadroxil

2^nd generation parenteral cephalosporins

1. cefuroxime
2. cefoxitin

2^nd generation oral cephalosporins

1. cefaclor
2. cefuroximeaxetil

3^rd generation parenteral cephalosporins

1. cefotaxime
2. cetizoxime
3. cefoperazone
4. ceftriaxone
5. ceftazidime

3^rd generation oral cephalosporins

1. cefixime
2. cefpodoximeproxetil
3. cefdinir
4. ceftibuten

4^th generation parenteral cephalosporins

1. cefepime
2. cefpirome