Agent	Dosage*		Cost per course† (generic)	Common adverse reactions‡
Cephalosporins				Mild diarrhea, rash
Cefotaxime (Claforan)	1 g IV every six to eight hours		$355 (330)
Cefpodoxime (Vantin)	200 mg orally twice per day		124 (110)
Cefprozil (Cefzil)	500 mg orally twice per day		192
Ceftriaxone (Rocephin)	1 g IV every 24 hours		392
Cefuroxime (Ceftin)	500 mg orally twice per day		219 oral
	0.75 to 1.5 g IV every eight hours		250 to 358 IV
Clindamycins				Mild diarrhea,abdominal pain, pseudomembranous colitis, rash
Clindamycin (Cleocin)	300 mg orally every six hours		238 (148 to 168) oral
	600 mg IV every eight hours		250 IV
Fluoroquinolones				Mild diarrhea, nausea, vomiting, constipation, dizziness, headache
Gatifloxacin (Tequin)	400 mg orally or IV once per day		98 oral, 382 IV
Levofloxacin (Levaquin)	500 mg orally or IV once per day		56 oral, 438 IV
Moxifloxacin (Avelox)	400 mg orally once per day		107
Macrolides				Mild diarrhea, nausea,vomiting,abdominal pain,rash
Azithromycin (Zithromax)	500 mg orally for one dose, then 250 mg once per day for four doses		49 to 60 oral
	500 mg IV every 24 hours		295 IV
Clarithromycin (Biaxin)	500 mg orally twice per day		96
Erythromycin	500 mg orally every six hours		17 (8 to 10) oral
	500 to 1,000 mg IV every six hours		(167) IV
Penicillins				Mild diarrhea, nausea,vomiting,rash
Amoxicillin	500 mg orally every eight hours		4 (4 to 8)
	875 mg orally every 12 hours		20 (18 to 19)
Amoxicillin/clavulanate(Augmentin)	875 mg/125mg orally every 12 hours		166 (110 to 115)
Penicillin G	1 to 3 mU IV every four hours		(273)
Penicillin V	500 mg orally four times per day		15 (9 to 15)
Tetracyclines				Mild diarrhea, nausea, vomiting, phototoxicity
Doxycycline (Vibramycin)	100 mg orally twice per day		102 (16 to 21)