PO
500mg PO q6-8h x 7-10 days
First Dose: 500mg PO x 1
IV
15mg/kg IV x1, then 7.5mg/kg IV q6h
First Dose: 15mg/kg IV x1
Max: 1 gram/dose
500mg PO q6-8h x 7-10 days
First Dose: 500mg PO x 1
15mg/kg IV x1, then 7.5mg/kg IV q6h
First Dose: 15mg/kg IV x1
500-750mg PO q8h x 5-10 days
15mg/kg IV x 1
Complete infusion 1h prior to surgery, then 7.5mg/kg IV q6h x 2
Max: 1 g/dose
750mg PO q8h x 5-10 days
500mg PO q12 x 14 days
See PID for full regimen
500mg PO q12 x 7 days
Alt: May use 250mg PO q8h x 7 days in pregnant patients
Prophylaxis (Sexual Assault)
2 g PO x 1
2 g PO x 1
Treatment
Immunocompetent: 2 g PO x 1
Immunocompromised: 500mg PO q12h x 7 days
Prophylaxis (Sexual Assault)
2 g PO x 1
Immunocompetent: 2 g PO x 1
Immunocompromised: 500mg PO q12h x 7 days
2 g PO x 1
250mg PO q8h x 5-7 days
Alt: 2 g PO q 24h x 3 days
Mild-mod
500mg PO q8h x 10-14 days
Severe
500mg IV q8h (give with vancomycin PO)
500mg PO q8h x 10-14 days
500mg IV q8h (give with vancomycin PO)
250-375mg PO q6h x 10-14 days (in combination)
2 g PO x 1 (with azithromycin)
500 mg  IV every 6 hours
Metronidazole
Tinidazole
Benznidazole
Meropenem
Vancomycin
Nitazoxanide
Gatifloxacin
Ciprofloxacin