Viridans streptococci
Peptostreptococcus
Prevotella
Porphyromonas
Fusobacterium
Penicillin V 8.5 to 16.5 mg/kg PO TID
PLUS (if spread beyond local tooth)
Metronidazole 10 mg/kg PO TID
If liquid needed: Metronidazole benzoate 16 mg/kg PO TID
OR
Amoxicillin-clavulanate 4:1 formulation 10 to 15 mg/kg (amoxicillin component) PO TID
Clindamycin 7 to 13 mg/kg PO TID
Avoid all beta-lactam antibiotics if severe delayed reaction to beta-lactams
Beta-lactams
Severe Delayed Reactions