Amoxicillin Clavulanic acid 625mg (PO) 8 hourly for 5 days OR
Flucomox 500mg (PO) 8 hourly for 5 days OR
Ampiclox 500mg (PO) 8 hourly for 5 days
AND
Metronidazole 400 mg (PO) 8 hourly for 5 days.
Incision and drainage