Adult

Intracranial injury (penetrating)

If foreign body is removed: Treat for up to 2 weeks (review iv daily).

If removal of foreign body is not feasible/possible: Discuss duration with Micro/ID, may need upto 6 weeks.

Preferred including penicillin allergy (non-severe)

 ceftriaxone  2g iv bd AND metronidazole 400mg po tds (or 500mg iv tds if NBM)

For MRSA positive patients: ADD linezolid 600mg po bd (iv if NBM) (See linezolid drug monograph for information about monitoring required)

If unable to have linezolid: substitute linezolid with vancomycin iv

Alternative

For penicillin allergy (severe)

moxifloxacin400mg po od (iv if NBM) AND metronidazole 400mg po tds (or 500mg iv tds if NBM)

Moxifloxacin may induce convulsions in patients with or without a history of convulsions – use with caution

For MRSA positive patients: ADD linezolid 600mg po bd (iv if NBM) (See linezolid drug monograph for information about monitoring required)

If unable to have linezolid: substitute linezolid with vancomycin iv

*Ensure that the patient is given the Fluoroquinolone MHRA patient information leaflet. Fluoroquinolones, including moxifloxacin, are associated with disabling and potentially long-lasting or irreversible side effects. See Fluoroquinolone antibiotics - severe adverse effects. 

Editorial Information

Last reviewed: 01 Jun 2025