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)

moxifloxacin* 400mg 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