BY DEEP INTRAMUSCULAR INJECTION OR INTRAVENOUS INJECTION OR INFUSION, 1 G EVERY 8 HOURS OR 2 G EVERY 12 HOURS; 2 G EVERY 8 - 12 HOURS OR 3 G EVERY 12 HOURS IN SEVERE INFECTIONS; SINGLE DOSES OVER 1 G INTRAVENOUS ROUTE ONLY; ELDERLY USUAL MAX. 3 G DAILY; CHILD, UP TO 2 MONTHS 25 - 60 MG/KG DAILY IN 2 DIVIDED DOSES, OVER 2 MONTHS 30 - 100 MG/KG DAILY IN 2 - 3 DIVIDED DOSES; UP TO 150 MG/KG DAILY (MAX. 6 G DAILY) IN 3 DIVIDED DOSES IF IMMUNOCOMPROMISED OR MENINGITIS; INTRAVENOUS ROUTE RECOMMENDED FOR CHILDREN
URINARY-TRACT AND LESS SERIOUS INFECTIONS, 0.5 - 1 G EVERY 12 HOURS
PSEUDOMONAL LUNG INFECTION IN CYSTIC FIBROSIS, ADULT 100 - 150 MG/KG DAILY IN 3 DIVIDED DOSES; CHILD UP TO 150 MG/KG DAILY (MAX. 6 G DAILY) IN 3 DIVIDED DOSES; INTRAVENOUS ROUTE RECOMMENDED FOR CHILDREN
SURGICAL PROPHYLAXIS, PROSTATIC SURGERY, 1 G AT INDUCTION OF ANAESTHESIA REPEATED IF NECESSARY WHEN CATHETER REMOVED