Adults: Serious Infection: 150 mg every 6 hours or as prescribed by the physician. More Severe Infection: 300 mg every 8 hours.
Children: Serious Infection: 15 mg/kg body weight/day or as prescribed by the physician. Severe Infection: 20 mg/kg body weight in 3-4 divided doses.
In children, regardless of body weight, the maximum recommended dose is 300 mg (base) daily for severe infections.