Adult & childn >12 yr 1 g 12 hrly.
Serious infection Max: 12 g/day. For doses >4 g/day, give in 2 divided doses 12 hrly.
Gonorrhoea 1 g/day IM as a single dose.
Uncomplicated infection 2 g/day IM or IV, 1 g 12 hrly.
Moderate to severe infection 3-6 g/day IM or IV, 1-2 g 8 hrly.
Life-threatening infection Up to 12 g/day IV, 2 g 4 hrly.
For infection requiring higher dose 6-8 g/day IV, 2 g 6-8 hrly.
Pre- & post-op 1-2 g 30-60 min prior to surgery.