Adults, elderly patients, and children 12 years and older, weighing 50 kg or more: 1 to 2 g once a day, depending on the severity and type of infection. In case of a severe infection, a higher dose (up to 4 g once a day) will be given. If the daily dose is more than 2 g, it can be received in a single dose, once a day or in two separate doses
Newborns, infants, and children aged 15 days to 12 years weighing less than 50 kg: 50 to 80 mg of ceftriaxone per kg of the child's body weight, once a day, depending on the severity and type of infection. If severe infection, give a higher dose, up to 100 mg per kg of body weight, up to 4 g at most once a day.