0 YEARS OLD AND ABOVE
– Prevention of hepatitis B in case of accidental exposure in non-immunised subjects (including persons whose vaccination is incomplete or status unknown): 12 IU/kg body weight, at least 500 IU, depending in the intensity of exposure, as soon as possible after exposure, and preferably within 72 hours.
– Immunoprophylaxis of hepatitis B in haemodialysed patients: 8 to 12 IU/kg body weight (maximal 500 IU), every 2 months until seroconversion following vaccination.
– Prevention of hepatitis B in the newborn, of hepatitis B virus carrier-mother, at birth or as soon as possible after birth: 30 to 100 IU/kg body weight (normally 1 ml). The hepatitis B immunoglobulin administration may need to be repeated until seroconversion following vaccination.
In all these situations, vaccination against hepatitis B virus is highly recommended. The first vaccine dose can be injected the same day as human hepatitis B immunoglobulin, however in different sites.
In subjects who did not show an immune response (no measurable hepatitis B antibodies) after vaccination, and for whom continuous prevention is necessary, administration of 500 IU to Adults and 8 IU/kg body weight to children every 2 months can be considered; a minimum protective antibody titre is considered to be 10 mIU/ml.