Human Hepatitis B Immunoglobulin should be administered via the intramuscular route. The usual recommended site for adults is the deltoid; for infants the lateral aspect of the thigh is preferable. If a large volume (>2 mL for children or >5 mL for adults) is required, it is recommended to administer this in divided doses at different sites.
When simultaneous vaccination is necessary, the immunoglobulin and the vaccine should be administered at two different sites.
If intramuscular administration is contraindicated (bleeding disorders), the injection can be administered subcutaneously if no intravenous product is available. However, it should be noted that there are no clinical efficacy data to support administration by the subcutaneous route.