The human rabies immunoglobulin for intramuscular use (HRIG) prepared by our company through cold ethanol fractionation and low pH viral inactivation has the following characteristics: l The potency of anti-rabies antibodies can effectively maintain at not less than 100 IU/ml during the shelf life; l The product available in liquid preparation is easy to use; l The content of polymers and dimers is not less than 90%; l The potency of anti-HBs in the final product is not less than 6.0 IU/g protein, and the final product contains a wide spectrum of antibodies; l Safe, efficacious, and seldom cause allergic reactions.