Contraception manner and that constituent

摘要

A method for preventing conception in mammals wherein a composition containing (1) free LHRH or its analog and (2) an immunogenic conjugate between LHRH or its analog and a carrier protein is administered to the mammals Free LHRH or its analog acts to prevent conception in the mammal during the period from administration to about 6 weeks; the immunogenic conjugate acts to prevent conception during the period from about 6 weeks after administration until the LHRH antibodies formed in response to the conjugate are metabolized, generally about 0.5-2 years.