A transfer system suitable for medicaments comprising a vial socket, a housing having first and second open ends with the first open end being releasably connected to the vial socket, a needle hub mounted within the housing, a needle having first and second piercing ends mounted in the needle hub, a vial having a neck and a body, the vial being inserted in the vial socket and being non removably retained therein, a cartridge having a plunger sealing an open end thereof and a septum located at an opposite end of the cartridge, and an activation cap for causing the needle to penetrate a septum of the vial and the septum of the cartridge to permit transfer of components therebetween.
