Drug delivery device for injecting a dose of a medicament, comprising: a) at least one housing component (12, 14) housing a cartridge containing the medicament and housing a drive mechanism operably engaged with the cartridge for expelling a dose of the medicament, or comprising b) a first and a second housing component (12, 14) being inseparably connected with each other, wherein the second housing component is a cartridge holder equipped with a cartridge filled with the medicament and wherein the first housing component is a body component equipped with a drive mechanism operably engaged with the piston of the cartridge, - wherein at least one housing component (12, 14) comprises at least one disaggregating means (22, 24) integrally formed with the housing component (12, 14), by way of which the device can be divided and separated into various housing components such that reuse of the device is not possible, the disaggregating means (22, 24) comprise a perforated structure (22, 24), the disaggregating means further having at least one bendable and/or pivot-mounted lug adapted as a gripping means (i) for dividing the housing component (12, 14) into at least two separate pieces, or (ii) for at least partially dividing the housing component (12, 14) into at least two mutually interconnected pieces that can be pivoted with respect to each other - for gaining access to the cartridge disposed therein and to enable removal of the cartridge from the housing component (12, 14), wherein - the at least one housing component (12, 14) comprises a substantially cylindrical shape wherein the lug (22, 24) flushes with the outer circumference of the housing component (12, 14) and is covered with an adhesive cover or foil covering the disaggregating means (22, 24). a) at least one housing component (12, 14) housing a cartridge containing the medicament and housing a drive mechanism operably engaged with the cartridge for expelling a dose of the medicament, or comprising b) a first and a second housing component (12, 14) being inseparably connected with each other, wherein the second housing component is a cartridge holder equipped with a cartridge filled with the medicament and wherein the first housing component is a body component equipped with a drive mechanism operably engaged with the piston of the cartridge, - wherein at least one housing component (12, 14) comprises at least one disaggregating means (22, 24) integrally formed with the housing component (12, 14), by way of which the device can be divided and separated into various housing components such that reuse of the device is not possible, the disaggregating means (22, 24) comprise a perforated structure (22, 24), the disaggregating means further having at least one bendable and/or pivot-mounted lug adapted as a gripping means (i) for dividing the housing component (12, 14) into at least two separate pieces, or (ii) for at least partially dividing the housing component (12, 14) into at least two mutually interconnected pieces that can be pivoted with respect to each other - for gaining access to the cartridge disposed therein and to enable removal of the cartridge from the housing component (12, 14), wherein - the at least one housing component (12, 14) comprises a substantially cylindrical shape wherein the lug (22, 24) flushes with the outer circumference of the housing component (12, 14) and is covered with an adhesive cover or foil covering the disaggregating means (22, 24). - wherein at least one housing component (12, 14) comprises at least one disaggregating means (22, 24) integrally formed with the housing component (12, 14), by way of which the device can be divided and separated into various housing components such that reuse of the device is not possible, the disaggregating means (22, 24) comprise a perforated structure (22, 24), the disaggregating means further having at least one bendable and/or pivot-mounted lug adapted as a gripping means (i) for dividing the housing component (12, 14) into at least two separate pieces, or (ii) for at least partially dividing the housing component (12, 14) into at least two mutually interconnected pieces that can be pivoted with respect to each other (i) for dividing the housing component (12, 14) into at least two separate pieces, or (ii) for at least partially dividing the housing component (12, 14) into at least two mutually interconnected pieces that can be pivoted with respect to each other - for gaining access to the cartridge disposed therein and to enable removal of the cartridge from the housing component (12, 14), wherein - the at least one housing component (12, 14) comprises a substantially cylindrical shape wherein the lug (22, 24) flushes with the outer circumference of the housing component (12, 14) and is covered with an adhesive cover or foil covering the disaggregating means (22, 24).