The invention is directed to a stabilizer for an autoinjector (1400) including a housing (1440) including a distal surface and a side surface, the autoinjector also including a protective needle sleeve extending distally from the autoinjector, the stabilizer (1427) comprising: a connector (1441) for attaching to the side surface of the autoinjector； and a fastener (1442) configured to attach a base of said stabilizer to a skin of a patient, said connector (1441) configured to hold said housing (1440) of the autoinjector in a fixed spatial relation to said fastener (1442)； and a needle aperture in said base, said needle aperture being large enough for said sleeve to extend through said aperture.
