An injection device (110) is provided that includes a housing (112) and a drive (121) that acts upon a syringe (122) when released by a trigger (114). The trigger (114) is rotatable from a rest position, in which it causes the drive (121) to be retained, to an active position, in which it no longer causes the drive (121) to be retained. A damping means (132) is arranged in conjunction with the trigger (114) to prevent accidental actuation of the device (110). Such an injection device (110) provides improved reliability and resilience to damage caused by impact forces, for example, when the device (110) is dropped onto a hard surface. The trigger (114) is also retained in its active position after actuation, indicating that the device (110) has been used. Additionally, the noise production by the operation of the trigger (114), which may be distressing to a user, is reduced.
