A delivery device for delivery of a medicament to a user, comprising: a tubular reservoir for containing a medicament; a body sized and shaped to receive at least a part of said reservoir; a spray nozzle arranged on one of said body and said reservoir, said nozzle providing a path for the medicament to be expelled from said reservoir; a pusher defining a longitudinal axis and being actuatable for causing the medicament to be expelled from said reservoir through said nozzle, said pusher being movable from a rest position to a fully activated position relative to said body in response to an actuating force; dose control means for ensuring that the medicament is delivered by said device, said dose control means comprising a track defined on said body and a track follower defined on said pusher, said track follower further comprising a peg (52, 52') defined on a flexible arm (28, 28') of said pusher, said track (35, 35') further comprising an interlock defining an interlock surface and a movement path and a stop, said interlock releasably receiving and retaining said track follower when said pusher is in said rest position, said pusher being retained in said rest position until a user applies said actuating force to said pusher thereby causing said track follower to engage said interlock surface, said interlock surface impeding movement of said track follower and maintaining said pusher in said rest position until said actuating force meets or exceeds a predetermined value, thereafter said flexible arm (28, 28') of said pusher being deflected in a direction transverse to said longitudinal axis of said pusher and said track follower overcoming said interlock surface and said track follower being movable along said track (35, 35'), said pusher being movable by a user from said rest position to said activated position to cause the medicament to be expelled from said reservoir through said nozzle, characterized in that said flexible arm (28, 28') bends as said track follower slides over said interlocking surface requiring an increasing actuating force until said track follower clears said interlocking surface, and the body comprises at least one pair of rails (31, 32, 33, 34) comprising first and second rails (31, 32, 33, 34) extending between said front part of said body and a rear part of said body and defining a longitudinal space therebetween, the flexible arm (28, 28') being arranged in said longitudinal space and said track (35, 35') being arranged on one of said first and second rails (31, 32, 33, 34). a tubular reservoir for containing a medicament; a body sized and shaped to receive at least a part of said reservoir; a spray nozzle arranged on one of said body and said reservoir, said nozzle providing a path for the medicament to be expelled from said reservoir; a pusher defining a longitudinal axis and being actuatable for causing the medicament to be expelled from said reservoir through said nozzle, said pusher being movable from a rest position to a fully activated position relative to said body in response to an actuating force; dose control means for ensuring that the medicament is delivered by said device, said dose control means comprising a track defined on said body and a track follower defined on said pusher, said track follower further comprising a peg (52, 52') defined on a flexible arm (28, 28') of said pusher, said track (35, 35') further comprising an interlock defining an interlock surface and a movement path and a stop, said interlock releasably receiving and retaining said track follower when said pusher is in said rest position, said pusher being retained in said rest position until a user applies said actuating force to said pusher thereby causing said track follower to engage said interlock surface, said interlock surface impeding movement of said track follower and maintaining said pusher in said rest position until said actuating force meets or exceeds a predetermined value, thereafter said flexible arm (28, 28') of said pusher being deflected in a direction transverse to said longitudinal axis of said pusher and said track follower overcoming said interlock surface and said track follower being movable along said track (35, 35'), said pusher being movable by a user from said rest position to said activated position to cause the medicament to be expelled from said reservoir through said nozzle, characterized in that said flexible arm (28, 28') bends as said track follower slides over said interlocking surface requiring an increasing actuating force until said track follower clears said interlocking surface, and the body comprises at least one pair of rails (31, 32, 33, 34) comprising first and second rails (31, 32, 33, 34) extending between said front part of said body and a rear part of said body and defining a longitudinal space therebetween, the flexible arm (28, 28') being arranged in said longitudinal space and said track (35, 35') being arranged on one of said first and second rails (31, 32, 33, 34).