A device for delivering a flowable ingestible medicament into the gastrointestinal tract of a user, the device comprising: a housing including a first housing portion and a second housing portion, said second housing portion having a portal formed therein; a vibrating agitation mechanism disposed within said housing and adapted such that, in a vibration mode of operation, said housing exerts vibrations on an environment surrounding the device; a power supply disposed within said housing and adapted to power said vibrating agitation mechanism; and a control element adapted to activate said vibrating agitation mechanism to be operative in said vibration mode of operation; a flexible and collapsible medicament reservoir dimensioned to contain the flowable ingestible medicament; a reservoir biasing mechanism adapted to apply pressure to said flexible and collapsible medicament reservoir; a conduit extending from said medicament reservoir to said portal, and sealing said portal; characterized in that it comprises a valve including a weight and a valve biasing mechanism adapted, in a closed operative orientation, to bias said weight against said conduit so as to block flow through said conduit, and in an open operative orientation to remove the weight from said conduit so as to allow fluid to flow through said conduit, wherein said valve is functionally associated with at least one of said housing and said vibrating agitation mechanism, such that when said vibrating agitation mechanism is in said vibration mode of operation, at least some of said vibrations exerted by said vibrating agitation mechanism or by said housing are applied to said valve biasing mechanism and periodically transition said valve between said closed operative orientation and said open operative orientation. a housing including a first housing portion and a second housing portion, said second housing portion having a portal formed therein; a vibrating agitation mechanism disposed within said housing and adapted such that, in a vibration mode of operation, said housing exerts vibrations on an environment surrounding the device; a power supply disposed within said housing and adapted to power said vibrating agitation mechanism; and a control element adapted to activate said vibrating agitation mechanism to be operative in said vibration mode of operation; a flexible and collapsible medicament reservoir dimensioned to contain the flowable ingestible medicament; a reservoir biasing mechanism adapted to apply pressure to said flexible and collapsible medicament reservoir; a conduit extending from said medicament reservoir to said portal, and sealing said portal; characterized in that it comprises a valve including a weight and a valve biasing mechanism adapted, in a closed operative orientation, to bias said weight against said conduit so as to block flow through said conduit, and in an open operative orientation to remove the weight from said conduit so as to allow fluid to flow through said conduit, wherein said valve is functionally associated with at least one of said housing and said vibrating agitation mechanism, such that when said vibrating agitation mechanism is in said vibration mode of operation, at least some of said vibrations exerted by said vibrating agitation mechanism or by said housing are applied to said valve biasing mechanism and periodically transition said valve between said closed operative orientation and said open operative orientation.