The invention relates to a device that assists in supplying drops of a liquid contained in a sprayer (1), comprising a mobile portion (5) forming a mechanical pump and provided with an outlet end piece (7). The device is characterized in that it includes: a first portion (10) arranged to receive the bottom of the sprayer (2)； and a second portion (20) that can co-operate with the mobile portion (5), exposing said outlet end piece (7). Each portion (10, 20) includes a side bearing fin (13, 25) and the two fins are substantially opposite each other so as to allow the mobile portion (5) to move when a force is exerted between said two fins (13, 25).
