The disclosure is directed to a reminder label, specifically to a thermoplastic adjustable reminder label that is configured to indicate removal of content from a bottle to which the thermoplastic reminder label is coupled. The label has a flanged thermoplastic knob extending above a rectangular flange with a longitudinal axis and a transverse axis perpendicular to the longitudinal axis. A pair of resilient units is coupled to the flange along transverse sides and extends beyond the transverse sides. Each resilient member terminates in protrusions to engage parallel grooves etched internally in each of longitudinal parallel walls (101, 102) of a housing (130). A flap (110) is hingedly coupled to a housing base frame (140) to frictionally engage the housing and form a floor.