The invention relates to a device (3) for notifying drug-taking moments, comprising: • an internal memory for storing the drug-taking (31) and acknowledgment (34) timing calendars; • Audible (32) and visual (33) notification means notifying the patient (1) to take his medication when a time of medication expires (40); An acknowledgment button (30) enabling the patient to notify his medication intake (42); The invention also relates to a method for measuring and monitoring the compliance rate of a patient (1) implementing the device (3) and comprising the steps of: • constituting and introducing a calendar of times of taking medicaments (31) in the internal memory of the device (3) via communication means; • Activate (41) audible (32) and visual (33) notification means and allow the user (1) to notify his medication intake (42) when a set time has expired (40); • Record the patient's (60) declarative data (60), treat them (61) to calculate an adherence rate and make them accessible (63) to the people involved in taking the patient's medication (1). L'invention concerne un dispositif (3) de notification de moments de prise de médicaments comprenant : • Une mémoire interne permettant de stocker les calendriers de moment de prise de médicaments (31) et d'acquittement (34) ; • Des moyens de notification sonores (32) et visuels (33) notifiant au patient (1) de prendre ses médicaments lorsqu'un moment de prise de médicaments arrive à échéance (40) ; • Un bouton d'acquittement (30) permettant au patient de notifier sa prise de médicaments (42) ; L'invention concerne également un procédé de mesure et de suivi du taux d'observance d'un patient (1) mettant en œuvre le dispositif (3) et comprenant les étapes consistant à : • Constituer et introduire un calendrier de moments de prise de médicaments (31) dans la mémoire interne du dispositif (3) via des moyens de communication ; • Activer (41) des moyens de notificati