A method for dispensing discrete medicaments with a dispensing device includes the steps of predicting a depletion time in the future when the medicaments in the container of a first feeder unit of the plurality of feeder units will be depleted or are past their expiry date; providing a notification ahead of said depletion time that a second feeder unit holding medicaments with the same composition as the first feeder unit needs to be presented to the dispensing device, together with a due time for presenting said second feeder unit to the dispensing device; and continuing the dispensing of the medicaments from the first feeder unit at least until the due time.