According to one embodiment, an administration device for subcutaneous administration of a liquid drug over an extended period of time is provided. The administration device may include an administration unit, a housing, and a controller unit. The administration unit may include a drug reservoir and a pump unit. The housing may include the administration unit and may be adapted to be carried by a patient over an extend period of time. The controller unit may include a bolus administration profile controller. The bolus administration profile controller receives a bolus volume of a bolus to be administered and determines based, at least in part, on the bolus volume a bolus administration profile such that a depot volume of a depot is limited.