Medicines not used after treatment have to be brought back, with their packaging, to any pharmacy (not necessarily the one where they were delivered), for disposal by the Cyclamed chain . It is not recommended to store unused medicines because taking them without medical advice can be dangerous for health: medication inappropriate for the pathology, incompatibility with another treatment. You may refuse the generic drug that the pharmacist offers you to replace the medicine prescribed by the physician. However, your refusal may have consequences on how you will be reimbursed by the Health Insurance.