Objectives: Digitally sharing information enables improved communication, consequently increasing accuracy of a medication overview, resulting in reduced medication errors [1]. The aim of this study is to evaluate implementation of an electronic medication overview, particularly its accessibility and usability. Methods: In Belgium a project called “Vitalink” was implemented. Main objective of this project was to improve the exchange of health information between healthcare professionals as well as towards patients. Software packages generating an electronic medication overview out of patients’ health records, were developed. The generated medication overview listed all prescribed medication with name, dose, frequency, way of administration and moment of intake. Because data is transferred over the Internet, a lot of thought went into secured data transfer and authorized access. Security is guaranteed by: encoding health information as well as encrypting the encryption key; two separate decoding keys; registration of all actions performed on the data. Access is granted only to those healthcare professionals selected by the patient through an informed consent. To check authorization healthcare professionals’ and patients’ identities are verified by reading their e-ID using an e-ID reader. This e-ID reader is linked to one’s computer, connected to the Internet. When authorization is approved, there are still restrictions as to the actions that can be performed on the data, depending on the type of healthcare professional who’s accessing the medication overview. General practitioners and pharmacists can consult and change the medication overview whereas nurses, home care staff and secondary caregivers can only consult it. The patient as well can only consult the electronic medication overview. Expectations of general practitioners, pharmacists, nurses, home care staff and secondary care professionals of four regions in Belgium were documented using an online survey at the start of the project. Complementary findings ...