 Multiple myeloma is still a persistent and life-threatening blood cancer that is characterised by tumour proliferation and suppression of the immune system. It is a rare but incurable disease. On average, multiple myeloma is diagnosed in people 65-74 years of age, and the majority of newly diagnosed patients may not be eligible for more aggressive treatment options such as high-dose chemotherapy with stem cell transplant. In February 2015 REVLIMID lenalidomide was approved in combination with dexamethasone for the treatment of adult patients with previously untreated multiple myeloma who are not eligible for transplant. Looking in more detail at the combination of lenalidomide and dexamethasone, the role and especially the most adequate and effective dosage of dexamethasone in long term use with lenalidomide is not clearly defined or well characterised It is therefore of great relevance to gain insights into the clinical practice and the routine of dexamethasone management and dosing in long term use with Revlimid. 