the role of furosemide in the development of hyponatremia seems ambiguous. The data coming from a large retrospective population-based case-control study, focused on hospitalization due to hyponatremia, support furosemide as a hyponatremia-preventing agent [1]. However, since furosemide action increases sodium excretion, there is also concern about its contribution to the development of hyponatremia in certain demographics; for example, in geriatric patients with SIADH [2] or in patients admitted for osteoporotic fractures [3].