[How to manage hypomagnesemia?].

Magnesium is essential to many enzymatic processes, using it in the form of adenosine or guanosine triphosphate (ATP/GTP)-Mg. Hypomagnesemia should be screened for more frequently. It can be due to multiple causes that need to be diagnosed. In this review, we provide a "practical" view of the management of hypomagnesemia: (patho)physiological concepts, clinical and biological manifestations, causes, diagnostic approach, and treatments.