Considering the different medication groups, vitamins (ATC classification system: A11) were used by half of the MS patients (50.0%), followed by immunosuppressants (L04—37.4%), analgesic medications (N02—27.3%), medications for acid-related disorders (A02—23.8%), immunostimulants (L03—23.3%), psychoanaleptics (N06—19.3%), corticosteroids (H02—19.0%), agents acting on the renin–angiotensin system (C09—17.6%), anti-inflammatory and antirheumatic drugs (M01—17.9%) and urological drugs (G04—16.0%). This evidence concerns the gene REN and myeloid sarcoma.