A recent clinical trial found that interferonb-1a (INF) and glatiramer acetate (GA), two of the most commonly prescribed drugs for multiple sclerosis (MS), provide no additional clinical benefit when taken together. While findings published today in Annals of Neurology, suggest that taking both INF and GA together was not superior to GA monotherapy in reducing relapse risk; the combination therapy does appear to reduce new lesion activity and total lesion volume.

The National Institute of Neurological Disorders and Stroke (NINDS) describes MS as a neuroinflammatory disease, which affects the central nervous system by attacking myelin, a substance found in nerve fibers.