Dimethyl fumarate is a medication primarily used to treat multiple sclerosis, a condition that affects the central nervous system. It works by modulating the immune system and reducing inflammation, which can help prevent the progression of the disease and decrease the frequency of relapses. This compound is taken orally and is known for its potential side effects, including gastrointestinal issues and flushing. It is important for patients to discuss these effects with their healthcare provider to ensure proper management and monitoring during treatment.