Flushing and stomach problems are the most common reactions, especially at the start of therapy, and may decrease over time.nausea, vomiting, diarrhea, stomach pain, or indigestion.The most common side effects of dimethyl fumarate include:.It is indicated for the treatment of relapsing forms of multiple sclerosis (MS), to include clinically isolated syndrome, relapsing-remitting disease, and active secondary progressive disease, in adults. Dimethyl Fumarate DR Caps 120mg, 240mg and 120mg/240mg Starter Pak is AB-rated generic therapeutic equivalent version of Biogen IDEC Inc.’s Tecfidera®.
