I stopped Tecfidera after being on it for 40 days. I still feel awful! I feel Tecfidera put be into the worst relapse I have ever had in the 13yrs of having MS. It has been 3 weeks since I was taken off it. I still have bone pain , headaches, trouble walking, fatigue, tingling numbness in my hands feet , pain my arms, change in vision.....I did not have these symtoms before taking Tecfidera I wish I would not of stayed on it trying to hang in there like it is recommend ...maybe I would not feel so bad if I stop it earlier . Quality of life matters more !