Yes, this unfortunately is a known side affect. My neuro does blood work every three months, they (lymphocytes ) are dropping , I imagine I will need to switch too as I'm also pos for JC virus. I love this drug because of all of the positive impact it's had on my life......I hate this drug...because eventually, it may harm my body.....LOL! Classic MS saga!!

Hugs to you, hope your path is direct ( ie; not too ambiguous!;-) )

I recently was taken off Tecfidera as my lymphocytes went down to500. At that point I was down to half of the prescribed doses day. My neurologist did not want to risk it asi test positive for the JC virus.

Yes, mine did the same. Only take one dose a day. Back to mormal. Hope this helps

I have my appointment with dr next week...hope my blood work is better..much higher....hate to start another med right now...going on vacation next mt and hate to have new ill effects while there

Sorry, I also wanted to add that I had only been on the drug for six months and my liver also didn't like it. Hopefully your lymphocytes will increase and you can stay on the drug.