I googled it and found this site:
http://ampyra.com/home/?ssva_vid=f64...arch/index.php
"The most common side effects of AMPYRA include: urinary tract infection; trouble sleeping (insomnia); dizziness; headache; nausea; weakness; back pain; problems with balance; multiple sclerosis relapse; burning, tingling or itching of your skin; irritation in your nose and throat; constipation; indigestion; pain in your throat."
WHY does everything have to have so many side effects??

Some of the ones listed
I already have with MS!!