question: I started out taking 25mg of trokendi xr for migraines. After a while it was increased to 50 mg. About this same time, I received lab results back that showed a defiency in vitamin D. I began taking 10000 mg of vitamin D3 per day. The migraines stopped...I haven t had another one since then. After that the trokendi was increased to 75 mg. I woke up to bad low back pain that lasted for weeks. I didn t realize that it could be a side effect of the trokendi. About 2 weeks later the doc increased trokendi to 100 mg. I started having tremendously severe knee pain in both knees. It hurts to walk, stand, sit down, or get up. My knees feel swollen. When I realized this was a side effect, I stopped taking the trokendi. It s been almost a week, and the swelling went down and the pain decreased. However it didn t go away. As the week has gone on, the swelling in my knees has come back and the pain is getting really bad again. Could this be permanent damage caused by the trokendi? Not sure what I should do.