seizures
"Nocturnal Grand Mal Seizures with Tremor for 35 years. I have been taking Vimpat for 3 years with limited success. At times I have had headaches, dizziness, vision problems, weight gain, tongue swelling to name a few. I was taking 300mg morning 300mg night along with 1200mg once daily of Aptiom (the new Tegritol with a twist)  No problems until 4 months ago. My knees started swelling and my joints started hurting like a severe pain I have never had. All the muscles in my legs started cramping at the same time. I went down to 150mg. of Vimpat twice daily and the swelling went down but not away. The pain is less but still there. The trouble has to be the Vimpat because I have been taking the Aptiom for only 2 months. Hope this is helpful."