100mg 2x daily for complex partial siezures.. Initially thought...

100mg 2x daily for complex partial siezures.. Initially thought this was great after dealing with dilantin and feeling like a tired zombie. The only side effect I had was a chronic runny nose. I then started having low back pain, then nearly unbearable muscle spasms down the back of my legs. It was so bad I was setting alarms so I could take ibuprophen round the clock. I began having stomach issues from the ibuprophen, so I scaled back to only taking it in the am. Muscle spasms are now tolerable, but I've developed a new issue - I'm often dizzy and have random blurred vision. I waited 6 months to get my license back (after one minor siezure). Now I don't drive because of the side effects. I don't know whether cutting back the dose of lamictal would help, but I intend to ask.