Primidone
"I started out with Primidone at 50mg at night, but I couldn't shake off the side effects until about 9 am the next morning. Tired, disoriented, lethargic and dizzy. Couldn't take it during the day when I needed it the most, so it was basically useless for me. Dr. changed this to Topiramate which works much better. No apparent side effects and I worked up from 50mg a day to 150 mg in the morning, with another 50 in the mid afternoon to keep the calmness going. I have to write a lot in my job and although it takes about 2 hours to achieve full effect, the Primidone keeps the shakes away for a good 5 hours."