Ken, I haven't had a problem with cramping in the arm, but have experienced my right foot cramping & curling up. It does make walking very difficult. Earlier on, a combination of Eldepryl, Amantadine, & Parlodel gave moderate help with the foot cramping. But since I've added Sinemet 50/200CR twice/day (about 5:30am & 2:00pm), the problem has gone away. I've been doing alot of walking recently, up to about 3 miles at a time, and haven't had anymore problems with the foot cramping. I also experienced the foot cramping while swimming, which along with the gradual loss of the ability to coordinate kicking with arm movement, made swimming impossible. Since I've added Sinemet, I'm back to swimming 1/2 mile, 3 times/week. I would suggest that you talk to your MD about a change in your Sinemet schedule, possibly adding Eldepryl. I know the experience with Sinemet varies widely on this list. But I've had good experience with Sinemet CR. I also strongly suggest some sort of regular physical exercise, even if you start out with a very short session. I have made exercise a daily requirement and I believe that exercise enables a person's body to more efficiently utilize medication. I recommend walking, swimming/water exercise, T'ai Chi and other slow stretching exercises. When practicing T'ai Chi, it actually is a feeling of pleasure to feel muscles tightened by Parkinson's gradually loosen up. Charley Countryman (46/6) [log in to unmask]