Hi Beth, I am taking DLPA (DL-Phenylalanine) a free form amino acit 500mg, Twinlab. I take it to relieve chronic pain in my hands and feet. It helps. I can do more, be more active when I take it. I also notice when I do not take it. (I am the non-Parkie), but sometimes sneak this into Paul's heap of pills since he has considerable pain in the buttocks area when he walks. I really can't say if it helps him much. This is available in health food stores. Jan cg