Hi Rich. In answer to your questions, there is a real danger of hallucinations and memory problems associated with Sinement, or so it seems. We experienced this with my mother, and the decrease in Sinement seemed to resolve the problem of visual hallucinations. The memory thing, and other mental confusion has persisted, however. She has been treated with other psychoactive druge, but this is a VERY delicate balancing act, which can easily go "over the edge" in other directions. For instance, my mother experienced severe instability in walking (staggering) while on some other medications. She is now on minimal dosage of Sinemet, eldepryl and something for her arthritis, and is much more lucid. I hope you have a local Parkinson's Support Group in your area. We don't have one real near us, and we haven't been able to attend the meetings of the closest one. But, I understand they are of great value to the patient and the caregivers/family. Best wishes to you. Lynn Lowe