I read your question in the Parkinson discussion list. My Mother has had Parkinson's for several years. During the fall this past year the same thing was happening to her. I tried to get her to talk with her doctor about it. The process took some time and there isn't anything definitive to even tell you about. They took the approach of reviewing the medications she was getting and tried to make some changes to see if it would help. I thought (from things I had read) that she may have been getting too much Sinemet. She was adamantly opposed to their lowering it so they tried giving her a blood thinner. I thought the experiment wouldn't show that improved anything. I had noticed she would have periods (especially in the morning) when she would feel dizzy. The blood thinner did not seem to help with that. ( I should maybe add that she had a minor stroke about two years ago.) But for some reason she doesn't seem to fall asleep when I am talking to her like I had notice happen last fall. It may just have been a fine tuning of her medications that helped. She has recently started (at her doctors suggestion!) taking Co- Enzyme Q10 and Gingko Biloba. Too soon to tell but supposedly the CoQ10 is supposed to help with amount of energy and the other one with mental alertness. Larry Glenn [log in to unmask] -- Registered ICC User check out http://www.usefulware.com/icc.html