I'd also be interested in information about breathing problems associated with Parkinson's. In my case it's not a matter of shortness of breath, but a feeling that the muscles needed to breathe are cramped, like a tight band around the lower ribs. This only happens when I'm sitting, standing or lying down, never during vigorous exercise. It usually happens about three hours after taking a Sinemet 100/25 pill, and is much worse, and lasts longer, if I take a Sinemet 200/50 CR. Frances Armstrong [log in to unmask]