Has anyone had experience with or have information on melatonin? In reading a book, the doctor comments that they understand that melatonin inhibits dopamine production, even though his mother-in-law has been symptom-free for 10 years(taking melatonin). The few times I have tried (even 1/2 mg) it seems to slow movement even more and also time to get going in the morning. Appreciate any info. Thanks, Bill Hipp