I have been spending some time in the Compuserve Forum on Holistic Health and came across this message: "....There is some research that people with MS, Parrkinson's and Migraines may have an abnormal Melatonin cycle. Treatment is geared in reducing the melatonin in them..." I find it particularly interesting because I have both PD and Migraines. I know that some of you have been using Melatonin successfully to get a good night's sleep. Perhaps the Parkinson's medications lower the melatonin? (I take only Eldepryl and have never had a problem sleeping.) Can anyone out there shed some light on this? Thank you. I enjoy reading the messages every day.