I read some interesting information about parkinsons in the book Detoxify or Die, by Sherry Rogers. She recommends checking out a website from Dr David Perlmutter
www.brainrecovery.com
She said in the book that one injection of Glutathione can improve parkinsons symptoms in minutes. However another injection is needed in 2-3 days. But it may be worth looking into. I didn't check out the site myself, but it sounds like Perlmutter has had a lot of success.
chigirl