Ken has been taking NADH for several years now and seems to be benefitting from it. We did have to cut down on his sinemet when he started it. We get it under the brand name Enada at our local health food store, but if you don't have a health food store that carries it, you can call 1-800-928-NADH to order it. There is alot if information about this on the internet at http://www.nadh.com/parknson/prknsTOC.htm. If this doesn't work ask your search engine to look it up on the internet for you. Good luck with NADH. I t has helped many people. Barbara Smith, CG/Ken/69/16