Paula,
The answer to your questions, which were mine too - oh so obvious. Just read carefully and follow down the pages.
What is in levodopa? Scroll down and keep reading
http://www.made-in-china.com/product...s/Levodopa.htm
Where is it mainly produced?
http://www.chemicalbook.com/Chemical..._CB2402938.htm
Go figure
There is more, but let's talk.
Lindy