Originally Posted by Muireann

But why not take a product that contains all the necessary constituents to make l-dopa in one place, rather than searching around for the individual components?

At one point it was thought that I might have hemachromatosis as well as PD which necessitated avoiding dietary iron. I tried to make up my intake of all the other constituents of L-dopa and it proved very difficult to get the right levels, not too little of one thing or too much of another, especially without taking a lot of individual pills.

The constituents are such common ones that it seems like it would be an easy task, but it is not, even with the WWW as an open market place for the purchase of almost anything.