What I meant was , one will reach a maximum dosage and beyond it, medicine will not be beneficial anymore. (Sorry, sometimes I may not express my thoughts very clearly since English is not my first language - but I am trying) I guess you put my thoughts appropriately with the phrase "topping it out".

During my consultation with the neuro last Friday, he told me that further tests will not be necessary, unless there is significant development (he avoided using the word "progression") in my condition that will warrant further investigation.

I am so eager to take as much as supplements as possible to at least arrest the nerve damage as early as possible. I would be happy if - at least - my symtoms will not progress - BUT, if it improves, I would be the happiest and grateful person in the world!!! For now, I am grateful that I find this forum and to all the wonderful and caring people.