Do you mean dosage amounts in general , or possible therapeutic doses?

I did some quick web searches and didn't find any general info like that, you might find what you are looking for in the library??.

Or if you are looking for specific supplements & dosages for symptoms or a condition - you might be able to narrow down your internet searches for the treatment of those.

this might be of general help- at the bottom is more links with info-
http://www.helpguide.org/life/supple...nal_herbal.htm