I found this information by renowned author, Andrea Nguyen, to be useful: http://www.vietworldkitchen.com/blog/...
""Use tip: Whichever substitute you choose, do a little math when using it. Look at the sodium content on the label:
Chinese Maggi Seasoning Sauce has 400 mg per teaspoon.
European Maggi Seasoning Sauce has 480 mg per teaspoon.
Bragg’s Liquid Aminos has 160 mg per 1/2 teaspoon.
Knorr Liquid Seasoning has 1230 mg per tablespoon."