I've used it, Marilyn- and give mixed reviews
Add about a tsp to your bread recipes- unless you are using over 3c flour- then add more. It is supposed to assist the fermentation to make bread rise higher- and it also is supposed to promote a better crust.
I liked it in rye bread and it was okay in a whole grain bread I made but I do not like the flavor it imparted in the other breads I used it in. I used up my supply and will not order again.