This is a review off of amazon.... it explains the difference in the cinnamons. I couldn't find anything much about the ketosis part though...

CinSulin is NOT an ordinary cinnamon extract. It is a patented water-extract of Cinnamomum Cassia, also called Cinnamomum Aromaticum. It is the RESEARCHED species for glucose reduction. BEWARE OF PRODUCTS WHICH USE CINNAMOMUM VERUM, also called CINNAMOMUM ZEYLANICUM, as these are the WRONG species to use according to the most recent studies. For detailed info, I suggest you look at***cinsulin.com*** . It explains what makes this so unique.
Now for my experience with it. About four months ago I tested at 112 for my fasting blood glucose. I already take metformin. My specialist suggested taking CinSulin. He said he had seen patients see 10-20% reductions in their FBG. He said it was worth a try. So after four months, I was re-tested, and presented 105. I am going to continue taking it, and am hoping this further improves. But I am impressed so far, since four months is a relatively short period of time for glucose reduction, as anyone with elevated glucose knows. It is important to note that CinSulin® is extracted in a 10:1 ratio. So 500mg of CinSulin® is equal to 5,000mg of cinnamon bark, minus the potentially harmful fat-soluble compounds.