I am not sure whether you have read this already. Anyways, the Effect of Cassia Auriculata Flowers on Blood Sugar Levels, Serum and Tissue Lipids in Streptozotocin Diabetic Rats was studied and the report was published by Singapore Medical Association. You can find the detailed report at http://diatea.com/files/testresults1.pdf . I hope this report will get you a great answer if you haven't read it already