22 Feb 2018 --- Pterocarpus marsupium extracts help lower blood glucose and HbA1c levels, increasing the levels of the hormone insulin in diabetic rats. This is according to a recently published study in the Journal of Dietary Supplements. Manufactured by Sami Labs (the manufacturing arm of Sabinsa Corporation), these extracts contain water-soluble C-glycosidic components and lower oxidative stress and inflammatory markers such as TNF-α, IL-6 (and its mRNA) in diabetic hepatic tissue.