Banaba is a botanical extract that comes from the leaves of the banaba tree. In Southeast Asia and the Philippines, the leaves are traditionally used as an herbal medicine to treat diabetes and hyperglycemia (elevated blood sugar). Corosolic acid, a triterpenoid found in the leaves, helps regulate blood sugar by stimulating glucose uptake. This blood sugar lowering effect is similar to that of insulin??”which induces glucose transport from the blood into body cells. This helps avoid the blood sugar slumps that often lead people to over eat.