Cinnamon has been used for thousands of years to treat digestive disorders, but recent research has shown that cinnamon can also help maintain energy balance between meals. The product uses cinnamon bark, as unlike the oil, the active substances found in the bark are what give cinnamon its biological effects. The amount of cinnamon extract found in Lamberts Cinnamon is equal to the levels of cinnamon extract used in the majority of published scientific studies, which unfortunately is not the case for all cinnamon preparations on the market today.