Plum Extract: Plums are small, sweet fruits normally the size of a golf ball. In terms of properties, they, too, consist of a large antioxidant profile, which, as mentioned repeatedly, is imperative for taming inflammation, regulating blood sugar levels, and maintaining healthy heart function. Not surprisingly, this ingredient contains a high fiber concentration, helping to slow digestion and prevent spikes in blood sugar while supporting healthy gut function as a prebiotic. As a fiber, plums add bulk to stools, allowing them to pass easily. Since plums contain sorbitol, they might also exhibit laxative properties.