About INU-Slim™ is an excellent source of inulin soluble fiber that is clinically proven to help you eat less. INU-Slim™ helps you eat fewer calories and still feel satisfied.Each tube of INU-Slim™ supplement has a combination of 6 grams of soluble fiber from inulin and beta-glucan. Inulin is a natural prebiotic fiber found in vegetables and beta-glucan is a healthy soluble fiber found in oats. Studies have shown that these soluble fibers may activate hormones in the digestive system that signal fullness. Fiber is also the last nutrient to breakdown in the digestive tract, which extends the feeling of fullness.