Losebig Caps, with its unique composition, comes to cover overeating in quantities during meals. It contains approved ingredients such as Berberine, Psyllium, Jujuba, Apple Cider and Glucomannan which, according to the official EFSA guideline, taking two capsules before a meal with 1000 mg contributes to weight loss. Glucomannan is a dietary fiber derived from the root of the Konjac plant (Amorphophallus konjac), a perennial plant native to Southeast Asia and Africa that has beneficial effects on the digestive system while containing almost no calories. As a dietary supplement, glucomannan is officially used to treat obesity. It has an important physicochemical property such as that of absorbing water. This property makes it swell in the stomach, resulting in a feeling of fullness and satiety. It is a type of nonionic hydrocolloid dietary fiber and consists of D-mannose and D-glucose linked by β-1, 4 glycosidic bonds in a molar ratio of 1:1.6–1:1. 4. In addition, there are acetyl groups at random positions along the molecule. The molecular weight of glucomannan ranges up to 2,000,000, depending on its extraction processes. Glucomannan can form a layer around food and therefore can inhibit the absorption of cholesterol and bile acids. It also forms a protective film on the intestinal wall and prolongs the residence time of food in the stomach. In addition, fiber cleanses the stomach and removes toxins through intestinal peristalsis. As it is effective in absorbing water and is low in calories, it promotes satiety and reduces hunger.