Plantago asiatica (Plantago asiatica): The stems are short and thick, the leaves are long and oval, and the seeds contain coral wood, fat and mucus. It is a pure natural plant fiber source, which can absorb several times its own weight of water, form jelly-like viscous substances, and increase the water content and volume of feces. Compared with other plant fibers, it has better water absorption, can soften feces, avoid constipation, and the gel formed has sedative effect, and can also achieve the purpose of losing weight and eating less.