Dendrobium officinale stem roll is an excellent treatment for kidney Yin deficiency. It nourishes kidney Yin and reduces deficiency fire, suitable for symptoms such as lackluster eyes and dry, restless heart due to kidney Yin deficiency. Dendrobium officinale stem roll enhances the body's immune function. The polysaccharides in Dendrobium officinale stem roll can increase the number of white blood cells, ensuring the normal functioning of the immune system.