Hello: Dendrobium is a yang-tonifying medicine of traditional Chinese medicine, which has the effects of nourishing yin and moistening lung, benefiting stomach and promoting fluid production, and clearing away deficiency and heat; Dendrobium can be used to treat yin deficiency, dysphoria, retching and tongue dryness caused by fever or insufficient stomach yin. It can also be used for thirst, dysphoria and persistent deficiency heat caused by dissipation of vaginal fluid and unclear residual heat in the late stage of fever. At the same time, Dendrobium has the effects of improving eyesight and strengthening waist and knees; But it has no effect of invigorating qi and blood.