When used clinically for the treatment of gallstones, Chicken Nei Jin is usually decocted or powdered. The efficacy of Jin Nei Jin is to strengthen the stomach and eliminate food, astringent and stopping spermatorrhea (consolidating semen and preventing spermatorrhea), and clearing gonorrhea and resolving stones. It is used for food accumulation (food indigestion and accumulation in the stomach), vomiting, diarrhea and dysentery, and pediatric chancre (a chronic disease of children, manifesting as emaciation, abnormal eating and drinking, abdominal distension, and thinning and yellowing of the hair). It can also be used for dysuria, spermatorrhea, lithiasis (discharge of gravel during urination, or sudden interruption of urination, pain in the urethra, and intolerable pain in the lower back and abdomen), astringent pain, and bilious distension and dystocia. If it is to be used medicinally, the main choice is the dried sandy sac lining of the domestic fowl of the pheasant family. Because Chicken Neijin can play a clinical role in opening up the lymphatic system and removing stones, it can be paired with medicines such as Qian Cao and Tiger Cane to treat gallstones. When using the medication, Chicken Nei Jin is usually decocted or powdered. However, it is not recommended to use the drug if the spleen is weak and there is no stagnation. Specific medication should be used under the guidance of a doctor and should not be taken on its own.