There is no special regulation on whether to take Chicken Neijin for gallstones before or after meals, and you need to follow the doctor’s prescription for medication. Chicken Neijin belongs to the Chinese herbal medicines, has the effect of promoting the flow of gonorrhea and dissolving stones, strengthening the stomach and eliminating food, astringent essence and stopping spermatorrhea (consolidating semen and preventing spermatorrhea). It is used in treating food stagnation (the accumulation of food in the stomach due to indigestion), pediatric chancre (a kind of chronic disease of children, manifesting as emaciation, abnormal diet, abdominal distension, thinning and yellowing of hair, etc.), vomiting and diarrhea, stonelike drenching (the discharge of sand and stones during urination, or sudden interruption of urination, pain in the urethra, and intolerable pain in the lower back and abdomen) and astringent pain, dysuria, seminal emission, biliousness and coercive pain (pain in the area of the coercive ribs). It is well documented that Chicken Nei Jin can be used for all kinds of stone diseases. It can be used as a decoction for internal use, as a powder, or in the form of pills or powders. There are no specific rules on whether it should be taken before or after meals, so this product is not affected by eating. Specific use should follow the doctor’s advice. Jin Nei Jin is used to treat gravel gonorrhea (increased frequency of urination, drenching and pain) or gallstones, and is often used in combination with Qian Cao and Hai Jin Sha. Adverse effects of Chicken Nei Jin are not clear, and the product is not suitable for those with spleen deficiency without stagnation.