Bering capsule has the effect of kidney protection such as repairing damaged kidney cells as well as lowering creatinine. Bailing capsule is a kind of Chinese patent medicine, the main ingredient is fermented Cordyceps sinensis powder, from the point of view of Chinese medicine, the main effect is to tonify the lungs and kidneys, benefit the essence. Pharmacological experiments show that the drug can reduce the serum creatinine, urea nitrogen and urinary protein content after renal impairment, so it has the effect of renal protection, so it can be clinically used in the treatment of chronic renal insufficiency patients. Adverse reactions of Bailing capsule are mainly manifested as pharyngeal discomfort. Allergic to the product is prohibited. Avoid spicy, cold and greasy food during the medication. In order to ensure the safety and effectiveness of the medication, it must be used in strict accordance with medical advice.