Cortex Eucommiae is generally not harmful to the kidneys, and has a certain effect of tonifying the kidneys. Cortex Eucommiae is a traditional Chinese medicine with a sweet flavor and warm nature, which belongs to the liver and kidney meridians. It has the efficacy of tonifying the liver and kidney, strengthening the muscles and bones, and tranquilizing the fetus. In clinical practice, it is often used for patients with lumbar and knee pain, weakness of muscles and bones, dizziness, leakage of blood in pregnancy, and restlessness of the fetus caused by insufficiency of the liver and kidneys (weakness of the liver and kidneys). The drug is generally not harmful to the kidneys, but the dosage should be used in accordance with the doctor’s prescription and should not be increased on its own to avoid adverse effects on the body. Cortex Eucommiae can be used in conjunction with other traditional Chinese medicines such as Duhuo, Chuanxiong, Lycium barbarum, Angelica sinensis, and Sanghongsheng, etc. It is recommended that you consult with a professional Chinese medicine practitioner for advice on which traditional Chinese medicine to use according to your own symptoms, and do not take the medicine blindly.