Cortex Eucommiae can be used in combination with Bone Marrow, Fructus Schisandrae, Boswellia, Cortex Eucommiae and other medicines to tonify the liver and kidney, strengthen the muscles and bones, and activate blood circulation and remove blood stasis. However, there is no such thing as “the best formula” in clinical practice. 1. Cortex Eucommia Ulmoides: This drug is used to treat kidney deficiency and low back pain by combining with drugs that tonify the liver and kidney such as tonic bone marrow and hyssop; it is used to treat rheumatism and low back pain by combining with drugs that activate blood, dispel dampness and clear the channels such as Sanghuangsheng and Duhuo; it is used to treat menstrual low back pain by combining with drugs that activate blood such as Angelica Sinensis and Paeoniae Lactiflorae. It should be noted that the adverse effects of Duchenne are not clear, and it should be used with caution for yin deficiency and fire (deficiency of yin and essence in the body, and hyperactivity of deficiency fire). 2. Boneset: the drug with frankincense, myrrh and other drugs to activate blood stasis, for the treatment of bruises; with hyssop, boneset and other drugs to tonify the liver and kidneys, can be used to treat kidney deficiency lumbago; with goji berries, ripened rhubarb, and other nourishing yin and tonifying the kidneys, treatment of renal deficiency deafness. The adverse effects of Bone Marrow are not clear, but pregnant women, blood deficiency, wind dryness, yin deficiency and fire with caution. If you feel unwell, it is recommended to go to a regular hospital for consultation and treatment under the guidance of a professional physician for evidence-based treatment.