What is a top-grade medicinal material? What top-grade medicinal materials are there? How to use top-grade medicinal materials? Top-grade medicinal materials, as the name implies, are good medicinal materials: not only the quality of medicinal materials is good, but also they have a good health care function, that is, they have the effects of "nourishing life to meet the needs of the sky" and "it will not hurt people if they are taken many times for a long time".