First of all, when purchasing, you should choose Xiasangju granules from regular manufacturers. In identification, after the dissolution of Xiasangju granules, the high-quality ones are generally yellowish and transparent, while the inferior ones are turbid. At the same time, Xiasangju granules are also over-the-counter drugs. When purchasing, you must look for the words "National Medicine Zhunzi" on the outer packaging. There has been such a report in the news, you can have a look.