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You can check it in the State Administration of Pharmaceutical Products, and the website has been given by netizens (home page: www.sfda.gov.cn). However, it should be the approval number, which was approved by the State Administration of Medical Supplies for the record. If it can be found on the website of the State Administration, and the drug information in your hand is consistent with this information, and it is bought in a regular pharmacy, it is not a big problem.
Of course, there may also be counterfeit drugs. The drug information contains the batch number, such as domperidone tablets (domperidone) produced by Xi Anyansen, and the batch number 080323392 is counterfeit. According to the verification of Xi US Food and Drug Administration, the company does not need to produce this batch of motilium.
This requires a drug testing institute to conduct testing, but it is generally not recommended for individuals to apply for testing because the cost is staggering.
If you suspect that the medicine you bought is fake, it is recommended to consult the local drug supervision department.