Look at the box first. From the outer packaging, there should be a clear name, composition, nature, functional indications, specifications, usage and dosage, adverse reactions, contraindications, packaging, manufacturer, production batch number and expiration date. In addition, genuine cartons are hard and not easy to be layered; The appearance color is pure, the printing handwriting is clear, and the printing batch number is opaque to the carton.

Second: look at the drug approval number. Any drug has its specific approval number, just like everyone has an ID card. At present, the drug approval number has been uniformly renewed in China. We can distinguish the authenticity of drugs by observing the format of the approval number. The approval number consists of H(z, s, J)+8 digits, where H stands for chemicals, Z stands for traditional Chinese medicine, S stands for biological products, and J stands for the packaging of imported drugs.

Third: go to the website of the State Administration of Pharmaceutical Products.