In the field of medicine, drugs are divided into patented drugs (original research drugs) and generic drugs (generic drugs) according to the characteristics of research and development.
The former needs to invest a lot of money in the research and development stage, and will be protected by patents for a long time after its successful listing, thus obtaining rich profits; Generic drugs are drugs that are listed after the patent of patented drugs expires and have exactly the same chemical composition as patented drugs. On the premise of ensuring the quality of drugs, the price of drugs will be greatly reduced and the treatment cost of patients will be reduced.