What is over-the-counter? Non-prescription drugs are generally born out of prescription drugs, that is, they take a long time (6 ~ 10 years) comprehensive investigation, confirmed that some prescription drugs are safe, effective, easy to use, less adverse reactions, stable quality, and difficult to deteriorate during the storage period at normal temperature, you can become a non-prescription drug after being approved by the national non-prescription drug selection agency.
The design pattern is the design of prescription drugs. The design model is generally originated from a specific actual solution, that is, through a long period of time (n to n + 1 years internationally) comprehensive investigation, it is confirmed that some design schemes have the advantages of good scalability, wide application, convenient use, less adverse reactions, and easy maintenance, and can be selected by the relevant organizations or Daniel as the design model.