1, International Generic Drug Name (INN): This is a generic drug naming system formulated by the World Health Organization (WHO). INN is a standardized drug name, which is used to identify the effective components of drugs. Each active ingredient has its own uniqueness to ensure consistency and communication on a global scale. For example, acetaminophen is the corresponding INN, which is the active ingredient of common antipyretic and analgesic drugs.
2. National Drug Code (NDC): This is a coding system developed by the US Food and Drug Administration (FDA) for identifying and tracking drugs. NDC is a 12 digit numerical code, which is used to uniquely identify the manufacturer, product and packaging specifications of drugs. NDC consists of three parts: manufacturer code, product code and packaging specification code. NDC plays an important role in the American pharmaceutical market, which is used for drug classification, distribution and reimbursement. So the drug country code is as shown above.