Which option describes the purpose of LU drugs according to the established criteria?

The purpose of LU (Limited Use) drugs is specifically to enhance treatment outcomes in certain defined situations that meet specific criteria set by regulatory authorities. These drugs are not intended for general use or as first-line therapies; rather, they are designated for special circumstances where their use is necessary to achieve better health outcomes.

In many cases, LU drugs are associated with conditions that may not respond well to standard therapies, or they may be used when the benefits significantly outweigh the risks for particular patient populations. The criteria for their use typically include evidence of their effectiveness in these selected scenarios, which is why their primary role is focused on improving patient care in targeted instances rather than providing general medication, reducing costs, or replacing conventional therapies. This targeted approach ensures that patients receive the most appropriate treatment for their specific medical needs, thereby optimizing healthcare outcomes.