[How do generic quotas work? An analysis using HIV infection as an example].

Background: Instruments controlling statutory healthcare medical supply have long been a topic of debate in health policy reform discussions. Over the years, a variety of tools have been developed, most of which are aimed at controlling drug expenditure. The instruments controlling regional prescriptions primarily focus on controlling behavioural patterns of the prescribing physicians. Important to note is the increased use of indication-directed quotas, primarily of drug leads and/or generics/biosimilars. These are now also available in the area of the human immunodeficiency virus (HIV), such as the generic quotas for HIV medications introduced in Bavaria and Berlin in 2020.

Objective: The aim of this article is to analyse the benefits and limitations of generic quota solutions in HIV care using statutory health insurance drug prescription data and to outline recommendations for action.

Results: It was observed that the quota potential for generics in the area of patent-free drugs in HIV care has already been largely exhausted. This can be explained by HIV prescribers supporting product exchange on the prescription.

Discussion: The best-case scenario in terms of regulation has almost been reached. This is due to a suitable set of instruments, including the framework agreement for medical supply as well as prescribing according to guidelines - in conjunction with the Pharmaceuticals Market Reorganisation Act (AMNOG) and reference prices for drugs. Conforming with guidelines and (existing) single-tablet regimens play an integral role in maintaining good quality of care.