Drug price transparency initiative: A scoping review

Drug price transparency is defined as readily available information on the price of pharmaceutical drugs to either authorities or consumers. Price transparency, together with other information, helps define the value of drugs and enables informed decision making. It has also been used as a reference in drug price setting mechanisms in some countries' pricing policies.

To investigate the evidence available: 1) on government initiatives to mandate transparency in drug pricing worldwide, 2) on the reported effects of drug pricing transparency initiatives on drug price, and 3) on the limitations and barriers of the implementation of drug pricing transparency.

Databases such as Medline-Ovid, Cochrane Central Register, PubMed, and Science Direct were used to search for relevant literature from inception to February 2018. A manual search of grey literature such as policy papers, governmental publications, and websites was also performed to obtain the information that was not available in the articles. Using narrative synthesis, the results were critically assessed and summarized according to its context of drug pricing approaches.

Of the 4382 relevant articles located, 12 studies met the inclusion criteria for drug price transparency initiatives. Only 3 studies reported the outcomes on the regulation of drug prices. Two studies in South Africa showed that price transparency initiatives did not necessarily reduce drug prices. Another study in the Philippines indicated a reduction in medicines' price based on the effects of government-mediated access prices. The limitations and barriers in price transparency initiatives include fragmentation of the healthcare system and nondisclosure of discounts and rebates by pharmaceutical companies.

Drug pricing transparency initiatives have been implemented in many countries and commonly coexist with a country's pricing policies. Nevertheless, due to sparse evidence, the effect of drug price transparency initiatives on price control is still inconclusive.