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Resumo(s)
The purchase of generic drugs has been increasingly encouraged by Governments, as a
way of reducing health costs. However, their acceptance by consumers is not that straightforward
and it has been seen some resistance associated with lack of information and some other
factors, including loyalty to previously used branded products. Thus, this dissertation aims to
study the consumers’ preferences over generic drugs, by clarifying some of these speculations
while trying to check whether the data confirms these reasonings.
This was possible by exploring a rich database from the Portuguese National Association
of Pharmacies, which includes very detailed information of each medicine sales at pharmacies
in Portugal.
The results show that when introducing one more equivalent generic medicine in a group,
the individual share of each drug decreases, although the generic ones suffer a higher decrease
in their shares. Additionally, generic drugs tend to have a lower individual share than the equivalent
branded medicines.
Afterwards, over a short time, even on year-on-year comparisons, the shares of generic
drugs tend to increase, opposed to the shares of branded products, which indicates a relatively
fast change in preferences, based on the speed of information spreading and reputation building.
Although in the analyzed sample people buy more generic than non-generic drugs, it is
shown that if one more generic medicine and the correspondent proportion of branded drugs is
introduced such that the proportion of equivalent generic drugs remains unchanged, the branded
products will immediately capture a higher market share.
Descrição
Palavras-chave
Consumers’ preferences Generic drugs Drugs market