Objectives
The rise of social media has broadened the reach and impact of pharmaceutical promotion across countries. This scoping review synthesizes available literature on the nature, extent, and impacts of such promotion, with a particular focus on public health implications.
Methods
Using a systematic strategy, we searched six multidisciplinary scholarly databases for empirical studies, both peer-reviewed and grey, published since 2004, which had collected data on pharmaceutical promotion via social media. Data were synthesized qualitatively into outcome domains.
Key findings
We included 45 studies, primarily conducted in the USA (20/45, 44%) and multi-nationally (15/45, 33%), and published after 2013 (40/45, 89%). Studies used content analyses, surveys, and interviews to measure pharmaceutical industry presence or impacts on the following indicators: social media, social media strategy, consumer reach and engagement, health information quality, ethical and regulatory guideline adherence, and consumer attitudes and behaviours. Taken together, these studies indicate a gradual increase in industry use of social media, notably including the development of novel consumer engagement strategies, such as targeted promotion and influencer sponsorship. Studies also showed that, in some cases, health information provided on social media is of low quality, ethically and legally questionable, and potentially harmful to public health.
Conclusions
Appreciating the regulatory and reputational risks of consumer engagement on social media, the pharmaceutical industry has gradually increased promotional activities on social media since its inception. Evidence of harmful content and promotional activities that have become more covert and targeted suggests the need for regulatory development.
