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Public databases of common adverse drug reactions (ADRs) depend on individual reports from drug manufacturers and health professionals. However, this passive approach to ADR surveillance has been shown to suffer from severe under-reporting. Social media, such as online health forums where patients across the globe willingly share their drug intake experience, is a viable and rich source for detecting unreported ADRs. In this paper, we design an ADR Detection Framework (ADF) using Natural Language Processing techniques to identify ADRs in drug reviews mined from social media. We demonstrate the applicability of ADF in the domain of Diabetes by identifying ADRs associated with diabetes drugs using data extracted from three online patient-based health forums: askapatient.com, webmd.com, and iodine.com. Next, we analyze and visualize the ADRs identified and present valuable insights including prevalent and less prevalent ADRs, age and gender differences in ADRs detected, as well as the previously unknown ADRs detected by our framework. Our work could promote active (real-time) ADR surveillance and also advance pharmacovigilance research. <\/jats:p>","DOI":"10.1177\/14604582221136712","type":"journal-article","created":{"date-parts":[[2023,3,1]],"date-time":"2023-03-01T16:20:57Z","timestamp":1677687657000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":16,"title":["Identifying adverse drug reactions from patient reviews on social media using natural language processing"],"prefix":"10.1177","volume":"29","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5797-7790","authenticated-orcid":false,"given":"Oladapo","family":"Oyebode","sequence":"first","affiliation":[{"name":"Faculty of Computer Science, Dalhousie University, Halifax, NS, Canada"}]},{"given":"Rita","family":"Orji","sequence":"additional","affiliation":[{"name":"Faculty of Computer Science, Dalhousie University, Halifax, NS, Canada"}]}],"member":"179","published-online":{"date-parts":[[2023,3,1]]},"reference":[{"key":"bibr1-14604582221136712","doi-asserted-by":"publisher","DOI":"10.1186\/S12913-019-4651-7"},{"key":"bibr2-14604582221136712","unstructured":"World Health Organization (WHO). 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