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Current treatment uses antibody-based antivenoms which are constrained by their efficacy, safety, and cost. In this study we evaluated the efficacy of previously described repurposed drugs against viperid snakes of the medically important\n                    <jats:italic>Bothrops<\/jats:italic>\n                    genus. Despite variable toxin representation and bioactivity across this central and south American genus, we found that the lead inhibitors targeting metalloproteinases (marimastat and DMPS) and phospholipases (varespladib) demonstrated pan-species neutralisation in enzymatic assays, whilst nafamostat (serine protease inhibitor) had variable activity. The metalloproteinase inhibitors protected against the procoagulant and haemorrhagic effects of several venoms in phenotypic assays. Collectively these findings demonstrate that repurposed drugs may be of great value as early interventions for the treatment of bothropic envenoming in the Neotropics and thus provide a strong rationale for their progression into future preclinical and clinical evaluation for snakebite indication.\n                  <\/jats:p>","DOI":"10.7554\/elife.110419","type":"journal-article","created":{"date-parts":[[2026,3,10]],"date-time":"2026-03-10T14:30:17Z","timestamp":1773153017000},"update-policy":"https:\/\/doi.org\/10.7554\/elife.110419","source":"Crossref","is-referenced-by-count":3,"title":["Repurposed small molecule toxin inhibitors neutralise a diversity of venoms from the Neotropical viperid snake genus Bothrops"],"prefix":"10.7554","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3945-0530","authenticated-orcid":true,"given":"Rachel 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