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The trial termination cited as motivation involved a different, more potent inhibitor.\nexposure: Inhibition kinetics with IC50 values and predicted intestinal concentrations\nevidence_span: {\"source_cache\": \"artifacts/metformin-research/31764942.abstract.txt\", \"locator\": \"Indexed abstract; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"21758b02cd824f37a6e1e076657c0cf72d08cc6babcb66773613f129dc13f15b\", \"start_char\": 0, \"end_char\": 1829, \"text_sha256\": \"21758b02cd824f37a6e1e076657c0cf72d08cc6babcb66773613f129dc13f15b\"}\n[metformin-p31764942] Drug-nutrient interactions: discovering prescription drug inhibitors of the thiamine transporter ThTR-2 (SLC19A3). 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