Sivelestat (INN, research name ONO 5046, marketed as Elaspol) is an inhibitor of human neutrophil elastase.
{{Infobox drug | Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 464392270 | IUPAC_name = N-{2-[({4-[(2,2-dimethylpropanoyl)oxy]phenyl}sulfonyl)amino]benzoyl}glycine | image = Sivelestat.svg | image_class = skin-invert-image
| tradename = | Drugs.com = | pregnancy_AU = | pregnancy_US = | pregnancy_category = | legal_AU = | legal_CA = | legal_UK = | legal_US = Not approved | legal_status = Rx-only | routes_of_administration = IV
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).