Clemastine, also known as meclastin, is a first-generation H1 histamine antagonist (antihistamine) with anticholinergic properties (drying) and sedative side effects. Like all first-generation antihistamines, it is sedating.
{{Drugbox | Watchedfields = changed | verifiedrevid = 460041264 | IUPAC_name = (2R)-2-{2-[(1R)-1-(4-chlorophenyl)-1-phenylethoxy]ethyl}-1-methylpyrrolidine | image = Clemastine.svg | image_class = skin-invert-image | width = 222 | image2 = Clemastine ball-and-stick.png | image_class2 = bg-transparent
| tradename = | Drugs.com = | MedlinePlus = a682542 | pregnancy_US = B | legal_status = otc | routes_of_administration = Oral
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).