| Word | Definitions | Synonyms |
|---|---|---|
| hyoscine | (noun) an alkaloid with anticholinergic effects that is used as a sedative and to treat nausea and to dilate the pupils in ophthalmic procedures | Synonyms: scopolamine |
| hyoscyamine | (noun) a poisonous crystalline alkaloid (isometric with atropine but more potent); used to treat excess motility of the gastrointestinal tract | - |