Definition of hyoscine in English:



mass nounChemistry
  • A poisonous plant alkaloid used as an anti-emetic in motion sickness and as a preoperative medication for examination of the eye.

    Chemical formula: C₁₇H₂₁NO₄. It is obtained chiefly from plants of the genus Scopolia, family Solanaceae

    Also called scopolamine
    • ‘Valid data are needed on old molecules that are still widely used in clinical practice (for example, haloperidol or hyoscine).’
    • ‘Healy has a surprising affection for clinically attested, but unproven remedies, as insulin therapy, isoniazid, hyoscine, St. John's Wort, etc.’
    • ‘There are also painkilling tablets available that contain the drug, hyoscine (eg Feminax), that may help prevent the muscle contractions.’
    • ‘For more serious travel sickness your doctor may prescribe patches containing hyoscine (an anti-nausea drug).’


Late 19th century: from modern Latin hyoscyamus (see hyoscyamine) + -ine.