Hormone
epinephrine Audio
ep·i·neph·rine [ ep-uh-nef-rin, -reen ]
Brand Names:
Adrenaclick; Adrenalin; Articadent; Auvi-Q; Citanest Forte; Epipen; Lignospan; Marcaine with Epinephrine; Orabloc; Primatene Reformulated Jan 2019; Sensorcaine with Epinephrine; Septocaine; Symjepi; Ultacan; Vivacaine; Xylocaine with Epinephrine; Zorcaine
Effect:
Arterial Vasoconstriction; Bronchodilation; Decreased Intraocular Aqueous Secretion; Decreased Uterine Smooth Muscle Contraction or Tone; Hemostasis Alteration; Increased Blood Pressure; Positive Chronotropy; Positive Inotropy; Pupillary Dilation
May Treat:
Airway Obstruction; Anaphylaxis; Bradycardia; Bronchial Spasm; Glaucoma, Open-Angle; Heart Arrest; Heart Block; Hypotension; Shock, Septic; Tachycardia, Ventricular; Ventricular Fibrillation
More Information:
ChemID; DrugBank; DailyMed; PDR
Definitions related to epinephrine:
  • (adrenaline) Stress hormone that puts the body on high alert. Changes include faster heartbeat, more rapid breathing, greater energy, and higher blood pressure. Also called epinephrine.
    Harvard Dictionary of Health Terms
    Harvard Medical Publishing, 2011
  • A hormone and neurotransmitter.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • Active sympathomimetic hormone from the adrenal medulla in most species; it stimulates both the alpha- and beta- adrenergic systems, causes systemic vasoconstriction and gastrointestinal relaxation, stimulates the heart, and dilates bronchi and cerebral vessels; used in treatment of asthma and cardiac failure and to delay absorption of local anesthetics.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • The active sympathomimetic hormone from the ADRENAL MEDULLA. It stimulates both the alpha- and beta- adrenergic systems, causes systemic VASOCONSTRICTION and gastrointestinal relaxation, stimulates the HEART, and dilates BRONCHI and cerebral vessels. It is used in ASTHMA and CARDIAC FAILURE and to delay absorption of local ANESTHETICS.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • (therapeutic epinephrine) The synthetic form of the naturally occurring sympathomimetic amine with vasoconstricting, intraocular pressure-reducing, and bronchodilating activities. By stimulating vascular alpha-adrenergic receptors, epinephrine causes vasoconstriction, thereby increasing vascular resistance and blood pressure. When administered in the conjunctiva, this agent binds to alpha-adrenergic receptors in the iris sphincter muscle, resulting in vasoconstriction, a decrease in the production of aqueous humor, and a lowering of intraocular pressure. Through its beta1 receptor-stimulating actions, epinephrine increases the force and rate of myocardial contraction and relaxes bronchial smooth muscle, resulting in bronchodilation.
    NCI
    U.S. National Cancer Institute, 2021
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.