epinephrine

plural epinephrines

1. countableuncountablebiochemistryA catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized from norepinephrine. It is also used as a medication.

   At the ER, after deflating me with a cocktail of epinephrine, a steroid and an antihistamine, the doctors scolded me for not coming in more quickly: I could have died of asphyxiation.

   2023 November 1, “‘We’re sedating women with self-care’: how we became obsessed with wellness”, in The Guardian, →ISSN

   1 more example

   “Anyone who has experienced or witnessed an anaphylaxis reaction knows it can be very stressful deciding when to inject epinephrine to themselves or a child and often delay,” Dr. Jonathan Spergel, chief of the allergy program at Children’s Hospital of Philadelphia, said in a news release from ARS Pharmaceuticals.

   2024 August 9, Meg Tirrell, “First nasal spray epinephrine drug for emergency allergic reactions gets FDA approval”, in CNN

   Synonyms: adrenaline, 4, 5-β-trihydroxy-N-methylphenethylamine