Epinephrine (also referred to as adrenaline ; see Terminology ) is a hormone and neurotransmitter . It is a catecholamine , a sympathomimetic monoamine derived from the amino acids phenylalanine and tyrosine . more

Epinephrine (also referred to as adrenaline ; see Terminology ) is a hormone and neurotransmitter . It is a catecholamine , a sympathomimetic monoamine derived from the amino acids phenylalanine and tyrosine . The Latin roots ad- + renes and the Greek roots epi- + nephros both literally mean "on/to the kidney " (referring to the adrenal gland , which sits atop the kidneys and secretes epinephrine). Epinephrine is often shortened to E or to EPI in Medical jargon . Epinephrine increases the response of the sympathetic division of the Autonomic Nervous System. less