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sympathomimetic drug(sĭmpăth'ōmĭmĕt`ĭk), any of a group of substances whose actions resemble the response of stimulated sympathetic nerves (see nervous systemnervous system,
network of specialized tissue that controls actions and reactions of the body and its adjustment to the environment. Virtually all members of the animal kingdom have at least a rudimentary nervous system.
..... Click the link for more information. ). These drugs include epinephrineepinephrine
, hormone important to the body's metabolism, also known as adrenaline. Epinephrine, a catecholamine, together with norepinephrine, is secreted principally by the medulla of the adrenal gland.
..... Click the link for more information. and other catecholaminescatecholamine
, any of several compounds occurring naturally in the body that serve as hormones or as neurotransmitters in the sympathetic nervous system. The catecholamines include such compounds as epinephrine, or adrenaline, norepinephrine, and dopamine.
..... Click the link for more information. that are naturally produced in the body, and chemically similar substances such as ephedrineephedrine
, drug derived from plants of the genus Ephedra (see Pinophyta), most commonly used to prevent mild or moderate attacks of bronchial asthma. Unlike epinephrine, to which it is chemically similar, ephedrine is slow to take effect and of mild potency and long
..... Click the link for more information. . Sympathomimetic drugs excite the central nervous system and heart and affect the diameter of blood vessels. They are used as decongestants and to alleviate bronchial asthmaasthma
, chronic inflammatory respiratory disease characterized by periodic attacks of wheezing, shortness of breath, and a tight feeling in the chest. A cough producing sticky mucus is symptomatic.
..... Click the link for more information. . Because they inhibit the production of the body substance histaminehistamine
, organic compound derived in the body from the amino acid histidine by the removal of a carboxyl group (COOH). Although found in many plant and animal tissues, histamine is specifically important in human physiology because it is one of the chemicals released from
..... Click the link for more information. , they are prescribed for allergic conditions along with antihistaminesantihistamine
, any one of a group of compounds having various chemical structures and characterized by the ability to antagonize the effects of histamine. Their principal use in medicine is in the control of allergies such as hay fever and hives.
..... Click the link for more information. .