depressant


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Related to depressant: Anti depressant

depressant,

any one of various substances that diminish functional activity, usually by depressing the 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.
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. Barbituratesbarbiturate
, any one of a group of drugs that act as depressants on the central nervous system. High doses depress both nerve and muscle activity and inhibit oxygen consumption in the tissues. In low doses barbiturates act as sedatives, i.e.
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, sedativessedative,
any of a variety of drugs that relieve anxiety. Most sedatives act as mild depressants of the nervous system, lessening general nervous activity or reducing the irritability or activity of a specific organ.
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, alcohol, and meprobamatemeprobamate
, tranquilizing drug that acts as a depressant of the central nervous system and is commonly used in the treatment of anxiety and sometimes schizophrenia. Although meprobamate is chemically unlike barbiturates and has lower toxicity, it has similar pharmacological
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 are all depressants. Depressants have various modes of action and effects. Some are primarily used medically to relieve emotion stress, anxiety, and tension; others induce sleep, and still others are used to relieve pain. Depressants also reduce the rate and force of contraction of the heart and are used in the treatment of some forms of heart diseaseheart disease,
any of several abnormalities of the heart and its function in maintaining blood circulation. Heart disease is the cause of approximately half the deaths in the United States each year.
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. Many depressants can induce psychological dependence and addiction (see drug addiction and drug abusedrug addiction and drug abuse,
chronic or habitual use of any chemical substance to alter states of body or mind for other than medically warranted purposes. Traditional definitions of addiction, with their criteria of physical dependence and withdrawal (and often an underlying
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). Typically, overdosage results in confusion, coma, and convulsions. In many cases, the effects of one depressant are intensified if another depressant is taken at the same time, e.g., if barbiturates are taken with alcohol. Because of their potential for abuse, there are now strict regulations regarding the dispensing of many depressant drugs.

depressant

1. Med able to diminish or reduce nervous or functional activity
2. a depressant drug
References in periodicals archive ?
This study aims to estimate the pour point depressant market in 2015 in terms of volume and value and project its demand by 2020.
However, this drug is a stimulant, whereas scopolamine is a depressant.
Browse 138 market data Tables and 56 Figures spread through 197 Pages and in-depth TOC on "Pour Point Depressants Market"
Melatonin is best for helping to fall asleep, but may not help maintain the slumber, since it is not a depressant.
At first the former district nurse was prescribed the cheaper tricyclic class of anti- depressants.
Conaway, who allegedly was under the influence of a central nervous system depressant, was booked on suspicion of misdemeanor driving under the influence of drugs or alcohol, Delgadillo said.
RISING suicide rates could be linked to a massive increase in anti- depressant medication, experts said yesterday.
The commission also directed LAPD Narcotics Division officers to come up with a public education campaign warning of the danger of the depressant, which detectives said has become a trendy staple of ``rave'' parties in Hollywood and the west San Fernando Valley.
He was also given depressant as well as anti-depressant drugs.
Asia-Pacific is the largest market for pour point depressants accounting for a share over 33.