Dictionary » D » Drug

Drug

Definition

noun, plural: drugs

(1) Any chemical substance administered for therapeutic purposes, diagnosis, prevention of diseases, and relieving symptoms

(2) A chemical substance that is intended to alter a biochemical process for a particular purpose

(3) A psychoactive substance


Supplement

A drug is a chemical substance that is administered or taken to incite a biological effect in the body of an organism. It may be pharmacological in nature (used for health-related purposes) or recreational (which are mostly psychoactive). Drugs render biological effects depending on their composition, dosage, and route of administration. Some of them contain a single active ingredient whereas others are a mix of various chemicals in a single unit. The ingredients may be synthesized or derived biologically (e.g. herbal, marine-derived, animal-derived, microbial, genetic engineering, etc.) or chemically. Drugs for medical purposes can also be classified based on their biological effects: antipyretics, analgesics, antibiotics, antiseptics, hormone replacements, oral contraceptives, stimulants, tranquilizers, statins, etc.


Word origin: Middle English drogge (medicine)

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Results from our forum


"dose"-response curves

I have always wondered why dose-response curves are constructed against the concentration of a drug rather than the amount of a drug. Typically, an effect increases or decreases with increasing concentration in g/l or mol/l. Why not graphing an effect against a mass in ...

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by Mathias
Wed Feb 25, 2015 3:23 pm
 
Forum: Cell Biology
Topic: "dose"-response curves
Replies: 0
Views: 87

Main Factors that Affect Clinical Consequence of Toxicity

... absorption of the active ingredient. As absorption is delayed, toxicity decreases. Creative Animode offers standard protocols designed to support drug approval submissions to domestic and international regulatory agencies. With multiple test species available, studies are overseen by Study Directors ...

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by 2444256703
Thu Jan 29, 2015 7:30 am
 
Forum: Molecular Biology
Topic: Main Factors that Affect Clinical Consequence of Toxicity
Replies: 0
Views: 131

antibiotic overuse ???

... game, causing the patient considerable pain and perhaps even costing their lives. Also, and this is the important point...after EVERY use of the drug, there must be ongoing monitoring to ensure its the right drug and at the right strength, taken for long enough to kill the germ. i.e. hit it hard ...

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by androspandros
Thu Sep 18, 2014 8:43 am
 
Forum: Human Biology
Topic: antibiotic overuse ???
Replies: 3
Views: 3689

Re: Any ideas for vaccine development or anti-viral drugs???

Happens I have this handy. Following are citations of Ebola or Marburg filovirus drug development using Morpholino antisense oligos. Enjoy. -------------------------------------- Enterlein S, Warfield KL, Swenson DL, Stein DA, Smith JL, Gamble CS, Kroeker AD, Iversen ...

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by jonmoulton
Mon Sep 15, 2014 3:04 pm
 
Forum: Cell Biology
Topic: Any ideas for vaccine development or anti-viral drugs???
Replies: 2
Views: 11322

Molecular medicine: antisense

... about efforts to advocate for a new medicine. Here are a few articles on Duchenne muscular dystrophy and eteplirsen, a Morpholino antisense drug currently in clinical trials. http://www.huffingtonpost.com/tracy-seckler/eteplirsen-duchenne_b_4904850.html http://www.huffingtonpost.com/lauren-caruba/a-race-against-the-clock-_b_4900631.html

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by jonmoulton
Thu Mar 06, 2014 4:19 pm
 
Forum: Molecular Biology
Topic: Molecular medicine: antisense
Replies: 0
Views: 998
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