acetaminophen

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acetaminophen

(əsēt'əmĭn`əfĭn), an analgesicanalgesic
, any of a diverse group of drugs used to relieve pain. Analgesic drugs include the nonsteroidal anti-inflammatory drugs (NSAIDs) such as the salicylates, acetaminophen, narcotic drugs such as morphine, and synthetic drugs with morphinelike action such as meperidine
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 and fever-reducing medicine. It is an active ingredient in many over-the-counter medicines, including Tylenol and Midol. Introduced in the early 1900s, acetaminophen is a coal tar derivative that acts by interfering with the synthesis of prostaglandinsprostaglandin
, any of a group of about a dozen compounds synthesized from fatty acids in mammals as well as in lower animals. Prostaglandins are highly potent substances that are not stored but are produced as needed by cell membranes in virtually every body tissue.
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 and other substances necessary for the transmission of pain impulses. Although its action is similar to that of aspirinaspirin,
acetyl derivative of salicylic acid (see salicylate) that is used to lower fever, relieve pain, reduce inflammation, and thin the blood. Common conditions treated with aspirin include headache, muscle and joint pain, and the inflammation caused by rheumatic fever and
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, it lacks aspirin's anti-inflammatory and blood-thinning effects, is less irritating to the stomach, and can be used by people who are allergic to aspirin. Heavy use, however, has been linked to an increased incidence of liver failure, especially in heavy drinkers of alcoholic beverages and in those who are not eating enough, and overdose, especially in children, can be fatal.
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acetaminophen

[ə‚sēd·ə′mēn·ə·fən]
(organic chemistry)
C8H9O2N Large monoclinic prisms with a melting point of 169-170°C; soluble in organic solvents such as methanol and ethanol; used in the manufacture of azo dyes and photographic chemicals, and as an analgesic and antipyretic.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Tempra, Navarro and Caliri are affiliated with Imagen Diagnostica, Ciudad de Mendoza, Argentina; Dr.
The Tempra Brow eliminates the need for painful waxing, tweezing, or threading.
(1.) Tusman G, Boehm SH, Tempra A, Melkun F, Garcia E, Turchetto E et al.
Apple iPads also went to 28 winners including Irmina Orlowska, Eplgenio Tempra, Ali Khalil, Dilla Kumar, Fadwa Ibrahim, Stratigos Georgios, Joseph Dela Rosa, Amal Miknas, Yaqub Al Majid and Khalid Saeed.
The Italian flew in from Milan to pick up a 15-year-old Fiat Tempra, then drove it home to Laveno Mombello, about 40 miles north of Milan.
The bands, Indi-go Modem, from Pontypridd, and Tempra from Bridgend, had to go through an audition process.
and Mary Shapazian of Shrewsbury; seven grandchildren: Adam, Traci, Zachary, Kristen, Andrew, Daniel and Amanda; three great-grandchildren: Paige, Gwen and Tempra; also survived by several cousins, nieces and nephews.
(9) Solerti, 1891, 5: "Queste Principe, veramente in ogni sua azione riguardevole, tempra cosi i negozii con gli ozii, e il tempo con tant'ordine misura e dispensa, che ne da soverchio peso di cose serie snervare, ne da troppo leggierezza di giocose illanguidir si lascia.
Debbie Brown, Julie Bryce, Cathy Edwards and Sally White will be making the 1,400-mile drive to the capital of Italy in a pounds 100 Fiat Tempra in September.