Antipyretic

From Wikipedia, the free encyclopedia
  (Redirected from Antipyretics)
Jump to: navigation, search
Coated 200 mg tablets of ibuprofen, a common antipyretic

Antipyretics (/ænti.pˈrɛ.tɪks/, from anti- 'against' and pyretic 'feverish') are substances that reduce fever.[1] Antipyretics cause the hypothalamus to override a prostaglandin-induced increase in temperature. The body then works to lower the temperature, which results in a reduction in fever.

Most antipyretic medications have other purposes. The most common antipyretics in the United States are ibuprofen and aspirin, which are nonsteroidal anti-inflammatory drugs (NSAIDs) used primarily as analgesics (pain relievers), but which also have antipyretic properties; and acetaminophen (paracetamol), an analgesic with weak anti-inflammatory properties.[2]

There is some debate over the appropriate use of such medications, as fever is part of the body's immune response to infection.[3][4] A study published by the Royal Society claims fever suppression causes at least 1% more influenza cases of death in the United States would result in at least 700 extra deaths per year.[5]

Non-pharmacological treatment[edit]

Bathing or sponging with lukewarm or cool water can effectively reduce body temperature in those with heat illness, but not usually in those with fever.[6] The use of alcohol baths is not an appropriate cooling method, because there have been reported adverse events associated with systemic absorption of alcohol.[7]

Medications[edit]

Many medications have antipyretic effects and thus are useful for fever but not in treating illness, including:

Children[edit]

The U.S. Food and Drug Administration (FDA) notes that improper dosing is one of the biggest problems in giving acetaminophen (paracetamol) to children.[8] The effectiveness of acetaminophen alone as an antipyretic in children is uncertain, with some evidence showing it is no better than physical methods.[9] Therapies involving alternating doses of acetaminophen and ibuprofen have shown greater antipyretic effect than either drug alone.[10] One meta-analysis indicated that ibuprofen is more effective than acetaminophen in children at similar doses when both are given alone.[11]

Due to concerns about Reye syndrome, it is recommend that aspirin and combination products containing aspirin not be given to children or teenagers during episodes of fever-causing illnesses.[12][13]

Plants[edit]

Traditional use of higher plants with antipyretic properties is a common worldwide feature of many ethnobotanical cultural systems. In ethnobotany, plants with naturally occurring antipyretic properties are commonly referred to as febrifuge.[14][15]

Popular culture[edit]

Antipyretic was the word spelled by Joanne Lagatta to win the 1991 Scripps National Spelling Bee.

On the second disc for the Final Fantasy Tactics soundtrack, there is a track titled Antipyretic.

References[edit]

  1. ^ "Definition of antipyretic". Merriam-Webster Online Dictionary. Retrieved 2007-12-19. 
  2. ^ "Acetaminophen," National Center for Biotechnology Information, U.S. National Library of Medicine. Modified 2016-08-07, Accessed 2016-08-16.
  3. ^ "Mayo Clinic". 
  4. ^ "Medline Plus". 
  5. ^ Kupferschmidt, Kai (2014-01-21). "Fight the Flu, Hurt Society?". ScienceNow. 
  6. ^ "UpToDate Inc". 
  7. ^ Sullivan, J. E.; Committee On, H. C.; Sullivan, J. E.; Farrar, H. C. (2011). "Fever and Antipyretic Use in Children". Pediatrics. 127 (3): 580–587. doi:10.1542/peds.2010-3852. PMID 21357332. 
  8. ^ Reducing Fever in Children: Safe Use of Acetaminophen
  9. ^ Meremikwu M, Oyo-Ita A (2002). Meremikwu MM, ed. "Paracetamol for treating fever in children". Cochrane Database Syst Rev (2): CD003676. doi:10.1002/14651858.CD003676. PMID 12076499. Trial evidence that paracetamol has a superior antipyretic effect than placebo is inconclusive. 
  10. ^ E. Michael Sarrell, MD; Eliahu Wielunsky, MD; Herman Avner Cohen, MD (2006). "Antipyretic treatment in young children with fever: acetaminophen, ibuprofen, or both alternating in a randomized, double-blind study". Archives of Pediatrics & Adolescent Medicine. 160 (2): 197–202. doi:10.1001/archpedi.160.2.197. PMID 16461878. Retrieved 2010-09-25. 
  11. ^ Kauffman, Ralph; Sawyer, L.A.; Scheinbaum, M.L. (1992). "Antipyretic Efficacy of Ibuprofen vs Acetaminophen". Am J Dis Child. 146 (5): 622–625. doi:10.1001/archpedi.1992.02160170102024. 
  12. ^ CDC Study Shows Sharp Decline in Reye's Syndrome among U.S. Children Archived November 15, 2014, at the Wayback Machine.
  13. ^ Reye's syndrome - Prevention
  14. ^ Schultes, R.E.; Raffauf, R.F. De Plantis Toxicariis e Mundo Novo Tropicale Commentationes. XXXIX. Febrifuges of northwest Amazonia. Harvard Papers in Botany Vol. 5, pp. 52-68. 1994.
  15. ^ Biren N. Shah and Avinash K. Seth Medicinal Plants as a Source of Anti-Pyretic Agents – A Review http://scholarsresearchlibrary.com/aasr-vol2-iss3/AASR-2010-2-3-188-195.pdf