Clinical data
Tred namesTylenol (USA), Anacin Aspirin Free (USA), Apra (USA), Crocin (Indie), Feverall (USA), Genapap (USA), Panadol (UK), Panadol (Australie), Panodil (Denmark), Efferalgan (Fraunce), Doliprane (Fraunce) Dafalgan (Fraunce) Alvedon (Swaden)
Leecence data
  • US Acetaminophen
  • AU: A
  • US: B (Na risk in non-human studies)
  • safe
Routes o
Oral, rectal, intravenous
ATC code
  • WHO)
Legal status
Legal status
  • AU: Unscheduled
  • UK: General sales leet (GSL, OTC)
  • US: OTC
Pharmacokinetic data
Metabolism90 tae 95% Hepatic
Biological hauf-life1–4 h
CAS Nummer
PubChem CID
ECHA InfoCard100.002.870
Chemical and physical data
Molar mass151.17 g/mol
3D model (Jmol)
Density1.263 g/cm3
Meltin pynt169 °C (336 °F) [2][3]
Solubility in watter12.78[1] mg/mL (20 °C)

Paracetamol INN (l/ or l/), or acetaminophen USAN Listenin/, chemically named N-acetyl-p-aminophenol, is a widely uised ower-the-coonter analgesic (pain reliever) an antipyretic (fever reducer).

Paracetamol is classified as a mild analgesic. It is commonly uised for the relief o heidaches an ither minor aches an pains an is a major ingredient in numerous cauld an flu remedies. In combination wi opioid analgesics, paracetamol can an aa be uised in the management o mair severe pain such as post-surgical pain an providin palliative care in advanced cancer patients.[4] Though acetaminophen is used tae treat inflammatory pain, it is nae generally classified as an NSAID acause it exhibits anly weak anti-inflammatory activity.

The onset o analgesia is approximately 11-29.5 minutes efter oral admeenistration o paracetamol, an its hauf-life is 1–4 oors. While generally safe for uise at recommendit doses (1,000 mg per single dose an up tae 4,000 mg per day for adults),[5] acute owerdoses o paracetamol can cause potentially fatal kidney, brain an liver damage an, in rare individuals, a normal dose can dae the same. The risk mey be hichtened bi chronic alcohol abuse. Paracetamol toxicity is the foremost cause o acute liver failure in the Wastren warld, an accoonts for maist drug owerdoses in the Unitit States, the Unitit Kinrick, Australie an New Zealand.[6][7][8][9]

It is the active metabolite o the coal tar–derived phenacetin, ance popular as an analgesic an antipyretic in its awn richt. However, unlike phenacetin an its combinations, paracetamol is nae considered carcinogenic at therapeutic doses.[10] The wirds acetaminophen (uised in the Unitit States,[11] Canadae, Japan, Sooth Korea, Hong Kong, an Iran) an paracetamol (uised elsewhaur) baith come frae a chemical name for the compoond: para-acetylaminophenol an para-acetylaminophenol. In some contexts, it is simply abbreviated as APAP, for acetyl-para-aminophenol.


  1. Granberg RA, Rasmuson AC (1999). "Solubility of paracetamol in pure solvents". Journal of Chemical & Engineering Data. 44 (6): 1391–95. 10.1021/je990124v. 
  2. Karthikeyan, M.; Glen, R. C.; Bender, A. (2005). "General Melting Point Prediction Based on a Diverse Compound Data Set and Artificial Neural Networks". Journal of Chemical Information and Modeling. 45 (3): 581–590. 10.1021/ci0500132. 15921448. 
  3. "melting point data for paracetamol". Retrieved 19 March 2011. 
  4. Scottish Intercollegiate Guidelines Network (SIGN) (2008). "6.1 and 7.1.1". Guideline 106: Control of pain in adults with cancer (PDF). Scotland: National Health Service (NHS). ISBN 978 1 905813 38 4. 
  5. Acetaminophen
  6. Daly FF, Fountain JS, Murray L, Graudins A, Buckley NA (2008). "Guidelines for the management of paracetamol poisoning in Australia and New Zealand—explanation and elaboration. A consensus statement from clinical toxicologists consulting to the Australasian poisons information centres". Med J Aust. 188 (5): 296–301. 18312195. 
  7. Khashab M, Tector AJ, Kwo PY (2007). "Epidemiology of acute liver failure". Curr Gastroenterol Rep. 9 (1): 66–73. 10.1007/s11894-008-0023-x. 17335680. 
  8. Hawkins LC, Edwards JN, Dargan PI (2007). "Impact of restricting paracetamol pack sizes on paracetamol poisoning in the United Kingdom: a review of the literature". Drug Saf. 30 (6): 465–79. 10.2165/00002018-200730060-00002. 17536874. 
  9. Larson AM, Polson J, Fontana RJ, et al. (2005). "Acetaminophen-induced acute liver failure: results of a United States multicenter, prospective study". Hepatology. 42 (6): 1364–72. 10.1002/hep.20948. 16317692. 
  10. Bergman K, Müller L, Teigen SW (1996). "The genotoxicity and carcinogenicity of paracetamol: a regulatory (re)view". Mutat Res. 349 (2): 263–88. 10.1016/0027-5107(95)00185-9. 8600357. 
  11. Bradley, N (1996). "BMJ should use "paracetamol" instead of "acetaminophen" in its index". BMJ. 313 (7058): 689. 2351967Freely accessible. 8811774. 
Other Languages
Afrikaans: Parasetamol
العربية: باراسيتامول
asturianu: Paracetamol
تۆرکجه: استامینوفن
български: Парацетамол
বিষ্ণুপ্রিয়া মণিপুরী: প্যারাসিটামল
bosanski: Paracetamol
català: Paracetamol
کوردی: پانادۆڵ
čeština: Paracetamol
Cymraeg: Paracetamol
Deutsch: Paracetamol
ދިވެހިބަސް: ޕެރަސެޓަމޯލް
Ελληνικά: Παρακεταμόλη
English: Paracetamol
Esperanto: Paracetamolo
español: Paracetamol
euskara: Parazetamol
français: Paracétamol
Nordfriisk: Paracetamol
galego: Paracetamol
עברית: פרצטמול
hrvatski: Paracetamol
magyar: Paracetamol
հայերեն: Պարացետամոլ
Bahasa Indonesia: Parasetamol
íslenska: Parasetamól
italiano: Paracetamolo
қазақша: Парацетамол
lingála: Paracétamol
lietuvių: Paracetamolis
latviešu: Paracetamols
македонски: Парацетамол
Bahasa Melayu: Parasetamol
नेपाल भाषा: पारासिटामोल
Nederlands: Paracetamol
occitan: Paracetamòl
polski: Paracetamol
português: Paracetamol
română: Paracetamol
русский: Парацетамол
srpskohrvatski / српскохрватски: Paracetamol
Simple English: Paracetamol
slovenčina: Paracetamol
slovenščina: Paracetamol
српски / srpski: Paracetamol
Basa Sunda: Parasetamol
svenska: Paracetamol
Türkçe: Parasetamol
українська: Парацетамол
Tiếng Việt: Paracetamol
粵語: 撲熱息痛