Evidence map›Paper›PMID 7039926›Full record

ReviewClinical pharmacokinetics

Clinical pharmacokinetics of paracetamol.

J A Forrest, J A Clements, L F Prescott

2 registry-linked trialsAbstract readReview
PubMed Publisher
In one paragraph

Review in Clinical pharmacokinetics. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 143 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
143citing papers in PubMed, 1 pooled it
5.8field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT03648658 phase4unknown statusnot on this map

Pharmacokinetics and Safety of Treatment With Paracetamol in Children and Adults With Spinal Muscular Atrophy and Cerebral Palsy

TypeinterventionalSponsorMette Cathrine OerngreenRan2019 to 2024Enrolled48ConditionsSMA II, Cerebral PalsyArmsParacetamol 120Mg/5mL Oral Suspension
NCT05844995 phase1completednot on this map

An Open-label, Single-dose, Pharmacokinetic Study of Acetaminophen/Naproxen Sodium Fixed Combination Tablets in Adolescents 12 to <17 Years of Age With Orthodontic Pain

TypeinterventionalSponsorJohnson & Johnson Consumer Inc. (J&JCI)Ran2023 to 2024Enrolled24ConditionsOrthodontic PainArmsAcetaminophen/Naproxen Sodium
3 · Its place in the literature

Who cites it

143 citing papers in PubMed, 1 synthesis or guideline pooled it, 479 citations in OpenAlex.

  1. Pooled it
  2. Caffeine, but not paracetamol (acetaminophen), enhances muscular endurance, strength, and power.Journal of the International Society of Sports Nutrition · 2024
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  13. Pharmacometabonomic identification of a significant host-microbiome metabolic interaction affecting human drug metabolism.Proceedings of the National Academy of Sciences of the United States of America · 2009
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  14. Paracetamol metabolism in patients with ulcerative colitis.British journal of clinical pharmacology · 1998
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83 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

J A Forrest
J A Clements
L F Prescott
Edinburgh Royal Infirmary · GBHeriot-Watt University · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In therapeutic doses paracetamol is a safe analgesic, but in overdosage it can cause severe hepatic necrosis. Following oral administration it is rapidly absorbed from the gastrointestinal tract, its systemic bioavailability being dose-dependent and ranging from 70 to 90%. Its rate of oral absorption is predominantly dependent on the rate of gastric emptying, being delayed by food, propantheline, pethidine and diamorphine and enhanced by metoclopramide. Paracetamol is also well absorbed from the rectum. It distributes rapidly and evenly throughout most tissues and fluids and has a volume of distribution of approximately 0.9L/kg. 10 to 20% of the drug is bound to red blood cells. Paracetamol is extensively metabolised (predominantly in the liver), the major metabolites being the sulphate and glucuronide conjugates. A minor fraction of drug is converted to a highly reactive alkylating metabolite which is inactivated with reduced glutathione and excreted in the urine as cysteine and mercapturic acid conjugates. Large doses of paracetamol (overdoses) cause acute hepatic necrosis as a result of depletion of glutathione and of binding of the excess reactive metabolite to vital cell constituents. This damage can be prevented by the early administration of sulfhydryl compounds such as methionine and N-acetylcysteine. In healthy subjects 85 to 95% of a therapeutic dose is excreted in the urine within 24 hours with about 4, 55, 30, 4 and 4% appearing as unchanged paracetamol and its glucuronide, sulphate, mercapturic acid and cysteine conjugates, respectively. The plasma half-life in such subjects ranges from 1.9 to 2.5 hours and the total body clearance from 4.5 to 5.5 ml/kg/min. Age has little effect on the plasma half-life, which is shortened in patients taking anticonvulsants. The plasma half-life is usually normal in patients with mild chronic liver disease, but its prolonged in those with decompensated liver disease.

Indexed as

AcetaminophenAdministration, OralAge FactorsBody WeightDrug InteractionsFoodHumansInjections, IntravenousIntestinal AbsorptionKineticsLiver DiseasesProtein BindingRacial GroupsRectumSex FactorsAcetaminophen

Identifiers

PMID7039926
OpenAlexW2002533466

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.