Evidence map›Paper›PMID 40685556›Full record

Observational studyEuropean journal of pain (London, England)2025

Nefopam Misuse: A Cross-Sectional Study in France.

E Barat, E Lacroix, A Gillibert, B Gerard, P Brevet, R Leguillon, S Pouplin, J Grosjean, R Varin

Abstract readObservational Study
In one paragraph

Observational study in European journal of pain (London, England), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Nefopam Misuse: A Cross-Sectional Study in France.European journal of pain (London, England) · 2025
    Observational
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

9 authors.

E BaratDepartment of Pharmacy, CHU de Rouen, Rouen, France.ORCID https://orcid.org/0000-0001-5300-6244
E LacroixDepartment of Biostatistics, CHU Rouen, CEDEX, Rouen, France.
A GillibertDepartment of Biostatistics, CHU Rouen, CEDEX, Rouen, France.
B GerardDepartment of Rheumatology, CHU Rouen, CEDEX, Rouen, France.
P BrevetDepartment of Rheumatology, CHU Rouen, CEDEX, Rouen, France.
R LeguillonDepartment of Pharmacy, CHU de Rouen, Rouen, France.
S PouplinDepartment of Rheumatology, CHU Rouen, CEDEX, Rouen, France.
J GrosjeanDepartment of Digital Health, CHU Rouen, Rouen, France.
R VarinDepartment of Pharmacy, UNIROUEN, Inserm U1234, Rouen, France.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNefopam is a non-opioid analgesic. Nefopam is increasingly prescribed in contraindicated populations, raising questions about the appropriate use of nefopam. This study aimed to evaluate nefopam use in France according to age, epilepsy status and socioeconomic status.

methodsThis retrospective observational study was conducted from January 1, 2016, to December 31, 2022. Data on nefopam use in France were retrieved from the national health insurance information system.

resultsBetween 2016 and 2022, 51.8 million boxes of nefopam were dispensed to 6.5 million patients, with a mean age of 56 years and a male-to-female sex ratio of 0.6. Nefopam use increased by 121.7%, whereas codeine use and tramadol use decreased by 7% and 17% respectively, raising the market share of nefopam from 5.0% to 11.6%. Nefopam use increased 2.8-fold in patients under 15 years and 1.7-fold in patients over 65 years, after standardisation. Nefopam use increased 1.7-fold in patients with epilepsy and 1.2-fold in patients with a disadvantaged socioeconomic status. The cost of nefopam was 4.3 times higher than alternative drugs. During the period 2016-2022, 8.23% of the general population received 1 to 4 boxes of nefopam per year, 4.68% received 6 to 19 boxes per year, and 0.91% received ≥ 20 boxes per year.

conclusionsThis study highlights a widespread inappropriate use of nefopam, especially in contraindicated populations and vulnerable groups. The recent availability of the oral form in France may worsen these patterns. Close national and European monitoring is important to assess the extent of such practices and guide future regulation. SIGNIFICANCE STATEMENT: This work is a snapshot of nefopam usage in France. It sheds light on contraindicated uses (in subjects under 15 years of age or with epilepsy), not recommended uses (chronic usage, or in the elderly) and reports the usage of this treatment in the most deprived patients. This article cautions against underestimating the dangers and pitfalls of this treatment, especially in light of mounting evidence of pharmacodependence.

Indexed as

Analgesics, Non-NarcoticNefopamAdolescentAdultAgedAged, 80 and overChildCross-Sectional StudiesEpilepsyFemaleFranceHumansMaleMiddle AgedRetrospective StudiesYoung AdultAnalgesics, Non-NarcoticNefopam

Identifiers

PMID40685556
PMCPMC12277544

What Socratic holds

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LicenceCC BY
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Registered trials

None linked

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 Socratic graph.