Evidence map›Paper›PMID 27220803›Full record

ReviewBritish journal of clinical pharmacology2016

Palmitoylethanolamide for the treatment of pain: pharmacokinetics, safety and efficacy.

Linda Gabrielsson, Sofia Mattsson, Christopher J Fowler

2 registry-linked trialsOpen access · hybridAbstract readReview
In one paragraph

Review in British journal of clinical pharmacology, 2016. 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 100 papers.

0numbers the graph read from it
0cells of the map it votes in
100citing papers in PubMed
9.5field-weighted citation impact, top 2% 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.

NCT05317676 phase2withdrawnnot on this mapstarted 2023, after this paper: background citation

Effect of Palmitoylethanolamide on Reducing Opioid Consumption for Postoperative Pain and Inflammation Following Below Knee Fracture Fixation: A Pilot Study.

TypeinterventionalSponsorUniversity of California, IrvineRan2023 to 2025Enrolled0ConditionsTibial Fractures, Fibula Fracture, Knee FractureArmsPalmitoylethanolamide, Placebo
NCT07359534 narecruitingnot on this mapstarted 2025, after this paper: background citation

Recovery Following a Prolonged Period of Intensified Exercise Training: Evaluating the Impact of Levagen+® on Alleviating Physical, Physiological and Psychological Stress.

TypeinterventionalSponsorUniversity of WestminsterRan2025 to 2026Enrolled20ConditionsExercise RecoveryArmsLevagen+® Palmitoylethanolamide (PEA), Placebo
3 · Its place in the literature

Who cites it

100 citing papers in PubMed, 158 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Trial
  4. Trial
  5. Trial
  6. Trial
  7. Trial
  8. Trial
  9. Trial
  10. Article
  11. Article
  12. Review
  13. Article
  14. Review
  15. Palmitoylethanolamide in Human and Animal Obesity.Molecules (Basel, Switzerland) · 2026
    Review
  16. Natural Molecules for Brain Health and Resilience.International journal of molecular sciences · 2026
    Review
  17. Article
  18. Article
  19. Article
  20. Article

40 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 1 institution in 1 country.

Linda GabrielssonDepartment of Pharmacology and Clinical Neuroscience, Umeå University, SE-901 87, Umeå, Sweden.
Sofia MattssonDepartment of Pharmacology and Clinical Neuroscience, Umeå University, SE-901 87, Umeå, Sweden.
Christopher J FowlerDepartment of Pharmacology and Clinical Neuroscience, Umeå University, SE-901 87, Umeå, Sweden. cf@pharm.umu.se.
Umeå University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Palmitoylethanolamide (PEA) has been suggested to have useful analgesic properties and to be devoid of unwanted effects. Here, we have examined critically this contention, and discussed available data concerning the pharmacokinetics of PEA and its formulation. Sixteen clinical trials, six case reports/pilot studies and a meta-analysis of PEA as an analgesic have been published in the literature. For treatment times up to 49 days, the current clinical data argue against serious adverse drug reactions (ADRs) at an incidence of 1/200 or greater. For treatment lasting more than 60 days, the number of patients is insufficient to rule out a frequency of ADRs of less than 1/100. The six published randomized clinical trials are of variable quality. Presentation of data without information on data spread and nonreporting of data at times other than the final measurement were among issues that were identified. Further, there are no head-to-head clinical comparisons of unmicronized vs. micronized formulations of PEA, and so evidence for superiority of one formulation over the other is currently lacking. Nevertheless, the available clinical data support the contention that PEA has analgesic actions and motivate further study of this compound, particularly with respect to head-to-head comparisons of unmicronized vs. micronized formulations of PEA and comparisons with currently recommended treatments.

Indexed as

EthanolaminesPalmitic AcidsAmidesAnalgesicsHumansPainAmidesAnalgesicsEthanolaminespalmidrolPalmitic Acidsadverse drug reactionsclinical trialsinflammationpainPalmitoylethanolamidepharmacokinetics

Identifiers

PMID27220803
PMCPMC5094513
OpenAlexW2400751176

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.