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Ingredients

Specialized Pro-Resolving Mediators

Specialized pro-resolving mediator · SPM supplementation · SPM Active

Snapshot

IndicationsContraindications
  • Chronic pain1
  • Mood in chronic pain1
  • Exercise muscle recovery2
  • Periodontal inflammation3
  • Fish allergy4

Specialized pro-resolving mediators (SPMs) are lipid mediators made from omega-3 fatty acids, including resolvins, protectins, and maresins, that promote the resolution of inflammation rather than blocking it2, 3. Supplements are used by adults with chronic pain and for oral inflammation such as periodontitis; use for recovery from exercise-induced muscle damage is proposed but has not been tested in human trials2.

Human research is limited to about seven small trials, in chronic pain, obesity, rheumatoid arthritis, knee osteoarthritis, and healthy volunteers. An open-label, non-randomized 2020 trial in adults with chronic pain found improved quality of life, pain intensity, and mood, with no change in blood inflammatory markers1. Support for muscle recovery rests mainly on preclinical studies2. A 2025 narrative review reported that commercial SPM-enriched marine oils contain monohydroxylated precursors and low-dose eicosapentaenoic acid and docosahexaenoic acid rather than active SPMs2. United States (US) label records list 1487 products listing specialized pro-resolving mediators, with enriched marine oil the form studied; see Form comparison.

Per the one US product label reviewed, the product contains fish (anchovy and herring), so source-material allergy is the main label precaution4.

Last updated October 18, 2026. Read how we make monographs.

In the full monograph

25 sources, 15 studies

  • When to useThe situations practitioners use it for, each with the reason and the study behind it.
  • SafetyWho should avoid it, who needs extra care, and the side effects reported in studies.
  • Protocol notesThe doses used in studies, how and when they were taken, and how the forms on the market compare.
  • How it worksWhat it is and how it works in the body, in plain terms.
  • Published studiesThe studies behind each use, popular claims checked against them, and trials still under way.
  • Word of mouthWhat patients and practitioners report online, kept separate from the clinical evidence.
  • Clinical perspectiveA closing read of where the evidence is solid, where it is thin, and what has not been studied.
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Sources

  1. 1Early evidence of efficacy for orally administered SPM-enriched marine lipid fraction on quality of life and pain in a sample of adults with chronic pain.pubmed.ncbi.nlm.nih.govCallan, Hanes, Bradley · Journal of translational medicine · 2020 · Pubmed
  2. 2From Fish Oil to Resolution: A Narrative Review on the Potential of SPM-Enriched Marine Oil for Exercise-Induced Muscle Damage Recovery.pubmed.ncbi.nlm.nih.govde Souza, Moris, Gordon et al. · Nutrients · 2025 · Pubmed
  3. 3Roles of specialized pro-resolving mediators and omega-3 polyunsaturated fatty acids in periodontal inflammation and impact on oral microbiota.pubmed.ncbi.nlm.nih.govLee, Tribble · Frontiers in oral health · 2023 · Pubmed
  4. 4US product labelsdsld.od.nih.govWarnings printed on US dietary supplement labels with this ingredient, from the NIH Office of Dietary Supplements' Dietary Supplement Label Database (DSLD). Manufacturers' precautions, not evidence of harm