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Types of Palmitoylethanolamide (PEA): Forms & Bioavailability

Evidence:Moderate
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This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Forms Comparison

FormBioavailabilityBest For
Micronized PEA (um-PEA)HighRecommended form — particle size reduction dramatically improves absorption and clinical efficacy
Ultra-Micronized PEAVery HighMaximum absorption — even smaller particle size; used in most clinical trials
Standard PEA PowderLowNot recommended — poor absorption due to lipophilic nature and large particle size

Micronized PEA (um-PEA)

Bioavailability: High. Best for: Recommended form — particle size reduction dramatically improves absorption and clinical efficacy.

Ultra-Micronized PEA

Bioavailability: Very High. Best for: Maximum absorption — even smaller particle size; used in most clinical trials.

Standard PEA Powder

Bioavailability: Low. Best for: Not recommended — poor absorption due to lipophilic nature and large particle size.

Full Palmitoylethanolamide (PEA) Guide

References

  1. Meta-analysisPaladini A, Fusco M, Cenacchi T, et al. (2016). Palmitoylethanolamide, a special food for medical purposes, in the treatment of chronic pain: a pooled data meta-analysis. Pain Physician. PubMed
  2. ObservationalHesselink JM, Hekker TA (2012). Therapeutic utility of palmitoylethanolamide in the treatment of neuropathic pain associated with various pathological conditions: a case series. Journal of Pain Research. DOI PubMed
  3. ReviewPetrosino S, Di Marzo V (2017). The pharmacology of palmitoylethanolamide and first data on the therapeutic efficacy of some of its new formulations. British Journal of Pharmacology. DOI PubMed
  4. Meta-analysisSchweiger V, Schievano C, Martini A, Polati L, et al. (2024). Extended Treatment with Micron-Size Oral Palmitoylethanolamide (PEA) in Chronic Pain: A Systematic Review and Meta-Analysis.. Nutrients. DOI PubMed
  5. Rao A, Erickson J, Briskey D (2025). Palmitoylethanolamide (Levagen+) for acute menstrual pain: a randomized, crossover, double-blind, placebo-controlled trial.. Women & health. DOI PubMed
  6. Meta-analysisBortoletto R, Comacchio C, Garzitto M, Piscitelli F, et al. (2025). Palmitoylethanolamide supplementation for human health: A state-of-the-art systematic review of Randomized Controlled Trials in patient populations.. Brain, behavior, & immunity - health. DOI PubMed
  7. Cornali K, Di Lauro M, Marrone G, Masci C, et al. (2025). The Effects of a Food Supplement, Based on Co-Micronized Palmitoylethanolamide (PEA)-Rutin and Hydroxytyrosol, in Metabolic Syndrome Patients: Preliminary Results.. Nutrients. DOI PubMed
Show 5 more references
  1. Invernizzi M, Mulè S, Lippi L, Galla R, et al. (2025). Evaluation of the Clinical Efficacy of a Novel Palmitoylethanolamide-Equisetum arvense Supplement for the Management of Chronic Pain: Findings from a Prospective Clinical Trial.. Medical sciences (Basel, Switzerland). DOI PubMed
  2. Cominacini M, Valenti MT, Braggio M, Caramori A, et al. (2025). Unlocking Relief: Investigating the Impact of a Fixed Combination of Acetyl-L-Carnitine and Palmitoylethanolamide on Traumatic Acute Low Back Pain.. European journal of neurology. DOI PubMed
  3. Piccolo V, Marzocchi A, Maisto M, Summa V, et al. (2025). Fixed combination of palmitoylethanolamide and melatonin in preventive therapy of migraine: results from a randomized clinical trial.. Frontiers in nutrition. DOI PubMed
  4. Didangelos T, Karlafti E, Kotzakioulafi E, Giannoulaki P, et al. (2024). Efficacy and Safety of the Combination of Palmitoylethanolamide, Superoxide Dismutase, Alpha Lipoic Acid, Vitamins B12, B1, B6, E, Mg, Zn and Nicotinamide for 6 Months in People with Diabetic Neuropathy.. Nutrients. DOI PubMed
  5. Rhodes CH, Hong BV, Tang X, Weng CY, et al. (2024). Absorption, anti-inflammatory, antioxidant, and cardioprotective impacts of a novel fasting mimetic containing spermidine, nicotinamide, palmitoylethanolamide, and oleoylethanolamide: A pilot dose-escalation study in healthy young adult men.. Nutrition research (New York, N.Y.). DOI PubMed