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Cetylated Fatty Acids (CMO)
A cetylated fatty-acid ester (often sold as 'Celadrin') marketed for arthritis and joint pain. A few small RCTs — oral and topical — report improved knee range-of-motion and function, but independent systematic reviews rate the overall evidence as 'limited' or unproven.
What the evidence says
Cetyl Myristoleate doesn't have enough studies with structured effect-size data yet to pool a verdict. Browse the studies below for individual findings.
Most evidence is from medium-quality meta-analyses and randomised trials published 2002–2026 with a typical study size of 40 participants.
Based on 9 studies · 1 meta-analysis · 5 RCTs · 68 total participants
Confidence
Moderate confidenceBy outcome
A few small oral and topical RCTs report improved knee function and pain, but trials share industry ties and independent reviews rate the evidence 'limited' or unproven, keeping the score emerging.
No trials currently enrolling · 1 completed on ClinicalTrials.gov
Registered trials show research momentum for Cetyl Myristoleate, not proof of effect — a registration is a plan, and posted results are sponsor-reported, not peer-reviewed. They are never counted toward the evidence rating above.
Browse these trials on ClinicalTrials.govClinicalTrials.gov · as of Oct 2026
Cetyl myristoleate (CMO) is a fatty-acid ester first described in mice, now sold orally and as a topical cream (commonly branded Celadrin) for osteoarthritis and joint discomfort. The proposed rationale is anti-inflammatory lubrication of joint tissue, though the mechanism in humans is not well established.
The evidence base is a small cluster of trials — most notably an oral RCT (Hesslink 2002) showing improved knee flexion and function, and topical-cream studies from the Kraemer group at UConn showing reduced pain and better postural stability.
These are encouraging but small, several share authors/industry ties, and independent appraisals are cautious: a 2006 systematic review of OA nutraceuticals (Ameye) rated the evidence for cetyl myristoleate as only 'limited,' and a clinical review (Morelli 2003) flatly stated it had 'no proven clinical usefulness.' Net: a plausible, modestly-studied joint supplement that is far from established.
Cetylated fatty acids are thought to modulate joint inflammation and improve tissue lubrication, though the human mechanism is not well characterized.
Hypothesized to improve the gliding properties of joint surfaces, contributing to better range of motion.
How Cetyl Myristoleate works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.
Not studied — avoid.
Often used as an NSAID alternative; no significant interaction reported, but combining is unstudied.
Tip: Take with food
Tip: Discontinue if irritation occurs
Cetyl Myristoleate has an evidence score of 3/10 — emerging evidence based on 9 indexed studies. A cetylated fatty-acid ester (often sold as 'Celadrin') marketed for arthritis and joint pain. A few small RCTs — oral and topical — report improved knee range-of-motion and function, but independent systematic reviews rate the overall evidence as 'limited' or unproven. Representative study: PMID 16859534.
Dosing for Cetyl Myristoleate: Oral: ~350-550 mg cetylated fatty acids daily; Topical: cream applied twice daily (the oral figure is a typical label dose, no cited trial states the oral dose it used). Individual needs vary — start at the lower end of the range and adjust based on how you respond.
The best time to take Cetyl Myristoleate is with meals. Take it with food. As a fatty-acid ester, oral CMO is taken with food; topical cream is applied directly to the affected joint twice daily.
Cetyl Myristoleate is generally well-tolerated and considered safe for most healthy adults at recommended doses. Reported side effects include mild GI upset (oral), local skin irritation (topical). How often they occur is not established for all of them. Use caution if any of these apply to you: Pregnancy/breastfeeding (not studied).
PEA
Too few graded studiesNaturally occurring fatty acid that supports pain relief and reduces inflammation through the endocannabinoid system.
Collagen
Likely helpsHydrolyzed peptides that rebuild skin elasticity, reduce joint pain, and strengthen bone density — results build over 8-12 weeks.
MSM
Too few graded studiesOrganic sulfur donor for connective tissue repair — reduces joint inflammation and supports post-exercise recovery and flexibility.
White Willow Bark
Mostly mechanism / observationalNatural source of salicin (aspirin precursor) with moderate evidence for short-term low back pain relief.
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Reviewed by Dr. Baher Al Hakim · Last reviewed June 2026 · evidence from 9 studies · how we score · editorial policy
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.
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