Caprylic Acid — answers to C8 fatty acid
Hasn’t appeared in a scanned product yet.
Talk to your doctor or pharmacist.
Roll Call does not check drug interactions or assess personal safety.
A medium-chain saturated fatty acid found naturally in coconut oil, palm kernel oil, and some dairy fat. In supplements it is sold on its own or as part of medium-chain triglyceride (MCT) blends.
Why it’s used
Taken to support gut and digestive health, sometimes marketed for antifungal or antimicrobial effects, and used as an energy source similar to other MCTs.
What the evidence says
Most evidence for antifungal or antimicrobial activity comes from laboratory and animal studies, not human trials. Human data on caprylic acid taken as a standalone supplement for any specific health outcome is sparse, so claims made for it outpace what has actually been tested in people.
Where we looked
There was no paper to cite here, so this is the search instead — run it yourself and see what we saw.
- PubMed: 6 records · searched August 2026
"Caprylic Acid"[Title/Abstract] AND ("dietary supplements"[MeSH] OR supplementation[Title/Abstract] OR supplement[Title/Abstract] OR supplements[Title/Abstract] OR "oral administration"[Title/Abstract]) AND (randomized controlled trial[pt] OR clinical trial[pt] OR meta-analysis[pt] OR systematic review[pt]) AND humans[MeSH] - PubMed: 823 records · searched August 2026
"Caprylic Acid"[Title/Abstract]
This says what this database holds under these terms. It is not a finding that no research exists.
Context
Where caprylic acid has been studied, it is usually as one component of a mixed MCT oil rather than in isolation, which makes it hard to attribute any effect specifically to caprylic acid itself.
Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.