Oleocanthal is a natural phenolic compound in extra virgin olive oil that blocks the same COX enzymes as ibuprofen. It forms when fresh olives are crushed, and it is found almost nowhere else in the diet. It is the compound behind the peppery sting at the back of the throat when you swallow a fresh, early harvest oil. In laboratory studies it supports a balanced inflammatory response.

What is oleocanthal?

Oleocanthal belongs to a class of olive compounds called secoiridoids. These are found only in the olive family. Chemically, oleocanthal is a dialdehyde built on a tyrosol backbone. Its name describes it: "oleo" for olive, "canth" for sting, and "al" for aldehyde.

The olive fruit does not store oleocanthal ready-made. It forms during milling, when crushing releases enzymes that break down a larger parent compound, ligstroside. Its close sibling, oleacein, forms the same way from oleuropein.

Oleocanthal has a clear sensory signature. It irritates a receptor found mainly in the throat, not the mouth. That is why a fresh oil can taste smooth on the tongue and then make you cough. A mild, buttery oil with no sting usually contains very little oleocanthal.

How it works in the body

Cyclooxygenase (COX) enzymes make prostaglandins. Prostaglandins are signalling molecules that drive pain and inflammation. Ibuprofen works by blocking COX-1 and COX-2. Oleocanthal fits into the same enzymes and, in laboratory tests, blocks them in a dose-dependent way.

This is a targeted action. Most dietary antioxidants, such as vitamin C, simply neutralise free radicals. Oleocanthal has some antioxidant capacity, but researchers are most interested in its enzyme activity.

The dose matters. A daily serving of olive oil delivers far less oleocanthal than a tablet of ibuprofen. The interest is in steady, low-level intake over years, as in the traditional Mediterranean diet. It is a dietary compound, not a medicine.

What the research shows

The ibuprofen discovery. Researchers noticed that fresh olive oil stung the throat the same way liquid ibuprofen does. They synthesised pure oleocanthal and showed it inhibits COX-1 and COX-2 in a dose-dependent way (Beauchamp et al., Nature, 2005). They estimated that 50 g of a potent oil supplies roughly a tenth of a typical adult ibuprofen dose.

Brain clearance pathways. In cell and mouse studies, oleocanthal increased the clearance of beta-amyloid from the brain. It did this by raising levels of transport proteins at the blood-brain barrier (Abuznait et al., ACS Chemical Neuroscience, 2013). This is preclinical work. It has not been shown in people.

Cancer cells in the laboratory. In cell culture, oleocanthal damaged the lysosomes of several cancer cell lines and caused rapid cell death, while largely sparing normal cells (LeGendre et al., Molecular and Cellular Oncology, 2015). This is a laboratory finding only. It says nothing about treating any disease.

The Mediterranean diet context. The PREDIMED trial found fewer major cardiovascular events in people following a Mediterranean diet supplemented with extra virgin olive oil (Estruch et al., NEJM, 2018). It did not measure oleocanthal on its own. Read more in what the PREDIMED trials really proved.

How much is in olive oil and in Phenolia

Oleocanthal levels vary more than almost any other olive compound. Refined and "light" oils contain essentially none. Ordinary extra virgin oils often contain little. Fresh, early harvest oils can contain several hundred mg/kg.

Three factors drive the number. Green, unripe olives contain far more of the parent compounds than ripe black ones. The Greek Koroneiki cultivar is known for high secoiridoid levels. And fast, cold extraction followed by dark, cool storage protects a compound that heat, light and oxygen slowly break down.

Pomoni measures phenolic compounds by HPLC (high-performance liquid chromatography). HPLC separates each compound before measuring it, so oleocanthal is reported on its own rather than folded into a total. You can see why we prefer it in HPLC vs NMR.

Pomoni High-Phenolic Olive Oil is made from early harvest Koroneiki olives. Phenolia Daily combines high-phenolic olive oil (powdered), olive leaf extract and Greek Mountain Tea in two capsules a day. Its phenolic profile differs from liquid oil. The current batch certificate on testing and certifications lists the measured figures for each product.

Related compounds

• Hydroxytyrosol
• Oleuropein
• Oleacein
• Tyrosol
• The science of polyphenols
• HPLC vs NMR testing

Frequently asked questions

These statements have not been evaluated by the Food and Drug Administration. Pomoni products are not intended to diagnose, treat, cure or prevent any disease.

Sources

1. Beauchamp GK, Keast RSJ, Morel D, et al. Ibuprofen-like activity in extra-virgin olive oil. Nature. 2005;437:45-46. doi:10.1038/437045a
2. Abuznait AH, Qosa H, Busnena BA, El Sayed KA, Kaddoumi A. Olive-oil-derived oleocanthal enhances beta-amyloid clearance as a potential neuroprotective mechanism against Alzheimer's disease: in vitro and in vivo studies. ACS Chemical Neuroscience. 2013;4(6):973-982. doi:10.1021/cn400024q
3. LeGendre O, Breslin PAS, Foster DA. (-)-Oleocanthal rapidly and selectively induces cancer cell death via lysosomal membrane permeabilization. Molecular and Cellular Oncology. 2015;2(4):e1006077. doi:10.1080/23723556.2015.1006077
4. Estruch R, Ros E, Salas-Salvado J, et al. Primary prevention of cardiovascular disease with a Mediterranean diet supplemented with extra-virgin olive oil or nuts. New England Journal of Medicine. 2018;378:e34. doi:10.1056/NEJMoa1800389