If you've ever wondered why energy and resilience seem to fade as we age, much of the answer lives inside our mitochondria. A growing body of evidence supports that C15:0, a little-known fatty acid, may help keep these cellular engines running stronger for longer.*

What Is C15:0?

C15:0, also known as pentadecanoic acid, is an odd-chain saturated fatty acid that a growing body of evidence supports as an essential fatty acid, one our bodies need but can't make in adequate amounts on their own.*

Unlike the even-chain saturated fats more common in our diets, C15:0 gets into our cell membranes and helps strengthen them, while also supporting the stability of the mitochondria inside.*

Why Mitochondria Matter

Mitochondria are tiny organelles inside our cells that convert nutrients into ATP, the body's main energy currency, largely through a pathway called the electron transport chain. As we age, mitochondria tend to work less efficiently, producing more reactive oxygen species (ROS).

These unstable molecules can damage cells, contributing to a gradual loss of cellular energy and stability.

How C15:0 Supports Your Mitochondria

Science supports several ways C15:0 lends a hand. It helps repair mitochondrial function, in part, by supporting Complex II activity and increasing succinate levels.

This compound helps keep the energy-producing chain running, while reducing damaging mitochondrial ROS.* C15:0 also activates AMPK and the PPARα and PPARδ receptors, which help regulate metabolism and support a healthy inflammatory response, all of which point toward more resilient cells.*

Why Modern Diets Fall Short

C15:0 is found mainly in whole-fat dairy, such as whole milk, butter, and cheese. Since dietary guidance in the 1970s steered us away from whole-fat dairy, our intake of C15:0 has declined across generations. Our bodies produce only small amounts internally, so for many adults, diet alone may not be enough to restore optimal levels.

Introducing Fatty15’s C15:0 Supplement

Fatty15’s C15:0 supplement is the first and only supplement that delivers a pure, patented, vegan-friendly C15:0 ingredient in a ready-to-absorb free fatty acid form. Only one calorie, no sugars, no even-chain saturated fats bundled into dairy, just pure C15:0.

Fatty15 is supported by over 150 peer-reviewed studies and 60+ patents, third-party testing of every batch, and award-winning quality.

Of course, supplements work best alongside good habits. Regular movement, balanced nutrition, quality sleep, and stress management all reinforce mitochondrial function and may help amplify the cellular benefits C15:0 supports.* As always, it's wise to talk with your healthcare provider before starting any new supplement.