•  
     

    Healthy aging starts atthe cell.

    Fatty15 is a science-backed, award-winning, and pure C15:0
    supplement that supports your long-term health and wellness.*

  •  
     

    Healthy aging starts atthe cell.

    Fatty15 is a science-backed, award-winning, and pure C15:0 supplement that supports your long-term health and wellness.*

  • 2025 Inc.5000

    #1 Fastest-Growing Supplement

  • 2025 Wellbeing Awards

    Best Breakthrough Supplement

  • 2025 CNBC

    Changemaker Award

  • 2024 Fast Company

    World Changing ldea in Weliness

    Stronger cells.

    Healthier you.

    For longer.*

    When your cells thrive, so do you. Fatty15has 36+ cellular benefits that supportmetabolic, cognitive, liver, immune and redblood cell health.* The list goes on...

    Get the cellular benefits your body needs.

    Fatty15 offers a broad range of cellular benefits, all while supporting many types of cells throughout our bodies. Unlike omega-3, fatty15 strengthens cell membranes against age-driving lipid peroxidation. To boot, fatty15 has no fishy taste and works at a low dose to slow cellular aging.*

    Nerdy Science = Results You Can See & Feel

    of 6,243 fatty15 customers in a survey reported feeling or seeing benefits within 16 weeks, including:*

    Sleep support

    Healthy mood

    Improved energy

    Overall improved health

    *Based on a survey of 6,243 fatty15 customers

    Bioavailable format

    Science-backed

    Made in USA

    3rd party tested

    Scientist-founded

    Bioavailable format

    Science-backed

    Made in USA

    3rd party tested

    Scientist-founded

    Bioavailable format

    Science-backed

    Made in USA

    3rd party tested

    Scientist-founded

    Bioavailable format

    Science-backed

    Made in USA

    3rd party tested

    Scientist-founded

    Bioavailable format

    Science-backed

    Made in USA

    3rd party tested

    Scientist-founded

    Bioavailable format

    Science-backed

    Made in USA

    3rd party tested

    Scientist-founded

    Bioavailable format

    Science-backed

    Made in USA

    3rd party tested

    Scientist-founded

    Bioavailable format

    Science-backed

    Made in USA

    3rd party tested

    Scientist-founded

    Explore more voices from the scientific community

    • “Known as pentadecanoic acid, or C15:0, the dietary saturated fat found in milk, butter, fish, plants and other foods was shown in studies to demonstrate broad health benefits. lt would join omega-3 and omega-6 as the only fatty acids considered by nutrition scientists as essential.”

      Christopher Doering

    • “This discovery [by Seraphina Therapeutics] may elevate C15:0 to the ranks of now hallowed essential fatty acids omega-3 and omega-6 as well as usher in a new dialogue on changing the global guidelines for intake of dietary saturated fatty acids.”

      Karen Raterman

    • “The company has not only taken on the mantle of bringing a completely novel nutrient to market, but a larger ambition of correcting a major nutrient deficiency."

    • “Found in certain fish and plants, as well as milk and butter, [C15:0] is believed to improve immune function and strengthen heart health. Some experts hail the substance as even having anti-aging properties.”

      Ariana Eunjung Cha

    • “What began as a passion for working with animals has resulted in an entrepreneurial journey of taking the science from the bay to the lab...and developing a product that people can take to improve health on a cellular level.”

      Monica Haider

    • "When Dr. Stephanie Venn-Watson started studying dolphins at the US Navy's marine mammal program, she wasn't expecting to turn the food pyramid on its head."

      Jessica Rendall

    • "As for the future, Venn-Watson and her team had discovered about 100 molecules naturally present in the serum of both dolphins and humans, that looked like they could protect against the onset of aging-related diseases, so it is very possible we will see more to come from her team. But presently, this discovery of a new essentiall fatty acid is incredibly remarkable."

      Micki wagner

    • "For decades there has been a war on fats such as butter, whole milk, and cheese. But for the first time in 90 years, a San Diego company made an amazing discovery of a new fat, present in butter, and one your body desperately needs."

      Steve Atkinson

      •  

        We have a confession to make...

        When we started, it wasn't just about helping humans.

      We’re partners — in life and purpose.

      Two serial entrepreneurs, dedicated to service.

      Stephanie Venn-Watson,

      DVM, MPH

      CO-FOUNDER & Co-CEO

      Veterinary Epidemiologist.

      Public Health Scientist.

      40 patents + 70 peer-reviewed scientific publications.

      2 decades of leading efforts to understand and improve dolphin health.

      Eric Venn-Watson,

      MD, MBA

      CO-FOUNDER & Co-CEO

      US Navy Veteran.

      20+ years as a Military Physician.

      Launched and led 3 life science companies.

      Supports entrepreneurship programs for military Veterans in San Diego.

      Before fatty15™...

      Stephanie served as an epidemiologist tracking diseases for the Centers for Disease Control and Prevention and the World Health Organization. She co-founded the National Marine Mammal Foundation and is a recipient of the Department of Health and Human Services Secretary’s Award for Innovations in Health Promotion and Disease Prevention.

      Eric held multiple leadership roles as a US Navy military physician, with combat deployments to Iraq and Afghanistan. Experienced in growing companies with medical technologies, he was awarded the 'Best Entrepreneur' in the Startup Company Category at the Veteran and Military Conference and Awards.

      Stephanie served as an epidemiologist tracking diseases for the Centers for Disease Control and Prevention and the World Health Organization. She co-founded the National Marine Mammal Foundation and is a recipient of the Department of Health and Human Services Secretary’s Award for Innovations in Health Promotion and Disease Prevention.

      Eric held multiple leadership roles as a US Navy military physician, with combat deployments to Iraq and Afghanistan. Experienced in growing companies with medical technologies, he was awarded the 'Best Entrepreneur' in the Startup Company Category at the Veteran and Military Conference and Awards.

      Now back to the dolphins.

      Now back to the dolphins.

      To see how these human-like mammals were affected by changes in the ocean and the fish they eat, we looked at two groups:

      To see how these human-like mammals were affected by changes
      in the ocean and the fish they eat, we looked at two groups:

      San Diego, CA

      Sarasota, FL

      But even though both populations were generally
      healthy, we noticed somethingstrange.

      But even though both populations were generally
      healthy, we noticed somethingstrange.

      All-in-One Gummy for Superior Health

      A tale of two pods.

      The California Pod

      More dolphins with aging-related conditions.

      The Florida Pod

      Fewer dolphins with aging-related conditions.

      And those aging-related conditions?
      They’re the precursors to diabetes, heart disease and stroke in humans.

      So what was the difference?

      The Florida pod ate different fish than their California friends.
      Fish with higher levels of fatty acid C15:0 (aka FA15™).

      When the California pod switched to fish with higher levels of
      C15:0 (aka FA15™), their aging-related conditions stabilized and
      their cells stabilized, too.

      Mushrooms have never tasted THIS good before. Get the mushrooms you love and benefit from, without the nasty taste from powders and oils.

       
       

      From fragile to sturdy.

      After including more C15:0 (aka FA15™) in the California pod’s diet,
      we saw a 72% improvement in cellular stability.

      Mushrooms have never tasted THIS good before. Get the mushrooms you love and benefit from, without the nasty taste from powders and oils.

      So could improving the lives of

      dolphins help humans, too?

      And could helping humans...help dolphins in the wild?

      Mushrooms have never tasted THIS good before. Get the mushrooms you love and benefit from, without the nasty taste from powders and oils.

      - The consortium of scientists, doctors, dreamers and innovators
      continuously working to improve global health.

      Bottlenose dolphins are a lot like us.

      They live for a long time. They’re social and intelligent. And they can develop aging-related conditions.

      But with our fatty15 breakthrough, we’re just getting started helping both humans and dolphins age in healthier ways.*

      Read the reviews:

      • ★★★★★

        I’m A Happy Fatty15 Camper!

        I now feel like that dehydrated house plant that finally got watered! it feels like my cells are pulsing withlife force energy again. it's hard to describe all the multiple litle changes that have added up to this new found strength on so many levels. And at 70,l'm so gratefu. so, 'm a happy fatty15 camper right now and look forward to more regenerative benefits as l continue the journey of a wholesome lifestyle.

        Wendy P.

      • ★★★★★

        This Supplement Has Made A Remarkable Difference

        I've been taking Fatty-15 for close to a year, possibly sightly longe. During that time, l seem to have more energy,more initiative and a greater sense of well-being. l appreciate the rigorous and vry reassuring science backing this supplement although do find myelf wondering how is it possible one litle pill can make so much difference!

        Mishka

      • ★★★★★

        FATTY15

        I STARTED FATTY 15 ABOUT 6 MONTHS AGO ,SINCE IHAVE BEEN ON THEM I FEL SO MUCH BETTER, L HAD MY RESENT BLOOD TEST AND I SAW SO MUCH OF AN IMPROVEMENT IN MY NUMBERS.I WAS AMAZED. MY A1C NUMBERS CAME DOWN AS WELL AS CHOLESTEROL NUMBERS. MY HAIR AND SKIN LOOK SO MUCH BETTER. AT 72 YEARS OLD I FEEL THE DIFFERENCE. GIVE IT A TRY AND I HOPE IT WORKS FOR YOU AS WELL.!

        Stuart L.

      • ★★★★★

        The Only supplement!

        l had had a comprehensive lab pane! done a month or two prior to starting Faty15, which 've now been taking about 15 months. l wil soon be scheduling another identical lab panel to be taken when l return from traveling. expect o have increased positive resuits, like so many other reviewers have had. l recommended Fatty15 to all of my friends and family. it's been a game changer!

        Ramona T.

        FAQs

        What is C15:0?

        C15:0 (pentadecanoic acid) is a healthy odd-chain saturated fatty acid. Fatty15's co-founder, Dr. Steph Venn-Watson, discovered that C15:0 is not only a good fat, but that C15:0 meets the rare criteria of being the first essential fatty acid to be discovered since omega-3, which was over 90 years ago.

        In extensive peer-reviewed studies, C15:0 has been shown to support metabolic, heart, liver and immune health, as well as naturally activate receptors in our bodies that deepen sleep, reduce anxiety, and improve joint comfort.

        Essential fatty acids are nutrients that our bodies need to maintain baseline health but can't make. That means we must get these essential fats from our diet or supplements. Today, there are three known essential fatty acids: alpha-linolenic acid (an omega-3), linoleic acid (an omega-6), and now, C15:0. Because C15:0 has been shown to have 3x more cellular benefits than omega-3, C15:0 is emerging as the essential, essential fatty acid.*

        Can't l just get C15:0 from food?

        Our primary food-based source of C15:0 is whole fat cow's milk, which contains trace amounts of C15:0. Dairy fat, however, contains much higher levels of pro-inflammatory even-chain saturated fatty acids (C16:0), as well as a wallop of calories. Food-based C15:0 is also tied up in complex lipids called triacylglycerides that make C15:0 less bioavailable. We developed fatty15 to help consumers get >99.5% pure C15:0 in a vegan-friendly, science-backed and readily bioavailable form. No cows or calories needed.

        How does fatty15 compare to omega-3?

        Fatty15 (C15:0) is an odd-chain saturated fatty acid, while omega-3s are polyunsaturated fatty acids. While both are beneficial fats that support healthy immune responses, they also have very different roles. For example, fatty15 is a sturdy fat that strengthens our cell membranes and protects them against age-driving lipid peroxidation. In contrast, omega-3s are less stable fats that make our cell membranes flexible but more susceptible to oxidation, especially as we age. The bottom line: Our bodies use both C15:0 and omega-3s to stay healthy, and they can and should compliment each other. The upsides of fatty15 with pure C15:0? Tiny pills with no smell, no taste, and no burps. Better yet, when tested head-to-head against pure EPA, fatty15 had 3x more cellular benefits relevant to our immune, metabolic, heart, and liver health. We recommend working with your healthcare provider to determine what supplement stack is best for you.

        How does fatty15 protect my liver?

        Fatty15 is an award-winning and science-backed C15:0 supplement that supports your long-term health, including your liver health, at the cellular level. Numerous studies have shown that both adults and children with higher C15:0 levels have better liver health. Beyond association, fatty15 has been shown to directly protect the liver in relevant models. Specifically, fatty15 is a PPAR-α/β agonist that promotes liver health by improving the resilience of cell membranes, calming immune responses, and slowing the production of unhealthy liver tissue.*

        How does fatty15 help rebalance metabolism?

        Today, more than 50 peer-reviewed scientific studies have linked C15:0 (aka, pentadecanoic acid) to better metabolic, heart, immune and liver health. Our>99.5% pure, vegan-friendly C15:0 fatty acid in fatty15 rebalances our metabolism naturally by 1) activating PPAR-alpha and delta receptors, the master orchestrators of our metabolism, 2) activating AMPK pathways, which regulate glucose, 3) repairing mitochondria and enabling our cells to generate energy. Heck, that's a bunch of much-needed benefits to help keep our metabolism balanced.*