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295 reviews

C15:0 for Healthy Aging

C15:0 is a good saturated fat that our cells need to stay healthy and minimize age-related cellular breakdown. fatty15 contains a patented, award-winning, vegan-friendly, isolated C15:0 form—known as FA15™.

A good saturated fat?! While even-chain fatty acids are unhealthy, science supports that odd-chain saturated fatty acids, like C15:0, actually promote healthy metabolism, balanced immunity, and heart health. Learn more

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90 Day Starter Kit

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$119.95
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30 Day Trial Kit

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$49.95
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90 Day Starter Kit

without Subscription

$149.95

90 Day Starter Kit

with Subscription

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All the good stuff

Promotes stronger and more energized cells, so you feel healthier and age smarter.

All the good stuff

Promotes stronger and more energized cells, so you feel healthier and age smarter.

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    Healthier Cells

    More energy & healthier skin*

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    Healthier Body

    Better metabolic, heart, liver & immune health*

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    Healthier Mind

    Calmer mood, deeper sleep & less snacking*

What the world is saying

What the world is saying

"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, Forbes

"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, KGTV ABC10 News

“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, New Nutrition Business

“In tests, daily oral supplementation with pure C15:0 for approximately 12 weeks supported healthier cholesterol and glucose homeostasis in obesity models and advanced hepatic form and vitality in liver disease models.”
– Vegconomist

“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. It would join omega-3 and omega-6 as the only fatty acids considered by nutrition scientists as essential.”
– Christopher Doering, FoodDive

"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 [essential] fatty acid is incredibly remarkable."
- Micki Wagner, Worth

"I'm a big believer in supplements so I was super intrigued to try Fatty 15, a supplement that is packed with good fats in order to help your cells age well from the inside out. Fatty15 uses only one ingredient: C15:0 (good fats!) to help arm your cells with what they need to age healthily.”
- Kelly Gallagher, Byrdie

"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"
- Sebastian Krawiec, Nutritional Outlook

"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, C|NET

What's it like to get wiser against age?

Read the reviews:

Customer Reviews
4.7 Based on 295 Reviews
5 ★
84% 
249
4 ★
6% 
17
3 ★
5% 
14
2 ★
2% 
7
1 ★
3% 
8
Customer Photos
Write a Review Ask a Question

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
SL
04/25/2022
Samantha L.
United States United States

I’m genuinely in disbelief by how great I feel!

Guys, it’s been 2 days after receiving my 3 month supply and I can’t believe I’m about to say this but I feel so great—rested and energized (at the same time?), but it’s a very calm and steady energy. My anxiety and depression feel at bay somehow and I feel much, much more leveled out, not my usual self that feels burned out, crashes, and drags myself across the finish line by this point of the week. I’m genuinely in disbelief by how great I feel. I rarely reach out with reviews or reactions to products I consume but wow. Just wow. I actually feel happy tears coming on. Feels so great to hear back from you guys, you have something really special going on.

DM
04/21/2022
Dena M.
United States United States

I want to thank you for your product.

I literally canceled my upcoming order of fatty 15 yesterday. I got this notice that you were going to send my upcoming order on APRIL 23. I REALLY HAD NOT NOTICED ANY DIFFERENCE AND DECIDED TO GO AHEAD AND CANCEL MY ORDER. So, today was my yearly doctors checkup which included blood work. I had done nothing different like eating healthier, exercising, etc. EXCEPT for taking fatty 15. All of my bloodwork came back remarkably better with the exception of my cholesterol which was 220. My last cholesterol # was 228 so actually it was down 8 points. All I can say is all of this points directly to me taking fatty 15 for the last 3 months. I’m a 73 year old female and I am stunned at the other results. So, PLEASE REINSTATE MY FATTY 15 ON A EVERY 3 MONTHLY BASIS. I plan to take it from here on out. I want to thank you for all this inconvenience. But mostly, I want to thank you for your product.

CR
04/04/2022
Constance R.
United States United States

They work so many things don’t.

They work so many things don’t.

HL
03/13/2022
holly l.
United States United States

I look younger than I was before taking fatty 15

My sleep quality improves tremendously, and my skin appears to be firmer and brighter. I look younger than I was before taking fatty 15.

A fatty15 Customer
CS
03/13/2022
Charles S.
United States United States

It improved my life

I already have recommended Fatty15 to my friends. My wife is starting to use it. I’m trying to get my brother to start using it and one of my good friends in Charleston, SC. I was totally prepared to take it for three months and find it did nothing to improve my life. However, that was not the case. After 45 days, I felt more calm and had lost 10 lbs without much of an effort. I don’t know if everyone will have the same outcome but for me it improved my life in noticeable ways.

Customer Reviews
4.7 Based on 295 Reviews
5 ★
84% 
249
4 ★
6% 
17
3 ★
5% 
14
2 ★
2% 
7
1 ★
3% 
8
Customer Photos
Write a Review Ask a Question

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
SL
04/25/2022
Samantha L.
United States United States

I’m genuinely in disbelief by how great I feel!

Guys, it’s been 2 days after receiving my 3 month supply and I can’t believe I’m about to say this but I feel so great—rested and energized (at the same time?), but it’s a very calm and steady energy. My anxiety and depression feel at bay somehow and I feel much, much more leveled out, not my usual self that feels burned out, crashes, and drags myself across the finish line by this point of the week. I’m genuinely in disbelief by how great I feel. I rarely reach out with reviews or reactions to products I consume but wow. Just wow. I actually feel happy tears coming on. Feels so great to hear back from you guys, you have something really special going on.

DM
04/21/2022
Dena M.
United States United States

I want to thank you for your product.

I literally canceled my upcoming order of fatty 15 yesterday. I got this notice that you were going to send my upcoming order on APRIL 23. I REALLY HAD NOT NOTICED ANY DIFFERENCE AND DECIDED TO GO AHEAD AND CANCEL MY ORDER. So, today was my yearly doctors checkup which included blood work. I had done nothing different like eating healthier, exercising, etc. EXCEPT for taking fatty 15. All of my bloodwork came back remarkably better with the exception of my cholesterol which was 220. My last cholesterol # was 228 so actually it was down 8 points. All I can say is all of this points directly to me taking fatty 15 for the last 3 months. I’m a 73 year old female and I am stunned at the other results. So, PLEASE REINSTATE MY FATTY 15 ON A EVERY 3 MONTHLY BASIS. I plan to take it from here on out. I want to thank you for all this inconvenience. But mostly, I want to thank you for your product.

CR
04/04/2022
Constance R.
United States United States

They work so many things don’t.

They work so many things don’t.

HL
03/13/2022
holly l.
United States United States

I look younger than I was before taking fatty 15

My sleep quality improves tremendously, and my skin appears to be firmer and brighter. I look younger than I was before taking fatty 15.

A fatty15 Customer
CS
03/13/2022
Charles S.
United States United States

It improved my life

I already have recommended Fatty15 to my friends. My wife is starting to use it. I’m trying to get my brother to start using it and one of my good friends in Charleston, SC. I was totally prepared to take it for three months and find it did nothing to improve my life. However, that was not the case. After 45 days, I felt more calm and had lost 10 lbs without much of an effort. I don’t know if everyone will have the same outcome but for me it improved my life in noticeable ways.

Customer Reviews
4.7 Based on 295 Reviews
5 ★
84% 
249
4 ★
6% 
17
3 ★
5% 
14
2 ★
2% 
7
1 ★
3% 
8
Customer Photos
Write a Review Ask a Question

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
SL
04/25/2022
Samantha L.
United States United States

I’m genuinely in disbelief by how great I feel!

Guys, it’s been 2 days after receiving my 3 month supply and I can’t believe I’m about to say this but I feel so great—rested and energized (at the same time?), but it’s a very calm and steady energy. My anxiety and depression feel at bay somehow and I feel much, much more leveled out, not my usual self that feels burned out, crashes, and drags myself across the finish line by this point of the week. I’m genuinely in disbelief by how great I feel. I rarely reach out with reviews or reactions to products I consume but wow. Just wow. I actually feel happy tears coming on. Feels so great to hear back from you guys, you have something really special going on.

DM
04/21/2022
Dena M.
United States United States

I want to thank you for your product.

I literally canceled my upcoming order of fatty 15 yesterday. I got this notice that you were going to send my upcoming order on APRIL 23. I REALLY HAD NOT NOTICED ANY DIFFERENCE AND DECIDED TO GO AHEAD AND CANCEL MY ORDER. So, today was my yearly doctors checkup which included blood work. I had done nothing different like eating healthier, exercising, etc. EXCEPT for taking fatty 15. All of my bloodwork came back remarkably better with the exception of my cholesterol which was 220. My last cholesterol # was 228 so actually it was down 8 points. All I can say is all of this points directly to me taking fatty 15 for the last 3 months. I’m a 73 year old female and I am stunned at the other results. So, PLEASE REINSTATE MY FATTY 15 ON A EVERY 3 MONTHLY BASIS. I plan to take it from here on out. I want to thank you for all this inconvenience. But mostly, I want to thank you for your product.

CR
04/04/2022
Constance R.
United States United States

They work so many things don’t.

They work so many things don’t.

HL
03/13/2022
holly l.
United States United States

I look younger than I was before taking fatty 15

My sleep quality improves tremendously, and my skin appears to be firmer and brighter. I look younger than I was before taking fatty 15.

A fatty15 Customer
CS
03/13/2022
Charles S.
United States United States

It improved my life

I already have recommended Fatty15 to my friends. My wife is starting to use it. I’m trying to get my brother to start using it and one of my good friends in Charleston, SC. I was totally prepared to take it for three months and find it did nothing to improve my life. However, that was not the case. After 45 days, I felt more calm and had lost 10 lbs without much of an effort. I don’t know if everyone will have the same outcome but for me it improved my life in noticeable ways.

Asked, and answered.

Because scientists seriously love questions.

  • What is fatty15?

    Fatty15 is a once daily oral supplement working to counter age-related breakdown, including strengthening cell membranes, keeping mitochondria working, and advancing cellular homeostasis.* Fatty15 contains one ingredient - pure pentadecanoic acid (C15:0).

  • What is C15:0?

    C15:0 is an odd-chain saturated fatty acid present in trace levels in whole fat dairy products and some plants and fish. A growing body of scientific evidence supports that C15:0 is the first essential fatty acid to be discovered in 90 years (there are only two other essential fatty acids, one omega-3 and one omega-6 fatty acid).† “Essential fatty acids” are nutrients that our bodies don’t make but are necessary to maintain physiological health. As such, our primary sources of essential fatty acids are food and dietary supplements.  Fatty15 offers an easy way for people to meet their essential C15:0 needs, every day.*

  • What is the benefit of taking fatty15 over just eating more dairy fat (which contains C15:0)?

    While whole-fat dairy products contain trace amounts of C15:0 (our good saturated fat), these foods also contain much higher amounts of bad saturated fats (like, C16:0) that are associated with negative health effects.* In addition, unlike dairy products, fatty15 contains pure, vegan-friendly, non-dairy, and lactose-free C15:0.

  • How long before fatty15 starts working?

    Our studies support that fatty15 starts working between 1 to 3 months of once-daily oral supplement-taking. This is why our recommended starter kit has a 90 day (3 month) supply.

  • Can I take fatty15 with other vitamins and supplements?

    Fatty15 was developed to complement your diet and current health regime. To date, no specific contraindications between fatty15 and other supplements or vitamins have been identified. Your health is our top priority, and we encourage you to talk with your healthcare provider before beginning any supplement regimen.

  • Are fatty15 supplements vegan?

    Yes, they are vegan-friendly. In addition to being vegan, our product is dairy-free, gluten-free, and in the purest form. Free of preservatives, fillers, oil, animal byproducts, corn, soy, and artificial colors.

  • Is fatty15 and its packaging environmentally friendly?

    Yes! Our top two priorities are your health and the health of the Earth. From our ingredient, to your refillable glass bottle, and even to the package on your doorstep, we designed everything with these priorities in mind. To learn more click here.

  • How does the subscription work?

    Fatty15 will come in a starter kit, containing everything you need to start improving your cellular health. In the fully recyclable (and dare we say inspiring) kit, you will receive a 90-day (3-month) supply of fatty15 capsules to be placed in your reusable glass bottle, as well as an educational insert. The starter kit has a 90 day supply because our studies support that fatty15 can take up to 3 months to achieve its initial health benefits.

Looking for more info? Here’s our full. FAQ.

Other Items

Check out some of our other essential items important for everyday life.

  • fatty15 tote bag

    Travel in style, whether heading to the store or out to enjoy natur...

    $60.00

  • fatty15 water bottle

    Stay hydrated with the fatty15 speckled copper vacuum insulated wat...

    $25.00

  • fatty15 hoodie

    This comfy and stylish fatty15 hoodie is perfect for the science bu...

    $49.95

  • fatty15 gift card

    Shopping for someone else but not sure what to give them? Give them...

    $149.95

  • fatty15 Treat Yo Cells t-shirt

    Gain some instant credibility with the fatty15 Treat Yo Cells t-shi...

    $19.95

  • fatty15 hoodie

    This comfy and stylish fatty15 hoodie is perfect for the science bu...

    $49.95

  • fatty15 Ask me about mitochondria t-Shirt

    Gain some instant credibility with the fatty15 Ask me about mitocho...

    $19.95

  • fatty15 replacement glass bottle

    Looking for an extra empty bottle to have around the house? Look no...

    $10.00

What's introductory pricing?

You’re among the first to start aging on your own terms.* And we think that calls for a celebration. So we’re offering our fatty15™ 90-day supply for $119.95 (normally $149.95). Start your subscription now to lock in the savings!

What’s included in my pre-order?

  • The Smarter Starter Kit

    1 reusable glass bottle and a 90-day supply of fatty15™.

  • The Quarterly Subscription

    A 90-day supply, delivered to your door quarterly.

  • When will I be billed?

    We'll bill you $119.95 today. Then, $119.95 every 90 days.

  • Ready to give your cells a fighting chance?

    We are too. Let’s do it!