Fatty15 is a once daily oral supplement working to counter age-related breakdown, including strengthening cell membranes, keeping mitochondria working, and naturally activates receptors throughout your body and brain to regulate immunity, metabolism, mood, appetite, and sleep.* Fatty15 contains one ingredient - pure pentadecanoic acid (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.*

C15:0 is found in trace amounts in milk fat, as well as in some types of fish and plants. Before you increase your intake of dairy fat by gobbling on loads of butter, consider this: high consumption of dairy products won’t just increase your levels of good, healthy fatty acids, it will also increase your total fat intake, including some even-chain saturated fatty acids that aren’t good for your body, as well as your total sugar intake thanks to the naturally-occurring sugar in milk, lactose.

Ends up, not all saturated fats are created equal. While scientific evidence supports broad health benefits of odd-chain saturated fatty acids (like C15:0)*, even-chain saturated fats (like C16:0) continue to be associated with negative health effects. Due to these differences, there has been a global call to action from nutritional experts to revise the dietary guidelines to better reflect the health benefits of odd-chain saturated fats, like C15:0.

FA15™ is a pure powder form of C15:0 - the only ingredient in fatty15. Developing a high quality, environmentally sustainable form of C15:0 that meets diverse dietary needs was our highest priority. The result, FA15™, is vegan-friendly and lactose-free with no preservatives, no fillers, no oil, no dairy (or other animal products), no gluten, no allergens, and no artificial colors. Simply, one ingredient that is good for you and good for the planet, too.*

Dr. Stephanie Venn-Watson, a veterinary epidemiologist, discovered the potential benefits of C15:0 while working to improve the health and welfare of older dolphins. She initially found that the healthiest aging dolphins had higher C15:0 levels in their diets.

Three years and eight studies later, Stephanie and her team were able to show that C15:0 was an active and beneficial fatty acid that was meeting the criteria of being the first essential fatty acid to be discovered in 90 years. These findings were published in the peer reviewed journal, Nature's Scientific Reports. The team developed FA15™ to provide a sustainable, pure and vegan-friendly source of C15:0 that was easy to take every day.

About a year ago, we had many (many) discussions about how to name a newly discovered saturated fat (C15:0, or pentadecanoic acid) that science now supports as the first essential fatty acid to be identified in almost 100 years. With the growing number of studies showing that higher levels of odd-chain saturated fatty acids (including C15:0) are associated with better health, we wanted to highlight "good fats" that support whole body and mind health. More information about C15:0 can be found here. 

To ensure that we provide the purest vegan-friendly ingredient to our customers, fatty15 is made from scratch (i.e. synthesized) using the highest quality assurance standards. Because our pure powder ingredient exactly matches the form of C15:0 found in nature, it is considered a natural ingredient.

Our sole ingredient in fatty15, C15:0, is GRAS (generally regarded as safe) certified, which means fatty15 is safe for children age 4+, pregnant women, nursing moms, and pretty much everyone except for infants and toddlers.

Our bodies tend to build up until we are about 30 years old. After 30, our bodies start to break down due to increasingly fragile cells, less efficient mitochondria, and imbalanced immunity and metabolism. By our 40s, these changes can result in chronic health conditions, along with more pills to address them. As we age from 65 on up, we can become increasingly fragile and fatigued.

So, taking fatty15 when you’re younger may help keep your healthy body healthy…when you’re 30 to 65, it can make your body more resilient against aging-related breakdown…and when you’re older than 65, it can work to restore some of that resilience and energy.*

We have seen consumers experience near-term benefits within the first few weeks of taking fatty15. These include: Less snacking and hunger between meals; Deeper, better quality sleep and waking up feeling more refreshed; A calmer mood, less anxiety and better ability to cope with stress; and More energy that is better sustained throughout the day.*

For longer-term benefits, 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.

Due to differences among individuals, some may feel a difference, while others may not. Rest assured, fatty15 is working hard to strengthen your cells, get your mitochondria working, and restore balance to your immunity and metabolism.* In turn, these cellular effects may make you feel more energized, less stressed, and generally healthier.* Consider fatty15 your long-term investment in you.

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.*

Given the growing scientific evidence of C15:0 as an essential fatty acid needed to maintain physiological health, fatty15 should be taken daily.*

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.

Fatty15 can be taken either with food or on an empty stomach. It is just that versatile of a supplement!

Since near-term benefits peak 4-6 hours after supplement taking, most customers take fatty15 in the morning. Others find taking fatty15 in the evening helps support their sleep. Bottom line, you can adjust your fatty15 regimen based on your needs.

Yes! Fatty15 is only 1 calorie, and since about half of fatty15's customers specifically experience less hunger between meals, it has actually helped some people get through their fasting periods.

We currently recommend that customers start with taking 1 capsule a day to support the long-term cellular health benefits of fatty15, which can take up to 3-6 months of routine use to take full effect. About 2 out of 3 customers also report at least one near-term benefit within 6 weeks of starting fatty15, including better sleep, less snacking, and a calmer mood. Some customers have opted to take 2 capsules a day (safety studies have been completed for up to 250mg - 2 1/2 capsules) and have shared that this has resulted in improved near-term benefits.

An extensive series of studies have shown that pentadecanoic acid improves cellular resilience, repairs mitochondrial function, and naturally targets receptors found throughout our bodies (called PPARs) that regulate our metabolism, immunity, mood, sleep and appetite.*

These studies also showed that daily supplementation with pentadecanoic acid promoted healthy glucose and cholesterol levels, as well as healthy liver and red blood cell function in relevant models.

Importantly, dozens of large scale population studies have linked C15:0 to better metabolic and heart health in humans.

If you want the health benefits of C15:0 but not the unhealthy saturated fats you’ll find in cows milk, full-fat butter, or other whole dairy products, taking a C15:0 supplement is the solution.

Fatty15 contains just one ingredient: pure, vegan-friendly FA15™ in pure powder form. Taking just one capsule a day can help support better health.*

We are proud to share that we go above and beyond typical supplement testing to ensure the quality of fatty15 and its only ingredient, FA15™ (our pure powder and natural form of C15:0). FA15™ is made under the absolute highest cGMP conditions at FDA-approved manufacturing facilities that are also FDA food facility registered. FA15™ is tested using validated analytical procedures verified by ICH (International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use) to confirm the purity (≥ 98%) of each and every FA15™ batch. We also assess fatty15 for six other attributes, including use of third party testing, before it is released. All this work (which is rare for a supplement) is done to ensure that we are providing you the absolute highest quality fatty15.

Fatty15 is for women, men, non-binary, trans, old, younger...pretty much anyone with cells. It is currently safe for for children 4+, men, women, pregnant women, nursing moms, and pretty much everyone except for infants and toddlers.

No. One capsule of fatty15 has less than 1 calorie. In fact, by letting fatty15 help your cells work more efficiently, your body can get busy expending energy instead of just storing it (as fat).*

Since we discovered C15:0 as an essential fatty acid in 2020 and introduced the ingredient to market in 2021, over 77,000 customers have taken fatty15 with very few side effects. While we cannot confirm that these side effects are directly attributable to C15:0 supplementation, the following have been reported in less than 0.1% of customers: constipation, diarrhea or  headache.

Our ingredient is officially GRAS (generally regarded as safe) certified, which means fatty15 is safe for pregnant women and nursing moms.

Fatty15 is encapsulated, packaged, and shipped in the good old USA.

By law, the FDA does not approve dietary supplements. However, fatty15 is manufactured in accordance to the FDA’s current Good Manufacturing Practices (cGMPs), which help ensure quality and safety.

In our commitment to make fatty15/FA15/C15:0 accessible to all, we have gone above and beyond to enforce the safety of fatty15 for those of all ages and life stages by receiving GRAS (Generally Recognized As Safe) status by the FDA.

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, oil, animal byproducts, corn, soy, and artificial colors.

Science supports that both C15:0 (the only ingredient in fatty15) and omega fatty acids (specifically alpha-linolenic acid, an omega-3; and linoleic acid, an omega-6) are essential fatty acids that can help regulate your immune system and metabolism. There are a few extra benefits of fatty15, however, including the ability for fatty15 to help keep cells resilient against aging-related breakdown; omega-3 fatty acids can actually increase your cell's susceptibility to breakdown with age. Further, omega-3s are oily, fishy smelling, require large doses, are susceptible to oxidation (in the bottle and your body), and can cause burping and stomach upset. In contrast, fatty15 is a pure powder form of C15:0 with no taste or smell, requires only a single and small 100 mg dose per day for both near- and long-term benefits, is not susceptible to oxidation, and does not cause stomach upset.

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.

No, it does not. It is a pure powder with no additives, and it has no flavor or taste.

Fatty15 capsules can be stored at room temperature (in your refillable, earth-friendly glass bottle).

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

Fatty15 capsules are smaller and easier to swallow than most supplements. 

There is a growing body of studies demonstrating associations between higher C15:0 and good health in humans.  Further, multiple lab based studies have confirmed that higher C15:0 can provide direct health benefits.* For more information about these studies and more, please click here. Clinical trials with FA15™ are in development and will soon be underway.

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.

Many supplements use fillers to completely fill each capsule.  Fatty15 contains no fillers, just 100 mg of FA15™ in a pure, powder form.  As a result, some capsules may appear to have different amounts of FA15™ in each capsule.  Specifically, 100 mg of FA15™ has the potential to fill (more or less) 50% of the capsule, depending on the way in which it is being stored, how closely the powder is packed, and the relative humidity.  This variability is normal for our pure, powder form of  FA15™.  Sometimes, however, due to automated machinery, a capsule doesn't get all the FA15™ love it needs. If you have any questions, please reach out to us via email at: info@fatty15.com.

Given the mounting science supporting C15:0 as the essential, essential fatty acid, including fatty15's demonstrated ability to repair and support your cells better, broader and safer than the leading omega-3, you may opt to use fatty15 in lieu of omega-3 fish oil supplements. One note; you should continue taking an omega-3 if prescribed by your doctor.

In our peer-reviewed study, we found that pure C15:0 (fatty15) had all of the cell-repairing benefits of the leading pure omega-3 (EPA). Further, C15:0 had an additional 26 clinically-relevant benefits. To learn more about fatty15's pure C15:0 supplements vs. marine oil omega-3 supplements, read here!

Yes. There are many reasons that people don’t take omega-3 (aka fish oil) supplements. Fish oil supplements require multiple, large pills and daily doses, cause fishy burps and gastric upset, have concerns about quality and rancidity, are typically from squeezed fish, and have mixed scientific findings, with most promising clinical trials limited to pure, pharmaceutical-grade omega-3 (EPA).

The most recent studies support that fatty15 provides better, broader and safer cellular repairing benefits compared to omega-3 (EPA), with just 1 tiny capsule a day*. Additionally fatty is an award-winning C15:0 powder ingredient that is 99% pure, vegan-friendly and stable - in the bottle and your body, without the fishy smell or taste. In addition to the longer term benefits, 2 out of 3 fatty15 customers report feeling benefits within 6 weeks.

While C15:0 is available in trace levels in food, especially whole fat dairy products, there are a few reasons why the pure C15:0 ingredient in fatty15 (FA15) can be even better for your health.

Food-based C15:0 is tied up in complex lipids called triacylglycerides, which we cannot absorb. Because of this, digestive enzymes are needed to break C15:0 down into free fatty acids, which can then be absorbed. In comparison, fatty15 provides ready-to-absorb free fatty acid C15:0.

Foods with healthy C15:0 also contain bad saturated fats. While dairy fat contains trace amounts of C15:0, these foods contain much higher levels of ‘bad’ even-chain saturated fats (like, C16:0), which come with increased calories and continue to be linked to increased risks of type 2 diabetes and heart disease. Fatty15 was made to provide only the good C15:0 fat - and only 1 calorie.

Our most common food source of C15:0 is dairy fat, which comes from animals. In comparison, the pure and award-winning C15:0 ingredient in fatty15 is vegan–friendly and has no fillers and no additives.

In addition to all of the reasons above, only our pure C15:0 ingredient in fatty15 has been extensively studied for safety and efficacy, including a recent study demonstrating the many cellular benefits of fatty15.

Fatty15, of course! It is the world’s first, and only science-backed, patented, award-winning and pure and vegan-friendly C15:0 supplement that supports your long-term health & wellness.

Great question. Fatty15 is only available to purchase through our website, fatty15.com. We are not on Amazon or in retail stores at this time.

Great question. Yes, your fatty15 purchase is eligible to be reimbursed from your HSA/FSA account. Please find our more details here.

While fatty15 is available as a subscription, we offer a 100% satisfaction guarantee with your first order for the first 30 days, and you can cancel your subscription at any time, right from the account page.

Should you decide you are not ready for a subscription, we do offer a 90-day single purchase.

With the growing body of evidence supporting FA15™ as an essential fatty acid, we recommend taking fatty15 on an ongoing basis. We will continue to deliver refills of fatty15 to your doorstep so that you can keep up your healthy regimen, worry free.

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.

For future orders, you will receive refill pouches delivered to your door. Your newly delivered cellular reinforcements (fatty15 capsules), can then be poured into your earth friendly, reusable glass bottle.

We have initially set up the auto-renewal dates for your subscription based on when you will need your replenishments (before you run out). Should you need to move your next order date, either move it up or back, you will first want to log into your account. Next, you will want to click the 'managed subscriptions' tab. Within here you can click 'edit' under the actions column. On the next screen you will see your next charge date (which is the date we will ship your next refill order). Click on 'Change next charge date' to make any modifications.

Since we are a subscription only business, we set up the frequency for you to receive your refills on a recurring basis. Our goal is for you to receive your next refill order before you run out of the capsules you have now. We have set up those intervals based on both order processing and shipment times. If you do want to change that interval, you will first want to log into your account. Next, you will want to click the 'managed subscriptions' tab. Within here you can click 'edit' under the actions column. On the next screen you will see your delivery schedule (which is the frequency that we will ship your refill orders). Click on 'change delivery schedule' to make any modifications. Remember that this change would update all future refill orders.

You can cancel your subscription at any time. Log into your account, then click "Manage Subscription". Then click on 'Subscription' along the top, and then select the subscription you would like to cancel. Finally, scroll all the way to the bottom and click on 'Cancel Subscription'. Additionally, unopened refill pouches in good condition can be returned to us, after which we will provide a refund reflecting the amount of product returned. We are unable to provide refunds for opened packages.

Our top two priorities are your health and the health of the Earth. Instead of shipping you a plastic bottle every month, we provide a refillable, reusable glass bottle that can hold up to 90 days of fatty15 capsules.

For future orders, you will receive refill pouches delivered to your door. Your newly delivered cellular reinforcements (fatty15 capsules), can then be poured into your earth friendly, reusable glass bottle.

Activating your account is an important step to managing your fatty15 journey. Try our new passwordless login here to access your account.

To create an account, click this link, use the email address you originally used to purchase fatty15 and enter a password. It’s just that easy!

Simply log into your account page to make those updates.

We wish we could have you on board forever, but we made cancelling your subscription easy. Just scroll to the very bottom of your account page, and click "Manage Account".

Yes we do. At this time we ship to Australia, Canada, Czech Republic, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Mexico, Netherlands, New Zealand, Poland, Portugal, Romania, Spain, Sweden, Switzerland and the United Kingdom. Keep checking back as we expand to a market near you.

Just send us an email at info@fatty15.com, we got you covered!

Yes.  We store this information so that we can provide you with your ongoing refills. We value customer safety, security, and privacy so you can be certain that our payment system is secure. Our site is Level 1 PCI compliant, which means we meet the highest set of security standards designed to ensure that we maintain a secure environment.

Once inventory is in stock, we ship orders to our customers in the order they were received. You will receive an email notice of when your order has shipped. If we have inventory in stock, we ship orders within 1-3 business days from the date of payment.

Once inventory is in stock, we ship orders to our customers in the order they were received. We ship coast to coast to all 50 states, and once shipped, orders should arrive at your doorstep within 5-7 day business days, hopefully sooner. For orders outside the United States, it could take up to 2-3 weeks for delivery.

We use the United States Postal Service and UPS for shipping within the United States. Outside the United States, we use local shipping carriers.

To keep shipping rates as low as possible, we compare costs between the carriers on each order and ship in the most efficient way.

We send tracking information to the e-mail address provided with your order once the item has shipped. If you have not received your tracking information and it has been over 2 business days, please feel free to reach out to us at info@fatty15.com.

You can reach us via email at anytime by contacting us at info@fatty15.com, or by calling us at ‪(619) 407-9225‬.

*By texting us, you consent to receive text messages from Fatty15 at the number you used to text and you are opting-in to receive future messages or a phone call to the number you provided. Message & Data rates may apply. Reply STOP anytime to opt-out.

Our referral program is set up as a small way to reward our fatty15 brand advocates for spreading the word of fatty15 to your family and friends. With each new customer that signs up for a subscription using your referral code, you receive a $10 off discount that is applied to your next fatty15 90-day refill. The person you refer will receive 20% off their first subscription.

Share your custom referral link with your friends and family, via email or on your social channel. For every person you get to sign up for a subscription, you receive a $10 off discount that is applied to your next fatty15 90-day refill. Your friends will receive 20% off their first subscription.

There's no limit on the number of friends you can refer to fatty15! That means unlimited earnings for you!

Just head over to the referral page, and click on the 'Join now' button. This will take you to the referral widget in the lower left corner. Copy the link and share away!

You can find the referral code by clicking on the widget in the lower right hand corner of the referral page.

You can find the discount code by clicking on the widget in the lower right hand corner of the referral page.

If you are an existing customer, your discount code will be applied to your next 90-day Refill. If you refer multiple people, you can apply all of the credits to your next refill order.

If you are a new customer, your discount code can be used on the purchase of a 90-day Subscription Starter Kit.

On the checkout page, you will see a section to enter in your discount code or gift card on the right hand side. Once you enter your unique code, click apply, and the discount will be added to your total cost.

Your referral rewards never expire. As an existing customer, feel free to save them up, and they will be used on upcoming refill orders.