Urolithin A with Omega-3
Fish oil is one of the most common supplements in the world, and urolithin A is one of the newest. Pairing them is a reasonable idea for people building a daily routine around cellular and metabolic health. Here is how the two fit together, what human evidence actually supports for each, and where the science is still early.
Two different jobs in the same routine
Omega-3s and urolithin A are often mentioned in the same breath because both are studied in the context of aging, muscle, and mitochondrial health. But they are not interchangeable, and they do not do the same thing. Understanding the distinction is the first step to stacking them sensibly.
Omega-3 fatty acids — chiefly EPA and DHA from fish oil — are structural and signaling fats. They are incorporated into cell membranes throughout the body and act as precursors to specialized molecules involved in resolving inflammation. Urolithin A works differently. It is a gut postbiotic: your microbiome produces it when it breaks down ellagitannins, the compounds found in pomegranate, walnuts, and some berries. Urolithin A is studied for its support of mitophagy, the housekeeping process by which cells identify and recycle worn-out mitochondria so that healthier ones can take their place. In short, omega-3s supply and signal; urolithin A supports cellular maintenance. Those roles are complementary rather than redundant, which is part of why people run them together.
What the human evidence shows for urolithin A
Proven in humans (foundational safety and mechanism). The first-in-human work on urolithin A was published by Andreux and colleagues in Nature Metabolism in 2019. It reported that urolithin A was safe and well tolerated at single doses up to 1,000 mg per day, and that it shifted a mitochondrial gene-expression signature in the direction seen with improved mitochondrial function. That study established the safety envelope the field still works within.
Newer human trials (muscle and performance). Two randomized trials extended the picture. Singh and colleagues (Cell Reports Medicine, 2022) tested 500 mg and 1,000 mg per day for four months in middle-aged adults and reported improvements in measures of muscle strength and exercise performance. Liu, D'Amico and colleagues (JAMA Network Open, 2022) studied older adults over roughly four months and found support for muscle endurance. A 2024 trial in resistance-trained men (Journal of the International Society of Sports Nutrition) and a 2025 trial in distance runners have continued to probe performance-related outcomes. Most recently, a 2025 randomized study in Nature Aging reported that a roughly 28-day course supported immune-cell mitochondrial health in midlife adults, a finding relevant to the low-grade inflammation of aging often called inflammaging.
It is worth being candid about the state of this literature. A 2024 systematic review in Ageing Research Reviews, titled ‘Targeting aging with urolithin A in humans,’ concluded that the human evidence is still emerging. The trials are relatively short and modest in size. Urolithin A is a promising compound with a clean safety record so far, not a settled therapy. You can read our fuller summary of the trials on our clinical studies page.
Preclinical (label as such). The mechanistic groundwork for urolithin A comes from laboratory work. Ryu and colleagues (Nature Medicine, 2016) showed that urolithin A induced mitophagy, extended lifespan in the worm C. elegans, and improved muscle function in rodents. These are animal and cell findings; they explain why urolithin A might matter but do not, on their own, prove human outcomes.
What the human evidence shows for omega-3s
Omega-3s have a much longer research history, and it is genuinely mixed. Large reviews, including Cochrane analyses, have found that omega-3 supplements have little consistent effect on overall cardiovascular events in broad populations, tempering earlier optimism. At the same time, high-dose prescription EPA has shown benefit in specific high-risk groups, and omega-3s remain relevant to triglyceride levels and are a recognized way to raise intake of EPA and DHA when dietary fish is limited. Interestingly for this pairing, a 2023 human study reported that EPA and DHA supplementation improved markers of immune-cell mitochondrial function and inflammation in people with obesity — a mitochondrial angle that sits alongside, though it does not merge with, the urolithin A research. The honest summary: omega-3s are well studied and reasonable for many people, but they are not a universal fix, and benefits depend heavily on your starting diet and health status.
How to take them together
There is no known interaction between urolithin A and omega-3s, and no reason they cannot share a routine. A few practical points make the combination smoother.
Take both with a meal that contains fat
Urolithin A is fat-soluble, and absorption tends to improve when it is taken with food rather than on an empty stomach. Fish oil is itself a fat and is also best taken with a meal to reduce the chance of fishy reflux. That makes a single fat-containing meal — breakfast or dinner — a convenient anchor for both. Our guide to taking urolithin A covers timing in more detail.
Keep urolithin A at a studied dose
Human trials used 500 to 1,000 mg of urolithin A per day, with 1,000 mg being the top of the studied range. Adding omega-3s does not change that; you do not need more urolithin A because you are also taking fish oil. Choose a fish oil dose based on your own diet and your clinician’s guidance, since omega-3 needs vary widely.
Mind the practical details
Fish oil at higher doses can have a mild blood-thinning effect, which matters if you take anticoagulant medication or have surgery scheduled. That is a conversation for your doctor, not something to manage by guesswork. Urolithin A, by contrast, has not shown that effect in trials, but it has only been studied for months, not years.
Where the two ideas connect — and where they don’t
The tempting narrative is that omega-3s and urolithin A both ‘support mitochondria,’ so together they must be better. Be careful with that logic. The mitochondrial signals for the two compounds come from different kinds of evidence and different mechanisms, and no human trial has tested them as a combined product against either one alone. So the reasonable claim is modest: each is independently studied for aspects of cellular and muscle health, and there is no conflict in taking them together as part of a broader routine that also includes protein, resistance exercise, and sleep. What we cannot say is that the combination multiplies any single benefit. Anyone promising that is ahead of the data. For the bigger picture on why mitochondria matter, see our overview of mitochondrial health.
Not a treatment. Neither urolithin A nor omega-3s is a treatment for heart disease, muscle-wasting conditions, or any other diagnosed illness, and nothing here is medical advice. If you have a health condition, take prescription medication, are pregnant or nursing, or are considering supplements to address a specific concern, talk with your doctor before starting.
Frequently asked questions
Can I take urolithin A and fish oil at the same time?
Yes. There is no known interaction, and both are fat-soluble, so taking them together with a meal that contains fat is a sensible approach. Fish oil is best taken with food anyway to reduce fishy reflux.
Does omega-3 make urolithin A work better?
There is no human trial testing the two as a combined product, so we cannot claim they enhance each other. Each is independently studied for aspects of muscle and cellular health. Taking them together is reasonable, but do not expect a multiplied effect.
Do they both support mitochondria?
Both have been discussed in a mitochondrial context, but through different mechanisms and different kinds of evidence. Urolithin A is studied for supporting mitophagy; some omega-3 research has looked at immune-cell mitochondrial markers. They are complementary, not the same.
How much of each should I take?
Urolithin A has been studied at 500 to 1,000 mg per day, with 1,000 mg the top of the range. Omega-3 needs vary a lot by diet and health status, so choose a fish oil dose with your clinician’s input.
Is there any reason not to combine them?
The main caution is with fish oil, not urolithin A: at higher doses omega-3s can have a mild blood-thinning effect, which matters if you take anticoagulants or have surgery planned. Check with your doctor in those cases.
Which should I take if I can only take one?
That depends on your goals and diet, and it is a good question for your healthcare provider. Someone who eats little fish may prioritize omega-3s; someone focused on the mitophagy research may prioritize urolithin A. They address different things.
How long until urolithin A does anything?
The human muscle trials ran about four months, so think in terms of consistent daily use over weeks to months rather than days.
New to the compound? Start with our complete urolithin A guide, or compare formats and brands on our best urolithin A gummies roundup.
Shop SOMA HEALTH Urolithin A Gummies — 1,000 mg daily*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This guide is educational and is not a substitute for advice from a qualified healthcare provider.
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