Urolithin A is a compound linked to mitochondrial health and healthy aging. Your body does not get it directly from food in meaningful amounts.

Instead, certain gut bacteria make it after breaking down ellagitannins from foods like pomegranate, walnuts, and berries. Because not everyone produces enough of it naturally, Urolithin A supplements have become a growing area of interest.

Key Takeaways:

• Urolithin A is made by gut bacteria from compounds found in pomegranate, walnuts, and some berries.
• Not everyone produces meaningful amounts of Urolithin A from food alone.
• Clinical studies have reported potential benefits for muscle strength, endurance, mitochondrial health, and some inflammation related markers.
• Human research looks promising, but many benefits still need more long term study.

What Is Urolithin A?

Urolithin A is a natural compound your body may make after gut bacteria break down ellagitannins from foods like pomegranate, walnuts, raspberries, and strawberries. It is mainly studied for its possible role in supporting mitochondria, which are the parts of your cells that help produce energy.

What makes Urolithin A interesting is that you do not get it directly from food in a reliable way. You first eat foods rich in ellagitannins or ellagic acid, then certain gut microbes convert those compounds into Urolithin A through several steps.

Research has found that this conversion varies a lot from person to person. In one human study, only a minority of participants had detectable Urolithin A levels at the start, and even after consuming pomegranate rich in precursor compounds, only around 40% showed meaningful levels in the blood within 24 hours (1).

That helps explain why food intake does not always translate into the same result for everyone.

How Does Urolithin A Work in the Body?

Urolithin A appears to work mainly by supporting mitophagy, which is the process your cells use to clear out worn-out mitochondria. This matters because mitochondria help power muscles, immune cells, and other tissues that need a lot of energy.

As mitochondria age, they can become less efficient. Research suggests Urolithin A may help the body recycle these damaged mitochondria and support healthier mitochondrial function over time (2).

This is one reason it has been studied in aging, physical performance, and energy-related health.

In simple terms, Urolithin A is not just being looked at as a general antioxidant. It is being studied for its possible role in helping cells maintain energy quality at the source. That is a big reason it stands out in the healthy aging space.

7 Urolithin A Benefits Backed by Research

Research on Urolithin A is still growing, but several studies have reported encouraging findings. The best human evidence so far is strongest for muscle function, mitochondrial health, and some markers linked to healthy aging.

May Support Muscle Strength

Urolithin A may support muscle strength, especially in middle-aged adults. In a clinical trial, adults who took 500 mg daily for four months showed about a 12% improvement in hamstring muscle strength (3).

That matters because muscle strength tends to decline with age, often gradually and without much notice at first.

The improvement reported in that study suggests Urolithin A may help support how muscles perform over time, possibly by improving mitochondrial efficiency inside muscle cells. It is not a substitute for exercise or protein intake, but it may be a useful area of support.

May Improve Muscle Endurance

Urolithin A may also help muscle endurance, which is slightly different from raw strength. Endurance is about how long muscles can keep working before fatiguing.

In a clinical study of older adults between ages 65 and 90, taking 1000 mg daily for four months was linked to better muscle endurance (4).

Participants showed an average increase of 95.3 contractions in hand muscles and 41.4 contractions in leg muscles, compared with much smaller changes in the placebo group. For older adults trying to stay active and independent, that kind of change could be meaningful.

May Support Exercise Performance

Some research suggests Urolithin A may support exercise performance in addition to strength and endurance. In middle-aged adults, 1000 mg daily was associated with improved total cycling distance after four months (5).

This does not mean it acts like a stimulant or gives an instant energy rush. Instead, the effect seems more connected to how the body produces and manages energy during physical activity.

Better mitochondrial function may help muscles work more efficiently, which could partly explain why exercise related performance markers improved in that study.

May Help Mitochondrial Health

Urolithin A is best known for its possible effect on mitochondria. This is one of the main reasons it is studied in healthy aging research.

Clinical studies in adults have reported improvements in biomarkers linked to mitochondrial health after supplementation.

In one human study, direct Urolithin A supplementation helped achieve more consistent levels across participants, regardless of differences in gut microbiome activity (6).

Other research in both muscle and immune cells suggests it may support mitochondrial quality control, which is the system cells use to identify and remove damaged mitochondria.

That does not mean it reverses aging, but it may support one of the processes that tends to weaken over time.

May Help Lower Certain Inflammatory Markers

Urolithin A may also help lower some markers linked to inflammation and metabolic stress. In human research, 500 mg daily was associated with lower IL-1β levels, while 1000 mg daily was associated with reductions in CRP, interferon-gamma, and TNF-alpha (7).

Some studies also reported lower levels of acylcarnitines and ceramides after supplementation. These markers are often studied in connection with inflammation, metabolic health, and cardiovascular risk.

That said, these are biomarker findings, not proof that Urolithin A treats inflammatory disease. Still, they help explain why researchers are interested in its broader effects on healthy aging.

May Support Immune Cell Function During Aging

Immune function tends to change with age, and one reason may be declining mitochondrial efficiency inside immune cells. Urolithin A has been studied here as well.

In a recent clinical trial, supplementation was associated with an increase in circulating naïve CD8+ T cells, which are immune cells that tend to decline with age (8).

Researchers also found signs that these cells appeared less exhausted. In laboratory testing, immune cells taken from participants who used Urolithin A also showed stronger bacterial clearing activity.

These findings are early, but they suggest Urolithin A may support some parts of immune cell function by helping maintain cellular energy health.

May Support Brain and Heart Health

Urolithin A may also support brain and heart health, but this part of the evidence is still earlier and more cautious than the muscle research.

For brain health, preclinical research has reported improvements in memory, learning, and markers linked to Alzheimer’s disease, including lower amyloid buildup and better mitophagy related function (9).

For heart health, newer research has reported improvements in cardiovascular biomarkers, including lower ceramides, along with encouraging preclinical findings related to cardiac function (10).

These results are interesting, but they should be viewed as promising rather than proven. Human outcome data in these areas is still more limited.

Can You Get Urolithin A from Food?

Not directly in a meaningful or reliable amount. You get precursor compounds from certain foods, and then your gut bacteria may convert those compounds into Urolithin A.

That is where things get tricky. Some people convert these compounds well, some convert them poorly, and some may produce little to none at all. Research has identified different “metabotypes,” which is just a way of describing how well someone can make urolithins from food.

Foods that provide the precursor compounds include:

• Pomegranate: One of the richest known sources of ellagitannins, with roughly 250 to 900 mg per serving depending on the form and amount.
• Walnuts: Provide a meaningful amount of ellagitannin compounds, with research reporting about 750 mg per 100 grams.
• Raspberries: Contain smaller but still useful amounts, at around 65 mg per 100 grams.
• Strawberries: Provide lower levels, with research reporting about 22.3 mg per 100 grams.
• Almonds: Also contain these compounds, with reported levels around 54.7 mg per 100 grams.

Even with these foods, the end result depends heavily on your gut microbiome. Research has found that some people consistently produce Urolithin A after eating ellagitannin rich foods, while others produce very little or none.

That is why food is still valuable, but it may not be a reliable way for everyone to reach the same Urolithin A levels.

Urolithin A Dosage: How Much Should You Take?

Clinical research has used Urolithin A in the range of 250 to 1000 mg per day, with 500 mg and 1000 mg being the most commonly studied doses.

Based on current evidence, 500 mg daily may be enough for general mitochondrial and muscle support, while 1000 mg daily has been studied for broader effects on muscle endurance, immune markers, and other aging-related biomarkers.

The right amount may depend on what you are hoping to support. Research has found that 500 mg daily was linked to improved hamstring strength after four months in middle-aged adults, while 1000 mg daily was associated with stronger effects on muscle endurance in older adults ages 65 to 90.

Human studies so far suggest this range is generally well tolerated, but it still makes sense to speak with a healthcare professional before starting, especially if you take medication or manage a health condition.

When Should You Take Urolithin A?

There is no clearly proven best time of day to take Urolithin A. Current research suggests that consistency matters more than timing, and studies have generally focused on daily use rather than a morning or evening schedule.

Clinical research has also suggested that food does not seem to meaningfully change Urolithin A bioavailability, so it can usually be taken with or without a meal.

For most people, the easiest approach is to take it at the same time each day so it becomes part of a regular routine. That may help with long-term consistency, which is likely more important than trying to fine-tune timing.

Is Urolithin A Safe?

Urolithin A appears to be generally well tolerated in short-term human studies, including trials using daily doses up to 1000 mg for about four months. So far, clinical research has not reported major safety concerns in healthy adults, but long-term data is still limited.

In one placebo-controlled trial in older adults, participants took 1000 mg daily for four months without a meaningful difference in adverse events compared with placebo (11).

Researchers also did not report major safety changes in blood work, vital signs, or organ function markers during that time. That is encouraging, but it does not answer every question about longer use.

Some people may still notice mild side effects such as bloating, nausea, or diarrhea, especially at higher doses. As with many supplements, people who are pregnant, breastfeeding, under 18, or managing liver, kidney, or complex medical conditions should talk with a healthcare professional before using it.

Final Words

Urolithin A is one of the more interesting healthy aging compounds being studied right now, mainly because of its link to mitochondrial health.

The strongest human research so far points to possible benefits for muscle strength, muscle endurance, exercise performance, and some biomarkers related to inflammation, immune function, and cellular energy.

At the same time, not everyone makes enough Urolithin A naturally from food, which helps explain why supplementation has become such a growing topic.

While the research is still developing, the early findings are promising enough to make Urolithin A worth a closer look, especially for people interested in healthy aging and mitochondrial support.

At Omre, we formulated our Urolithin A with quality and consistency in mind, so you can add it to your routine with confidence and keep things simple.

If you have been looking for a reliable way to support your mitochondria and age well, Omre Urolithin A is a practical place to start.

FAQs

What are the benefits of Urolithin A?

Research suggests Urolithin A may support muscle strength, muscle endurance, exercise performance, and mitochondrial health. Some studies have also reported changes in inflammatory markers, immune cell function, and other healthy aging-related biomarkers, though research is still ongoing.

Is Urolithin A safe to take daily?

Short-term human studies suggest Urolithin A is generally well-tolerated when taken daily within studied ranges, including up to 1000 mg per day for about four months. Even so, long-term safety is still being studied, so it is smart to check with a healthcare professional if you have a medical condition or take medication.

Can I get Urolithin A from pomegranate?

Not directly in a reliable amount. Pomegranate provides ellagitannins, which your gut bacteria may convert into Urolithin A, but that process varies a lot from person to person.

How much Urolithin A should I take?

Most human studies have used 250 to 1000 mg per day, with 500 mg and 1000 mg being the most common research doses. The best amount may depend on your goals, but 500 mg is often discussed for general support, while 1000 mg has been studied for broader muscle and biomarker-related outcomes.

Does Urolithin A help with muscle strength?

In one human trial, taking 500 mg daily for four months was associated with about a 12% improvement in hamstring muscle strength in middle-aged adults, which suggests potential support for muscle function over time.