Urolithin A: Benefits, Research and How to Choose a Supplement

Urolithin A is one of the most talked-about compounds in healthy aging, and for good reason: it is one of the few nutrients studied in humans for its role in mitochondrial renewal. This guide explains what Urolithin A is, why most people can't get enough of it from food, what the human research actually shows, and how to choose a quality supplement.

What is Urolithin A?

Urolithin A is a postbiotic: a compound your gut bacteria make from other compounds in food. When you eat foods rich in ellagitannins and ellagic acid (pomegranates, walnuts, raspberries and strawberries), certain gut microbes convert them into urolithins. Urolithin A is the most studied of these.

The catch is that the conversion depends entirely on which bacteria live in your gut. Research suggests only around 30–40% of people produce meaningful amounts of Urolithin A from food, and production tends to fall with age. That means eating a pomegranate a day is no guarantee you'll actually get much Urolithin A from it.

Why it matters: mitochondria and mitophagy

Mitochondria are the structures inside your cells that turn food and oxygen into usable energy. Muscle cells are packed with them. Over time, mitochondria wear out, and the body relies on a recycling process called mitophagy to clear damaged mitochondria so healthy ones can take their place.

Mitophagy naturally slows down as we age. Urolithin A has attracted attention because laboratory and human studies suggest it supports this natural mitochondrial recycling process.* That's why it's often described as a "cellular energy" or "cellular renewal" compound.

What the human research shows

Unlike many trendy ingredients, Urolithin A has been tested in randomized, placebo-controlled human trials:

• First human study (2019, Nature Metabolism): healthy older adults took 250 mg, 500 mg or 1,000 mg per day. Urolithin A was well tolerated, and the 500 mg and 1,000 mg doses influenced markers of mitochondrial health in muscle and blood.
• Older adults, 4 months (2022, JAMA Network Open): adults aged 65–90 took 1,000 mg daily. The Urolithin A group showed improvements in muscle endurance in hand and leg muscle tests compared with placebo, along with changes in some blood markers linked to mitochondrial health.
• Middle-aged adults, 4 months (2022, Cell Reports Medicine): adults aged 40–64 took 500 mg or 1,000 mg daily. Participants taking Urolithin A showed improvements in leg muscle strength, and the higher dose was linked to better aerobic endurance markers.

These studies are promising but still relatively small, and results can vary from person to person. Urolithin A is not a replacement for exercise, sleep and good nutrition; it's a way to support your body's natural processes alongside them.* Urolithin A has also been the subject of a GRAS (Generally Recognized as Safe) notice submitted to the FDA for use in foods.

How much Urolithin A do you need?

Human studies have used 250 mg to 1,000 mg per day, with 500 mg and 1,000 mg being the most researched amounts. For most adults looking for a daily maintenance dose, 500 mg is a common starting point. See our full Urolithin A dosage guide for timing and how long to take it.

Urolithin A vs pomegranate juice

Could you just drink pomegranate juice instead? You can, and it's a healthy choice, but there are two problems if Urolithin A is your goal:

1. Not everyone converts it. If your gut bacteria don't produce Urolithin A, the juice won't give you much, however much you drink.
2. The amount is unpredictable. Even good "producers" make widely varying amounts. A supplement gives you a consistent, known dose every day.

How to choose a quality Urolithin A supplement

When you compare products, check:

• Dose per serving: look for 500 mg or more of Urolithin A, matching what was used in human studies. Be wary of "proprietary blends" that hide the amount.
• Purity and testing: choose brands that test every batch with an independent lab for identity, potency and contaminants.
• Manufacturing: a GMP-certified facility means the product is made under strict quality controls.
• Format: capsules are tasteless and precise; gummies are easier for people who dislike pills. Both work if the dose is right.
• Price per 500 mg: compare the cost per daily serving, not just per bottle.

Our step-by-step guide to choosing a Urolithin A supplement goes deeper on each point.

Clenvia Urolithin A options

• Urolithin A+ Capsules: 500 mg Urolithin A per 2-capsule serving, plus trans-resveratrol, green tea extract and blueberry extract. 45 servings per bottle.
• Urolithin A+ Gummies: 500 mg Urolithin A per 2-gummy serving, sugar-free strawberry flavor, vegan. 45 servings per bottle.
• Performance+: 500 mg Urolithin A with cordyceps, PEAK ATP®, beta-alanine and CoQ10 for active adults.

Not sure between gummies and capsules? Read Urolithin A gummies vs capsules.

Can you combine Urolithin A with NMN or NAD+?

Yes. Many people pair them because they support cellular energy in different ways: Urolithin A supports mitochondrial renewal, while NMN and NR are building blocks for NAD+, a molecule mitochondria need to produce energy.* Read Urolithin A vs NMN to see how they compare and whether to take both.

Who is Urolithin A for?

Urolithin A has mostly been studied in middle-aged and older adults, so it's especially popular with people who:

• Want to stay strong and active as they get older
• Exercise regularly and care about muscle health and recovery*
• Are building a healthy-aging routine alongside NAD+ support
• Know they're unlikely to make much Urolithin A from food

It is intended for adults. It isn't a substitute for a balanced diet, physical activity or medical care.

How to get the most from Urolithin A

Urolithin A works best as part of a healthy lifestyle, not instead of one. Simple habits that also support mitochondrial health include:

• Regular exercise. Both endurance and strength training are among the most powerful natural signals for building and renewing mitochondria.
• Quality sleep. Cellular repair processes are closely tied to healthy sleep.
• A diet rich in polyphenols. Pomegranates, berries, walnuts, green tea and colorful vegetables provide a range of beneficial plant compounds, even if your gut doesn't convert them into much Urolithin A.
• Adequate protein. Muscle health depends on enough protein, especially as we age.
• Consistency. Take your supplement daily. The human studies measured results after months, not days.

Common mistakes to avoid

• Taking too little. Some products contain only small amounts. Check that you're getting a meaningful dose per serving.
• Expecting overnight results. Urolithin A supports long-term cellular processes, so give it time.
• Relying on food alone. If you're not a natural "producer", pomegranate won't deliver much Urolithin A, however healthy it is.
• Skipping the basics. No supplement replaces movement, sleep and good nutrition.
• Buying untested products. Choose third-party tested supplements made in a GMP-certified facility.

Frequently asked questions

Is Urolithin A safe?

In human studies, Urolithin A at up to 1,000 mg daily for four months was well tolerated, with side effects similar to placebo. As with any supplement, talk to your healthcare professional first if you are pregnant, nursing, taking medication or have a medical condition.

How long does Urolithin A take to work?

The human studies ran for about four months. Urolithin A works on a cellular level, so it's best viewed as a long-term daily habit rather than something you'll feel overnight.

Is Urolithin A the same as ellagic acid?

No. Ellagic acid is found in foods; Urolithin A is what certain gut bacteria make from it. Taking Urolithin A directly skips the conversion step.

Should I take it with food?

Taking it with a meal is a simple way to make it part of your routine. Follow the directions on your product label.

Sources: Andreux PA et al., Nature Metabolism, 2019; Liu S et al., JAMA Network Open, 2022; Singh A et al., Cell Reports Medicine, 2022.

*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.