How to Choose the Best Urolithin A Supplement: Form, Amount and Testing

Key takeaways

• The best urolithin A supplement for your needs should have a clear label, a stated amount per serving, third-party testing, and an accessible batch Certificate of Analysis (CoA).

• Your gut bacteria can produce urolithin A from compounds in pomegranates, berries, and walnuts, but production varies. A urolithin A supplement provides the compound directly.

• Early clinical research has explored urolithin A and mitochondrial markers. Published trials have generally reported good tolerability, but long-term data remain limited.

• When comparing capsules, softgels, powders, and gummies, check the amount per serving, testing, and suggested use. The format alone doesn't establish product quality.

• InfiniWell’s Cellular Energy Pro combines liposomal NMN—NMN packaged in tiny fat-based carriers called liposomes—with urolithin A. Check the label for ingredient amounts and suggested use.

The best urolithin A supplement for you starts with details you can verify: a label that names urolithin A, states the amount per serving, and provides access to third-party test results.

This guide helps healthy adults compare products beyond brand rankings. You’ll learn what to check on the label, how food sources differ from supplements, which formats are available, and what the research says so far.

Urolithin A vs. pomegranate extract

Urolithin A is a compound your gut bacteria can make from ellagitannins found in foods such as pomegranates, berries, and walnuts. A urolithin A supplement provides the compound directly, without relying on that conversion.

When comparing products, check which ingredient the label lists:

• Urolithin A: The product provides urolithin A itself. Check the amount per serving.

• Pomegranate extract or an ellagitannin blend: The product provides compounds your gut bacteria may use to produce urolithin A. Conversion varies from person to person.

If you want urolithin A specifically, look for it by name on the label. Pomegranate extract alone does not establish that a product contains urolithin A.

For more guidance on reading supplement labels, see the NIH’s supplement buying guide.

What urolithin A research tells us

Researchers are studying urolithin A in relation to mitochondrial function and mitophagy, the process cells use to remove damaged mitochondria. Mitochondria help turn nutrients into usable energy, making them central to cellular energy production.

The type of research affects what you can conclude:

• Laboratory and animal research: Studies have explored how urolithin A affects mitophagy. These findings help explain a possible mechanism but don't establish the same benefits in people.

• Lifespan research in worms: A 2016 laboratory study found that worms given urolithin A lived approximately 45% longer than controls. This finding does not establish a lifespan benefit in humans.

• Human cell research: A separate four-week human trial compared 1,000 mg of urolithin A daily with placebo in 50 healthy middle-aged adults. Researchers reported changes in certain immune-cell populations and aspects of immune-cell metabolism and function. These early findings describe specific laboratory measures of the immune system.

• Human clinical studies: Trials in middle-aged adults and older adults have examined mitochondrial markers and measures of muscle function. Findings vary by outcome, and the clinical evidence continues to develop.

When comparing products, ask what the research measured, who participated, and whether the ingredient and amount studied match the product’s label. Research on one formulation doesn't automatically establish results for another.

For more background, read our guide to mitochondrial health supplements. You can also review ingredient labels in our healthy aging supplements collection.

Can you get urolithin A from food?

Foods such as pomegranates, berries, and walnuts provide compounds your gut bacteria can convert into urolithin A.

Your gut microbiota, the community of microorganisms in your gut, influences this conversion. The bacteria present vary from person to person, so eating the same foods does not mean everyone will produce urolithin A in the same amounts.

A urolithin A supplement provides the compound directly, in its finished form. It does not replace the nutritional value of a varied diet.

How to choose a urolithin A supplement

Start with the ingredient list, then check serving details, testing, and the research behind the formula.

Confirm the ingredient

Look for “urolithin A” on the label. Pomegranate extract or an ellagitannin blend provides starting compounds your gut bacteria may convert into urolithin A.

Check the amount and serving size

The label should state how much urolithin A each serving provides and how many capsules, softgels, or scoops make up that serving. Check the number of servings to estimate how long the bottle will last. Follow the product’s suggested use.

Request a batch Certificate of Analysis

A batch-specific CoA reports results for the sample tested. Check that the batch number matches your bottle and review which tests were performed, such as ingredient identity, purity, and contaminants.

Our guide explains how to read a Certificate of Analysis.

Review testing and manufacturing standards

Look for independent testing and clear information about current Good Manufacturing Practices (cGMP). Ask which laboratory performed the testing and whether the results are available.

Check what “clinically tested” refers to

If a brand uses “clinically tested,” check whether it refers to the finished product or an ingredient. Look at the formulation, amount studied, participants, and outcomes measured.

The clinical evidence should be relevant to the claim. An ingredient study does not automatically establish the same results for every product containing it.

Read the full formula

Some products pair urolithin A with NMN or other ingredients. Compare the full formula with any supplements you already take to check for overlapping ingredients.

NMN and urolithin A are different compounds, but some formulas combine them. InfiniWell’s Cellular Energy Pro, for example, contains liposomal NMN and urolithin A. If you're also comparing NMN products, see our guide on how to choose an NMN supplement.

Which form should you choose?

Compare the amount per serving, testing, and how each format fits your routine. If a brand claims better absorption or results, check for research supporting that specific formulation.

For combination products, read delivery claims carefully. A label describing liposomal NMN does not establish that the urolithin A is also liposomal.

Is urolithin A safe?

Published human trials have generally reported urolithin A as well tolerated among the adults studied. Long-term safety data remain limited, and individual responses may vary.

Talk to a qualified healthcare professional before starting a urolithin A supplement, especially if you are pregnant, breastfeeding, or taking medication.

Ready to compare formulas? Review Cellular Energy Pro’s ingredient details, including the amounts per serving and suggested use, to help inform your choice.