At Core Longevity, we chose Urolithin A because it is one of the most interesting emerging compounds in modern longevity and healthy-ageing research.

Urolithin A is a compound produced when certain gut bacteria break down compounds called ellagitannins, which are found in foods such as pomegranates and some berries and nuts. However, the ability to naturally produce Urolithin A can vary considerably between individuals, which is one reason supplementation has attracted growing scientific interest.

What makes Urolithin A particularly interesting is its connection to mitophagy — the body's natural process of identifying and recycling damaged or ageing mitochondria. Because mitochondria play a central role in cellular energy production, maintaining healthy mitochondrial function is an important area of healthy-ageing research.

Human studies have investigated Urolithin A in relation to areas including mitochondrial health, muscle function and endurance. A systematic review published in Ageing Research Reviews found promising results in areas including inflammation, muscle strength and endurance, while also highlighting the need for longer-term research to better understand its potential effects on human healthspan and lifespan.

For Core Longevity, Urolithin A represents an exciting addition to the Live Longer category because it focuses on one of the fundamental areas of healthy ageing: supporting the body's natural mitochondrial maintenance and cellular recycling processes.

While Urolithin A cannot currently be said to make people live longer, the growing body of human research and its connection to mitochondrial health make it a particularly interesting supplement to explore within the wider field of healthy ageing and longevity.

Core Longevity focus: Mitochondrial health • Cellular maintenance • Energy production • Healthy ageing

Cellular Nutrition mitopure

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At Core Longevity, we chose Cellular Nutrition Mitopure Urolithin A as one of our Top 3 because of its strong focus on scientific research, ingredient quality and purposeful supplementation.

Each daily serving provides 500mg of Mitopure® Urolithin A, a proprietary and highly purified form of Urolithin A developed by Swiss longevity research company Amazentis. Mitopure is particularly interesting because it has been investigated in published human research exploring areas including mitochondrial health, cellular function and muscle performance.

One of the biggest strengths of this product from a Core Longevity perspective is the clearly identified active ingredient. Rather than simply providing a generic Urolithin A ingredient, Cellular Nutrition uses Mitopure®, a specific proprietary form with a significant scientific research programme behind it. We believe this level of transparency is important when choosing a supplement.

We also like the 500mg daily serving, as it provides a clear and meaningful amount of Urolithin A without making the dosing difficult to understand. At Core Longevity, we value straightforward products where you can clearly see what you are taking and why it is included.

The product is particularly appealing for those interested in mitochondrial health and healthy ageing. Urolithin A has attracted considerable interest because of its relationship with mitochondrial function and the body's natural cellular processes involved in maintaining healthy mitochondria.

From a Quality perspective, Mitopure® is one of the strongest aspects of the product. The ingredient has been specifically developed and researched rather than being an unidentified or generic form of Urolithin A.

From a Purity perspective, there is one consideration. The product is delivered as a softgel and therefore contains additional ingredients, including oils and capsule components required for the formulation. These ingredients have a functional purpose, but the overall formula is not as minimalist as a product containing only the active ingredient and a simple capsule.

For Core Longevity, this is an important distinction. We don't believe every additional ingredient is automatically a negative — what matters is whether it has a clear purpose. In this case, the additional components support the softgel formulation, but they do mean the product does not achieve a perfect score for our Purity principle.

Core Longevity Rating

Purity: ★★★★½ 9/10
Clean Formula: ★★★★½ 9/10
Price & Value: ★★★★½ 9/10
Verified Quality: ★★★★★ 9.5/10
Purpose: ★★★★★ 10/10

Overall: ★★★★★ 9.3/10

Core Longevity Verdict:

A high-quality and scientifically focused Urolithin A supplement built around 500mg of Mitopure® Urolithin A per daily serving. We particularly like the clearly identified proprietary ingredient, transparent dosing and strong scientific research behind Mitopure®, giving the product a particularly strong score for Quality and Purpose*.*

The softgel formulation does contain additional ingredients, including oils and capsule components, which serve a functional role in the product. However, because Core Longevity places a strong emphasis on simple and minimalist formulations, this prevents the product from achieving a perfect score for Purity and Clean Formula*.*

Overall, Cellular Nutrition Mitopure represents a strong choice for those looking for a research-focused Urolithin A supplement. Its combination of a transparent dose, clearly identified active ingredient and strong scientific foundation fits closely with the Core Longevity principles of Quality, Purity and Purpose*.*

Longevity Box Mito Surge Urolithin A

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At Core Longevity, we chose Longevity Box MitoSurge Urolithin A as one of our Top 3 because of its strong focus on purity, transparent dosing and purposeful ingredients.

MitoSurge provides 500mg of Urolithin A per daily serving, alongside 150mg of CoQ10 and 20mg of riboflavin (Vitamin B2). We like this combination because each ingredient has a clear purpose within a formula focused on mitochondrial health and cellular energy, rather than being included simply to bulk out the product.

One of the biggest reasons Longevity Box fits the Core Longevity principles is its emphasis on avoiding unnecessary ingredients. The company states that MitoSurge contains no unnecessary fillers, binders, preservatives or additives, allowing the formulation to focus primarily on active ingredients with a clear purpose.

Quality testing is another major strength. Longevity Box states that its products are manufactured in GMP-standard facilities and independently tested. Its published purity-testing information reports a greater than 99% purity result for a MitoSurge Urolithin A batch tested in February 2025, providing additional transparency around the quality of the active ingredient.

For Core Longevity, MitoSurge stands out because it offers more than a basic single-ingredient Urolithin A supplement. It combines Urolithin A with complementary active nutrients while remaining focused on clean, transparent and purposeful supplementation.

This makes it a particularly strong option for those looking for a broader formulation centred around mitochondrial health, cellular energy and healthy ageing, without adding unnecessary ingredients simply for marketing appeal.

Core Longevity Rating

Purity: ★★★★★ 9.5/10
Clean Formula: ★★★★★ 9.5/10
Price & Value: ★★★★½ 9/10
Verified Quality: ★★★★★ 10/10
Purpose: ★★★★★ 10/10

Overall: ★★★★★ 9.6/10

Core Longevity Verdict:

A high-quality and purposeful Urolithin A formula that strongly reflects the Core Longevity principles of Quality, Purity and Purpose. Longevity Box combines a transparent 500mg daily serving of Urolithin A with CoQ10 and Vitamin B2, creating a formula focused on mitochondrial health and cellular energy.

We particularly like that the additional ingredients are active nutrients with a clear and relevant purpose rather than unnecessary fillers. The company's published independent purity-testing information, including a reported result of greater than 99% purity for MitoSurge, also gives this product a particularly strong score for Verified Quality.

welzo Urolithin A

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At Core Longevity, we chose Welzo Ultra Purity MitoRenew™ Urolithin A as one of our Top 3 because it strongly reflects our principles of Quality, Purity and Purpose.

Each daily serving provides a transparent 500mg of Urolithin A. We particularly like that Welzo clearly states the amount of Urolithin A provided, rather than hiding ingredients behind a proprietary blend. This makes it straightforward to understand exactly what you are taking and how much is provided.

The formula is also relatively simple. Alongside the Urolithin A, the product uses a vegetable HPMC capsule and vegetable magnesium stearate, without added sugars, flavourings or unnecessarily complicated blends. While it is not a completely single-ingredient formula, the overall formulation remains straightforward and purposeful.

Quality assurance is another reason this product stands out. Welzo states that the product is manufactured to GMP standards and that batches undergo independent third-party laboratory testing for identity, potency and contaminants.

For Core Longevity, Welzo earns its place in our Top 3 because it combines a transparent 500mg daily serving of Urolithin A with a clean and straightforward formulation and a strong stated emphasis on product testing.

For anyone looking for a relatively minimalist approach to Urolithin A supplementation, without unnecessary sugars, flavourings or complex proprietary blends, we believe MitoRenew™ is a particularly strong option.

Core Longevity Rating

Purity: ★★★★★ 9.5/10
Clean Formula: ★★★★★ 9.5/10
Price & Value: ★★★★★ 9.5/10
Verified Quality: ★★★★★ 9.5/10
Purpose: ★★★★★ 10/10

Overall: ★★★★★ 9.6/10

Core Longevity Verdict:

A high-quality and transparent Urolithin A supplement that closely reflects the Core Longevity principles of Quality, Purity and Purpose. The clearly stated 500mg daily serving, straightforward formulation and absence of unnecessary sugars or complex proprietary blends are major positives.

We particularly like Welzo's stated commitment to third-party testing and GMP manufacturing. The inclusion of vegetable magnesium stearate means the formula is not completely single-ingredient, but it remains a clean and straightforward capsule formulation.

Urolithin A is still an emerging area of longevity research, and no supplement can currently be said to extend human lifespan. However, Welzo's transparent approach to dosing, formulation and stated quality standards makes it one of the strongest products we found for people interested in exploring this increasingly popular longevity compound.

Important Information & Disclosure

Medical Disclaimer

The information provided on Core Longevity is for general educational and informational purposes only and should not be considered medical advice. Supplements are not intended to diagnose, treat, cure or prevent any disease. Always speak with a qualified healthcare professional before starting a new supplement, particularly if you are pregnant, breastfeeding, taking medication or have an existing medical condition.

Affiliate Disclosure

Some links on Core Longevity may, in the future, be affiliate links. This means that if you choose to purchase a product through one of these links, Core Longevity may earn a small commission at no additional cost to you. Our reviews and product selections are based on our independent assessment of Quality, Purity and Purpose, not simply on whether a company offers an affiliate programme.

We believe in being transparent with our readers and will always disclose affiliate relationships where they exist.