Best Urolithin A for Over-50s

Reviewed by SOMA HEALTH's Medical Research Team

If you are over 50 and reading about urolithin A, you are almost certainly asking one practical question: can it help me hold on to strength and stay energetic as the years add up? Here is an honest, evidence-first look at what the human research actually shows, where the science is still early, and how to choose well.

Why the 50-plus body is a sensible place to start

From roughly midlife onward, two changes quietly compound. Muscle mass and muscle quality drift downward, a gradual process clinicians call sarcopenia, and the mitochondria inside our cells become less efficient at turning fuel into usable energy. Mitochondria are the small power plants inside every cell, most densely packed in muscle, and cells rely on a housekeeping process to identify worn or damaged mitochondria and recycle them. That recycling process is called mitophagy. Research suggests mitophagy tends to slow with age, which means older, less efficient mitochondria linger longer than they should. This is the biology urolithin A is designed to touch, and it is why the compound has been studied most heavily in exactly the age band reading this page.

What urolithin A is, in plain terms

Urolithin A is not something plants make directly. It is a gut postbiotic: your gut bacteria produce it from ellagitannins, the parent compounds found in pomegranate, walnuts, and certain berries. The catch, and it is a meaningful one, is that only some people carry the microbiome needed to make useful amounts. Studies estimate a substantial share of adults convert little to none, regardless of how much pomegranate they eat. That variability is the central argument for a standardized supplement: it delivers a consistent, measured amount of urolithin A rather than leaving the outcome to the lottery of your gut flora. You can read our fuller primer in the urolithin A guide.

The proven human evidence: safety and muscle

The most established human findings sit in two areas, safety and muscle function, and both matter to a 50-plus reader.

Safety came first (human)

The first-in-human work, Andreux and colleagues published in Nature Metabolism in 2019, established that urolithin A was safe and well tolerated in healthy adults at single doses up to 1,000 mg per day, and it produced a measurable shift in mitochondrial gene expression, an early biological signal that the compound was doing something at the cellular level. Safety is the foundation everything else is built on, and it is genuinely reassuring for anyone considering daily use.

Muscle endurance in older adults (human)

A randomized controlled trial by Liu, D'Amico and colleagues, published in JAMA Network Open in 2022, studied older adults over roughly four months and reported improvements in measures of muscle endurance. This is the study that speaks most directly to the over-50 shopper, because it was run in older adults rather than young athletes.

Strength and exercise performance in midlife (human)

Singh and colleagues, in Cell Reports Medicine in 2022, tested middle-aged adults over four months using both 500 mg and 1,000 mg daily arms and reported benefits in muscle strength and aspects of exercise performance. Taken together with the endurance trial, these give urolithin A a small but real human evidence base for muscle in aging bodies, which is uncommon among longevity-adjacent ingredients.

Newer human research: immunity and trained adults

The picture is still filling in, and 2024-2025 added useful pieces. A 2025 randomized controlled trial in Nature Aging, run over about 28 days, reported that urolithin A supported the mitochondrial health of immune cells in midlife adults, a finding relevant to the low-grade inflammation that tends to accompany aging, sometimes called inflammaging. Separately, an eight-week randomized trial in the Journal of the International Society of Sports Nutrition in 2024 studied resistance-trained men, and a 2025 trial examined distance runners. These newer studies broaden the population and endpoints, though they remain shorter or narrower than the core muscle trials. For a plain-language walk through the trials, see our clinical studies overview.

The preclinical foundation: promising, but not proof

Much of the excitement around urolithin A traces back to laboratory and animal work, which should be read as mechanism and hypothesis rather than human proof. The landmark preclinical paper, Ryu and colleagues in Nature Medicine in 2016, showed that urolithin A stimulated mitophagy, extended lifespan in the roundworm C. elegans, and improved muscle measures in rodents. That is a compelling mechanistic story and it is why the human trials were pursued, but worms and mice are not people. Preclinical research in osteoarthritis models, D'Amico and colleagues in Aging Cell in 2022, has explored joint and cartilage effects, and early or preclinical research is also exploring skin, gut, brain, and heart pathways. None of that is settled in humans, and a 2024 systematic review in Ageing Research Reviews on targeting aging with urolithin A concluded, fairly, that the human evidence is still emerging.

Practical guidance for the over-50 reader

A few honest points. First, urolithin A is not a substitute for the two things that most reliably preserve strength after 50: regular resistance training and adequate protein. Think of it as a possible complement to those, not a replacement. Second, the human muscle studies ran for roughly four months, so patience is warranted; this is not a next-day sensation. You can read more on timelines in how long urolithin A takes to work and on amounts in our dosage guide. Third, the studied range is 500 to 1,000 mg per day, with 1,000 mg at the top; the SOMA HEALTH serving sits at that upper researched amount. Finally, if you take medication or manage a health condition, talk with your doctor before starting. Urolithin A is a structure and function supplement intended to support normal cellular processes; it is not a treatment for sarcopenia or any disease, and it should not replace care from a qualified provider.

*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.