ProHealth Urolithin A Review

ProHealth Longevity is one of the more established names in the healthy-aging supplement space, and its Full Spectrum Urolithin A capsule is a product shoppers ask us about often. This review judges it the way we would judge any urolithin A supplement: on dose, testing, format, and value, using the same objective criteria we apply to our own product.

Transparency note: SOMA HEALTH sells a competing urolithin A product, so treat this as an informed but interested perspective. We have kept the criteria objective and have not stated ProHealth's specific price or dose unless we could verify it during this review. The label details below were checked against a current retail listing in October 2026; formulations change, so confirm against the bottle you buy.

What urolithin A actually is, briefly

Before grading any brand, it helps to be clear on what you are buying. Urolithin A is a gut postbiotic. Your body does not get it directly from food; instead, your gut microbiome converts ellagitannins and ellagic acid, found in pomegranate, walnuts, and certain berries, into urolithin A. The catch is that only some people carry the microbial species that perform this conversion efficiently, which is a large part of why supplementing the finished compound has drawn scientific interest. Once present, urolithin A appears to support mitophagy, the housekeeping process by which cells identify and recycle worn-out mitochondria so that newer, more efficient ones can take their place.

For a fuller primer, see our urolithin A guide and our explainer on what mitophagy is. Understanding the mechanism is what lets you separate a serious urolithin A product from a token dusting of pomegranate extract.

How we grade a urolithin A supplement

We use four criteria, and they apply to every brand including ours: dose (does a daily serving reach the clinically studied range?), testing (is there third-party verification of identity and purity?), format (is the delivery format convenient and accurately dosed?), and value (what does an actual month of the studied dose cost?). None of these criteria favor a particular company. They simply reflect what the human research was built on.

Dose

This is the single most important number. The human trials on urolithin A used a clinically studied range of roughly 500 to 1,000 mg per day, with 1,000 mg representing the top of that range. ProHealth's product is a capsule sold in a 60-count bottle. The current supplement facts list a serving of two capsules providing 500 mg of urolithin A, with 30 servings per bottle (retail label listing). That places a standard serving at the bottom of the studied 500 to 1,000 mg range, which is the dose used in the lower arm of the four-month middle-aged trial. Reaching 1,000 mg would mean four capsules a day, at which point a bottle lasts about 15 days. Neither choice is wrong, but it is worth knowing which end of the range you are buying into. Our full breakdown of urolithin A dosage covers this in detail.

One nuance worth flagging: ProHealth markets its capsule as "Full Spectrum," pairing urolithin A with a pomegranate fruit extract (250 mg, standardized to punicalagins) and a muscadine grape skin and seed extract (100 mg) per serving. The 500 mg urolithin A figure is listed separately, so the blend does not inflate it. What the extras add is less clear: the pomegranate extract supplies ellagitannin precursors, which only help if your gut bacteria convert them, and no urolithin A trial has tested this combination. Treat them as a formulation preference rather than a proven upgrade.

Testing

Urolithin A is an expensive raw material, which historically created an incentive for under-dosing or adulteration in the broader supplement market. That makes independent verification meaningful rather than decorative. ProHealth's marketing describes the product as lab-tested and manufactured in the USA, which is a point in its favor, though the retail listing we checked did not include testing documentation. The strongest position any brand can hold here is third-party testing, where an outside laboratory confirms both the identity and the amount of urolithin A. If that matters to you, look for a certificate of analysis or batch testing documentation and confirm it reflects the finished product, not just the incoming ingredient.

Format

ProHealth uses capsules. Capsules are proven, shelf-stable, and free of added sweeteners, which suits people who prefer a no-frills pill. The trade-off is swallowing multiple capsules daily and, for some people, lower adherence over time. Format is genuinely a matter of preference: a capsule is not inherently better or worse than a gummy or a powder, as long as the daily total reaches the studied dose. What matters is that you actually take it consistently for the several weeks the research suggests are needed.

Value

Value is only meaningful once dose is settled, because the honest comparison is cost per day at the studied dose, not sticker price per bottle. Because prices shift with promotions and retailer, we are not quoting a figure here. Do the arithmetic yourself: milligrams per day, days per bottle, and price per bottle will tell you cost per studied dose better than any marketing line. With ProHealth, one bottle covers 30 days at 500 mg or about 15 days at 1,000 mg, so compare like for like. Our guide to choosing a urolithin A supplement walks through how to compare products on dose, testing and cost.

What the human evidence supports

Whatever brand you choose, it is worth being precise about what urolithin A has and has not been shown to do in people. The strongest human data concerns muscle and mitochondrial function. In a randomized trial in older adults published in JAMA Network Open (Liu, D'Amico and colleagues, 2022; HUMAN), roughly four months of supplementation was associated with improved muscle endurance, measured as the number of muscle contractions before fatigue, although the primary walking-distance endpoint was not met. A separate randomized trial in middle-aged adults, published in Cell Reports Medicine (Singh and colleagues, 2022; HUMAN) with 500 mg and 1,000 mg arms, reported improvements in leg muscle strength, while grip strength and VO2 max did not change significantly. The first-in-human safety work (Andreux and colleagues, Nature Metabolism, 2019; HUMAN) found urolithin A safe and well tolerated at doses up to 1,000 mg per day and detected a favorable mitochondrial gene-expression signature.

Newer human research is expanding the picture. A 2025 randomized trial in Nature Aging (HUMAN) reported that four weeks of 1,000 mg per day was associated with more naive CD8+ T cells and markers of improved mitochondrial function in immune cells of middle-aged adults, relevant to the concept of inflammaging. A 2024 eight-week randomized trial in the Journal of the International Society of Sports Nutrition (HUMAN) examined endurance and recovery markers in resistance-trained men. Taken together, these are encouraging, but a 2024 systematic review in Ageing Research Reviews is candid that the human evidence is still emerging, drawn from relatively short trials with modest sample sizes. A 2026 systematic review of five muscle trials likewise judged the pooled effect directionally favorable but statistically inconclusive (Dao and colleagues, Frontiers in Nutrition, 2026). That honest framing applies to every urolithin A product, ProHealth's and ours included.

Areas such as joint, skin, gut, brain, and heart health remain at the early or preclinical stage. Foundational animal and cell work (Ryu and colleagues, Nature Medicine, 2016; PRECLINICAL) established the mitophagy mechanism and showed effects on lifespan in C. elegans and muscle function in rodents, and a 2022 study in Aging Cell (D'Amico and colleagues; PRECLINICAL) explored joint and cartilage mitochondrial health in osteoarthritis models. These are preclinical findings, not human proof, and should be read as directions researchers are still exploring. You can review the specific trials in our clinical studies summary.

A note on health conditions

Urolithin A is a dietary supplement intended to support normal mitochondrial and muscle function; it is not a treatment for any disease. If you are managing a medical condition, are pregnant or nursing, or take prescription medication, a urolithin A supplement is not a substitute for medical care. Talk with your doctor before starting one, and treat it as an addition to, not a replacement for, professional advice.

The verdict on ProHealth

ProHealth Longevity is a legitimate, established brand with a real urolithin A product and stated US manufacturing and lab testing. Its Full Spectrum formulation appeals to shoppers who like the idea of pairing urolithin A with pomegranate and grape polyphenols and who prefer capsules. At 500 mg of urolithin A per two-capsule serving, a standard dose sits at the lower end of the 500 to 1,000 mg studied range, so the main questions are whether that end of the range suits you and what it works out to as cost per day. If those numbers line up with how you want to supplement, it is a defensible choice. For more on the difference between the two studied doses, see our urolithin A dosage article. If your priority is the full 1,000 mg studied dose in a format you will not forget, compare it against a dedicated 1,000 mg option. For a wider field, see our roundup of the best urolithin A gummies.

*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.