Urolithin A with Creatine

Reviewed by SOMA HEALTH's Medical Research Team

Creatine is one of the most researched sports supplements in existence, and urolithin A is one of the newer, mitochondria-focused ingredients drawing attention for muscle. They work in genuinely different ways — creatine fuels short, hard efforts, while urolithin A supports the cellular maintenance behind your mitochondria. This guide explains how the two fit a strength routine and what the human evidence honestly supports.

Different mechanisms, complementary roles

Creatine monohydrate works on the energy side of the equation. Your muscles store creatine as phosphocreatine, which rapidly regenerates ATP during brief, intense efforts — the first few heavy reps of a set, a sprint, a jump. Supplementing raises the size of that phosphocreatine reservoir, which is the mechanistic basis for its well-documented support of strength and high-intensity training capacity. It is inexpensive, extensively studied, and its effects on training performance are among the most reliably reported in the field.

Urolithin A (UA) works on the maintenance side. It is a gut postbiotic your microbiome makes from ellagitannins in pomegranate, walnuts, and berries — and only some people convert it efficiently, which is why a consistent supplemental dose helps. UA's central, most-studied action is support for mitophagy, the process that clears out worn mitochondria so the cell can replace them with fresher, better-functioning ones. Where creatine gives a muscle more immediately available fuel, UA supports the long-term quality of the mitochondrial machinery that keeps muscle working.

That distinction matters for expectations. Creatine can influence what you lift within weeks; UA is a slower, multi-month player aimed at cellular energy support rather than an acute performance boost.

What the human evidence shows for urolithin A

Proven in humans: safety and a mitochondrial signal

The foundational trial — Andreux and colleagues (2019, Nature Metabolism) — showed UA was safe and well tolerated at doses up to 1,000 mg per day and produced a measurable mitochondrial gene-expression signature in muscle. This is the safety and biomarker base beneath the later work.

Newer human trials: strength, endurance, and performance

Singh and colleagues (2022, Cell Reports Medicine) tested 500 mg and 1,000 mg arms in middle-aged adults over four months and reported benefits for muscle strength and aspects of exercise performance — the most directly strength-relevant UA result to date. Liu, D'Amico and colleagues (2022, JAMA Network Open) reported support for muscle endurance in older adults over roughly four months. In trained populations, an eight-week randomized trial in resistance-trained men (Journal of the International Society of Sports Nutrition, 2024) and a 2025 trial in distance runners extend the evidence toward athletes, and a 2025 Nature Aging RCT (~28 days) reported support for immune-cell mitochondrial health in midlife adults. Importantly, a 2024 systematic review in Ageing Research Reviews concludes the human evidence for UA is still emerging — promising, but not the settled, decades-deep base creatine enjoys.

Preclinical roots

Much of the early UA story came from preclinical work — Ryu and colleagues (2016, Nature Medicine) showed UA induced mitophagy, extended lifespan in C. elegans, and improved muscle measures in rodents. Label this clearly as preclinical: animal and cell findings motivate the human trials but do not stand in for them.

What creatine is actually studied for

Creatine's evidence base is large and consistent for supporting strength, power, and high-intensity exercise performance when paired with resistance training, and it is generally recognized as safe for healthy adults at standard doses. Two dosing approaches are commonly described: a short loading phase of roughly 20 g per day split into servings for about a week, or simply 3–5 g per day with no loading, which reaches the same muscle saturation over a few weeks. Daily consistency matters more than timing with creatine; taking it around your workout or at any fixed time both work. A well-known and harmless early effect is a small increase in body water. Creatine is a training supplement, not a medical treatment — if you have kidney concerns, clear it with your doctor first.

How to combine them sensibly

Dose

UA has been studied at 500–1,000 mg per day, with 1,000 mg at the top of the researched range; SOMA HEALTH's gummies are built around that 1,000 mg daily serving. Creatine monohydrate is typically 3–5 g per day for maintenance. The two occupy entirely separate dose scales and there is no established interaction between them. For the UA specifics, see our urolithin A dosage guide, and for the muscle angle in particular, our page on urolithin A for muscle.

Timing

Neither ingredient is timing-sensitive. UA depends on daily consistency so the mitophagy-supporting exposure stays steady; creatine depends on reaching and maintaining muscle saturation, which again is about daily intake rather than the clock. A practical routine is UA gummies with breakfast and creatine whenever fits your day — often mixed into a shake around training. There is no reason they cannot be taken together.

Set realistic expectations

Stacking does not guarantee additive results, and there is no human trial testing UA and creatine together. Think of them as covering two bases: creatine for immediate high-intensity fuel, UA for mitochondrial maintenance over months. Both sit on top of — not in place of — progressive resistance training, adequate protein, and sleep. For the wider picture, our complete urolithin A guide and the roundup of the best urolithin A gummies are useful next steps.

Honest limitations

UA is not proven to build muscle on its own, replace training, or do what creatine does; its human evidence is centered on mitochondrial biomarkers and measures of muscle function, and reviewers still call the field emerging. Creatine's effects are better established but are modest and depend on training — it is not a substitute for the work. Because strength, recovery, and fatigue can have medical causes, treat persistent problems as a reason to see your doctor rather than something a supplement is meant to fix; these products support normal function and are not a treatment. If you have kidney disease, take medications, or are pregnant or nursing, talk to your doctor before adding either.

*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.