Urolithin A vs Creatine: How They Differ and Can You Take Both?

Two supplements, two different energy problems

People often frame "Urolithin A vs creatine" as a contest, but they solve different problems. Creatine addresses the speed of energy delivery: how fast your muscles can regenerate ATP during a hard set or sprint. Urolithin A addresses the quality of your energy factories: how well your mitochondria function and renew themselves over time. Understanding that distinction is the key to deciding whether you want one, the other, or both.

How creatine works

Your muscles store creatine mostly as phosphocreatine. During a heavy lift or a sprint, ATP is used up within seconds, and the enzyme creatine kinase transfers phosphate from phosphocreatine back onto ADP to rebuild ATP almost instantly. This buffer covers roughly the first several seconds of all-out effort before slower energy systems take over. Supplementing raises muscle creatine stores, so you can squeeze out a little more work per set, and over weeks of training that extra work adds up to more strength and lean mass.

The International Society of Sports Nutrition position stand (Kreider et al., 2017) concludes that creatine monohydrate is the most effective ergogenic nutritional supplement available for increasing high-intensity exercise capacity and lean mass during training. A review in Nutrients (Wax et al., 2021) reinforces its effects on short-duration, high-intensity performance and recovery. Typical dosing is 3 to 5 g per day, sometimes preceded by a short loading phase. Expect a small early gain on the scale: that is water drawn into muscle cells, not fat.

How Urolithin A works

Urolithin A works on a slower, more foundational timescale. It is a postbiotic: gut bacteria produce it from ellagitannins found in foods like pomegranates and walnuts. Conversion varies widely from person to person, and many people make very little, which is why a standardized dose such as SOMA Urolithin A gummies (1,000 mg per 4-gummy daily serving) delivers a predictable amount regardless of your microbiome. Our guide to converter status explains why.

Its signature action is mitophagy: the cellular cleanup process that tags worn, damaged mitochondria and recycles them so healthier ones can take their place. Preclinical (animal and cell research): foundational work in Nature Medicine (Ryu et al., 2016) showed Urolithin A induces mitophagy and improves muscle function in worms and rodents, and a review in Trends in Molecular Medicine (D'Amico et al., 2021) summarizes how this connects to mitochondrial and cellular health with age. Because mitochondria drive sustained, aerobic energy, Urolithin A is oriented toward endurance and muscle function over time rather than explosive power on any given day.

Urolithin A vs creatine: side-by-side

What each is best for

Choose based on your goal. If your priority is lifting heavier, sprinting faster, or building strength and lean mass, creatine is the more direct and better-proven tool. If your priority is muscle endurance, day-to-day cellular energy, or supporting muscle and mitochondrial health as you age, Urolithin A is aimed at that. Many active adults care about both, which is why the two are often used together rather than swapped. For a deeper look at the strength data specifically, see what the clinical trials show on Urolithin A and muscle strength.

The human evidence, honestly graded

Creatine has a decades-deep evidence base spanning hundreds of trials, and its efficacy and safety are among the best characterized of any supplement. Urolithin A is newer and the trials are smaller, so it is worth reading them closely. Human trials:

• Andreux et al., 2019, Nature Metabolism. The first-in-human trial in healthy older adults found Urolithin A well tolerated and showed it shifted plasma acylcarnitines and skeletal-muscle mitochondrial gene expression at 500 mg and 1,000 mg over four weeks. This was a safety and biomarker study, not a performance study.
• Liu et al., 2022, JAMA Network Open. In older adults, the primary outcome (6-minute walk distance) did not differ significantly from placebo. Secondary outcomes did: muscle endurance in a hand muscle and a leg muscle improved, and plasma markers including acylcarnitines, ceramides, and C-reactive protein fell.
• Singh et al., 2022, Cell Reports Medicine. In middle-aged adults (40 to 64) taking 500 mg or 1,000 mg daily for four months, leg muscle strength improved compared with placebo, alongside favorable shifts in mitochondrial and cellular biomarkers.
• Zhao et al., 2024, Journal of the International Society of Sports Nutrition. This is the trial most relevant to people who already lift. Twenty young resistance-trained men took 1,000 mg daily or placebo for 8 weeks alongside training. The Urolithin A group improved more in maximal isometric strength and repetitions to failure, and showed lower C-reactive protein and lower urinary 3-methylhistidine (a marker of muscle protein breakdown). It is a small, short study and needs replication, but it is the first randomized trial in trained athletes.

In short: creatine is mature and its effects on strength are well established. Urolithin A is emerging, with credible but limited human data that points more toward muscle endurance and mitochondrial markers than raw power.

Safety

Both have reassuring safety profiles at studied doses in healthy adults. The creatine literature, including the common questions and misconceptions review (Antonio et al., 2021), concludes it is well tolerated at recommended dosages and addresses persistent myths about kidney and hydration effects. One practical point: creatine can modestly raise blood creatinine, a lab value doctors use to estimate kidney function, without any actual kidney harm. Tell your doctor you take it so a routine blood test is not misread. Urolithin A was well tolerated in all of the human trials above; our Urolithin A safety guide covers the details.

If you have kidney disease, are pregnant or nursing, take prescription medications, or manage any health condition, talk with your doctor before starting either supplement.

Can you take both? Yes, they're complementary

This is the crux of the "vs" question, and the honest answer is that it is usually not a versus at all. Creatine tops up the fast phosphocreatine buffer, while Urolithin A supports the mitochondria that handle sustained output and renewal. They do not compete for the same pathway, and there is no known interaction between them. No trial has yet tested the two together, so the case for stacking rests on their separate mechanisms rather than direct combined data.

A simple, practical routine:

• Creatine monohydrate: 3 to 5 g once a day, any time. Consistency matters more than timing; many people mix it into a post-workout shake.
• Urolithin A: 500 to 1,000 mg once a day with a meal, every day including rest days. With SOMA, that is the 4-gummy serving.
• Keep training: both work best on top of regular resistance training and enough protein. Neither replaces the work itself.
• Give it time: judge creatine after about a month and Urolithin A after two to four months of consistent use.

For more on combining Urolithin A with other popular supplements, see stacking Urolithin A with NMN, NAD+ boosters, creatine, and CoQ10.

Frequently asked questions

Is Urolithin A a replacement for creatine?
No. They target different systems: creatine for rapid ATP and strength, Urolithin A for mitochondrial quality and endurance. One does not substitute for the other.

Can I take Urolithin A and creatine together?
Yes. They act on separate energy pathways and have no known interaction, so they can be used in the same routine. Check with your doctor if you have kidney concerns or other health conditions.

Which one is better for building strength?
For raw strength, power, and lean-mass goals tied to high-intensity training, creatine has the most direct, mature evidence. Urolithin A showed strength gains in two randomized trials, but they were smaller and shorter.

How much Urolithin A is studied?
Human trials have used 500 to 1,000 mg per day, taken once daily and consistently. The 2024 trial in resistance-trained men used 1,000 mg.

Does creatine work for older adults, not just athletes?
Yes. The sports-nutrition literature supports creatine's benefits for muscle and performance across ages when paired with training, which is one reason it pairs naturally with a healthy-aging ingredient like Urolithin A.

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