Urolithin A vs Maca

Maca and urolithin A both get shelved under "energy," but they come from different worlds and act on different parts of your biology. Maca is a traditional Andean root valued for stamina and vitality; urolithin A is a gut-derived molecule studied for how it helps cells maintain their mitochondria. Here is a careful, evidence-first comparison so you can decide which fits your goals.

Two very different ideas of "energy"

When people say a supplement gives them energy, they can mean several different things: a subjective lift in drive and mood, better physical stamina during exertion, or an actual change in how efficiently their cells produce fuel. Maca and urolithin A tend to sit on opposite ends of that spectrum, which is why comparing them is genuinely useful rather than a marketing exercise.

Maca (Lepidium meyenii) is a cruciferous root vegetable grown at high altitude in the Peruvian Andes, where it has been eaten and used traditionally for centuries. It is typically consumed as a dried powder or extract and is marketed for stamina, mood, libido, and a general sense of vitality. Its proposed active compounds include glucosinolates and unique molecules called macamides and macaenes, though researchers still debate exactly how maca produces the effects people report.

Urolithin A is not a plant you eat directly. It is a postbiotic: a compound your gut bacteria make after you consume ellagitannins from foods like pomegranates, walnuts, and certain berries. Its most-studied role is in mitophagy, the cellular housekeeping process that clears away worn-out mitochondria so cells can rely on healthier ones. Because the ability to produce urolithin A from food varies widely between people, many adults get little of it even on a good diet.

What the research actually shows

Maca: traditional use, modest and mixed clinical data

Maca has a long history of traditional use, and that history is meaningful, but the clinical evidence behind the modern claims is thinner and more mixed than most product pages admit. Human studies tend to be small, short, and heterogeneous, using different maca varieties, doses, and extraction methods, which makes it hard to pool results or draw firm conclusions. Reviews of the literature repeatedly note the limited size and quality of trials and call for larger, better-controlled studies.

Some small trials have reported improvements in self-reported energy, mood, or sexual well-being, and maca is often described as an adaptogen, a loosely defined category of plants thought to help the body cope with stress. Notably, several studies have found that maca does not appear to significantly change circulating sex hormone levels, so whatever it does likely works through other pathways that are not yet well mapped. In short: maca is a plausible, generally well-tolerated traditional supplement with some suggestive human data, but it is not backed by the kind of rigorous, mechanism-anchored clinical research people often assume.

Urolithin A: a defined mechanism and a growing human trial base

Urolithin A has been studied with an unusually clear mechanistic story for a nutritional compound, and it has a stack of randomized human trials behind it. The first-in-human study, Andreux and colleagues in 2019 (published in Nature Metabolism), found that single doses up to 1,000 mg were safe and well tolerated in older adults and produced a mitochondrial gene-expression signature in muscle, an early signal that the molecule reaches tissue and engages the pathways seen in the lab.

Later randomized, placebo-controlled trials built on that. Singh and colleagues (2022, Cell Reports Medicine) gave middle-aged adults 500 mg or 1,000 mg daily for four months and reported improvements in muscle strength and aspects of exercise performance. Liu, D'Amico and colleagues (2022, JAMA Network Open) studied older adults over roughly four months and saw benefits in muscle endurance alongside favorable changes in markers linked to mitochondrial and cellular health. More recently, a 2025 randomized placebo-controlled study in Nature Aging reported that about 28 days of supplementation supported the mitochondrial health of immune cells in midlife adults, relevant to the low-grade inflammation of aging sometimes called inflammaging. A 2024 systematic review in Ageing Research Reviews pulled the human evidence together under the banner of targeting aging with urolithin A.

The foundational discovery work was preclinical. Ryu and colleagues (2016, Nature Medicine) showed that urolithin A induced mitophagy, extended lifespan in the worm C. elegans, and improved muscle function in rodents. That is animal and cell data, not proof in humans, but it set the stage for the human trials that followed and explains why the mechanism is described so confidently.

How they feel day to day

This is where expectations matter most. People often take maca hoping for a relatively quick, noticeable shift in drive, mood, or stamina, and some report exactly that, though placebo effects are hard to rule out in short, small studies. Urolithin A works on a slower, quieter timescale. It is not a stimulant and will not give you a buzz; instead, the trials that show benefits generally ran for weeks to months, consistent with the idea that supporting mitochondrial quality is a gradual process rather than an acute hit. If you are expecting an afternoon pick-me-up, neither of these is caffeine, but urolithin A in particular is designed to be felt, if at all, as steadier output over time rather than a spike.

Can you take them together?

There is no established reason the two cannot be used together, since they act on different systems and neither is a stimulant. That said, combining supplements makes it harder to know which one is doing anything, and it adds cost. A sensible approach is to be clear about your primary goal. If you mainly want support for cellular energy production, muscle endurance, and healthy aging, urolithin A is the more targeted choice. If you are specifically drawn to maca's traditional profile around vitality and mood and want to try it, that is a separate decision. As always, if you take medications or have a health condition, talk with your doctor before adding either, as this guidance is educational and not a treatment recommendation.

Quality and dosing considerations

With maca, the biggest practical issues are standardization and sourcing: products vary in variety, processing, and concentration, so two "maca" supplements can be quite different. With urolithin A, the key number is the dose. The clinically studied range is 500–1,000 mg per day, and many products on the market contain far less, sometimes a token amount buried in a blend. If you choose urolithin A, look for a clearly stated dose in that range and third-party testing. You can go deeper in our urolithin A guide and compare specific products in our roundup of the best urolithin A gummies. For a related head-to-head, see urolithin A vs ashwagandha, another popular adaptogen comparison.

*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.