Urolithin A

A gut-bacteria-dependent compound most people can't reliably make from food alone

4-month randomized trial showed +12% muscle strength

Only 30–40% of people naturally produce meaningful amounts

Important: These statements have not been evaluated by the FDA. This information is not intended to diagnose, treat, cure, or prevent any disease. Always consult your physician before starting any supplement.

Overview

Urolithin A is a compound produced when gut bacteria metabolize ellagitannins — plant compounds found in pomegranates, walnuts, and certain berries. It has become one of the more credible entries in the trending "longevity and mitochondrial health" supplement category, largely because it's backed by an actual randomized, placebo-controlled human trial rather than mouse data alone.

The key detail most marketing skips: your body can't absorb Urolithin A directly from food. It depends entirely on your gut microbiome's ability to convert ellagitannins into it, and research suggests only about 30-40% of people carry gut bacteria efficient enough to produce meaningful amounts — everyone else gets little to none from eating pomegranates alone. This is the actual rationale for supplementing with purified Urolithin A directly, rather than a marketing invention.

Potential Benefits

Muscle Strength

A 4-month randomized trial in middle-aged adults found roughly 12% improved muscle strength with the higher tested dose compared to placebo.

Mitochondrial Health Biomarkers

The same trial found measurable improvements in biomarkers associated with mitochondrial function alongside the strength gains.

Exercise Performance Measures

Improvements in exercise-performance measures were observed alongside strength and mitochondrial biomarker changes in the same trial.

Joint Comfort Research

Separate research has explored Urolithin A's effect on mitochondrial health in cartilage, an emerging area distinct from the muscle-strength trial.

Typical Dosage

Studied Dose

500–1,000mg per day

The higher end of this range showed the strongest results in the muscle-strength trial

Duration to See Effects

Several months of consistent use

The positive trial ran for 4 months of continuous supplementation

Pro Tips

Skip trying to "get it from pomegranates" — most people's gut bacteria can't convert it efficiently
Pair with resistance training — the trial showing strength gains was conducted alongside normal activity, not sedentary use
Give it time — this is not a same-day or same-week supplement based on the trial timeline
Check for a purified, standardized Urolithin A product rather than a generic pomegranate extract label

Research Snapshot

A randomized, placebo-controlled trial in middle-aged adults tested two doses of Urolithin A over 4 months and found the higher dose produced approximately 12% improved muscle strength, alongside gains in exercise-performance measures and biomarkers of mitochondrial health, compared to placebo.

Source: Singh et al., Cell Reports Medicine (2022)

How Urolithin A Compares

Ingredient	Best For	Key Difference
Urolithin A	Muscle Strength & Mitochondrial Health	Bypasses the gut-bacteria bottleneck of getting it from food
NMN / Nicotinamide Riboside	NAD+ Support	Targets a different cellular energy pathway (NAD+, not mitophagy)
CoQ10	Mitochondrial Energy Production	Directly supports the electron transport chain rather than mitophagy
Pomegranate Extract	General Antioxidant Support	Provides the raw ellagitannins, but conversion to Urolithin A isn't guaranteed

These are the most common comparisons our customers ask about in-store.

Popular Stacks with Urolithin A

Mitochondrial Health Stack

Urolithin A + CoQ10 + Nicotinamide Riboside

Targets cellular energy production from multiple angles

Healthy Aging Muscle Stack

Urolithin A + Creatine + Whey Protein

Pairs mitochondrial support with established muscle-maintenance basics

Longevity Foundation Stack

Urolithin A + Omega-3 + Resveratrol

Combines cellular-health-focused ingredients with broader healthy-aging basics

Frequently Asked Questions

Can I just eat pomegranates to get Urolithin A?

Not reliably. Your body doesn't absorb Urolithin A directly from pomegranates, walnuts, or berries — gut bacteria have to convert ellagitannins in those foods into Urolithin A first, and research shows only about 30-40% of people carry gut bacteria efficient enough to produce meaningful amounts. Direct Urolithin A supplementation bypasses this bottleneck entirely.

What does the human research on Urolithin A actually show?

A randomized, placebo-controlled trial in middle-aged adults found that a higher dose of Urolithin A over 4 months improved muscle strength by roughly 12% and improved several biomarkers of mitochondrial health, alongside gains in exercise-performance measures, compared to placebo.

Is Urolithin A safe?

The published human trials to date have reported it as well tolerated with no serious adverse events at studied doses. As with any newer supplement, long-term safety data beyond several months is still limited, so checking with a physician before starting is a reasonable precaution.

Sources & References

1. Singh, A., D'Amico, D., Andreux, P.A., et al. (2022). Urolithin A improves muscle strength, exercise performance, and biomarkers of mitochondrial health in a randomized trial in middle-aged adults. Cell Reports Medicine, 3(5), 100633.

All references are peer-reviewed studies or position stands from reputable organizations.