Reviewed by the Celnovix Editorial Team
Last reviewed: September 2026
If your goal is healthy muscle aging, two supplements now appear repeatedly in the conversation:
Creatine
and:
Urolithin A.
They are sometimes grouped together because both are discussed in relation to:
- Muscle health
- Physical performance
- Healthy aging
- Cellular energy
But they are not interchangeable.
Creatine has decades of human research behind it and is especially well established for:
- Strength
- Resistance-training performance
- Lean tissue
- Muscle support during aging
Urolithin A is newer.
Its research focuses more heavily on:
- Mitophagy
- Mitochondrial quality control
- Muscle endurance
- Mitochondrial biomarkers
So if you are asking:
“Which one is better?”
the answer depends on:
better for what?
If the goal is:
building strength and supporting lean mass
current evidence favors:
Creatine.
If the goal is specifically:
supporting mitochondrial quality-control biology
Urolithin A is more directly targeted toward that mechanism.
Here is how the evidence compares.
Urolithin A vs Creatine: Quick Answer
|
Goal |
Better Supported Option |
|---|---|
|
Muscle strength |
Creatine |
|
Lean muscle mass |
Creatine |
|
Resistance-training performance |
Creatine |
|
Muscle hypertrophy support |
Creatine |
|
Healthy aging muscle support |
Creatine has stronger evidence |
|
Mitophagy |
Urolithin A |
|
Mitochondrial quality control |
Urolithin A |
|
Muscle endurance |
Emerging evidence for Urolithin A |
|
Immediate exercise performance |
Creatine |
|
Long-term evidence base |
Creatine |
|
Older-adult evidence |
Creatine is broader |
|
Cellular recycling research |
Urolithin A |
The most accurate summary is:
Creatine has the stronger evidence for muscle strength and lean mass. Urolithin A has a more specific mechanistic focus on mitochondrial quality control and mitophagy.
What Is Creatine?
Creatine is a naturally occurring compound produced from amino acids.
It is also found in foods such as:
- Meat
- Fish
Most creatine in the human body is stored in:
skeletal muscle.
There it contributes to the:
phosphocreatine system
which helps rapidly regenerate:
ATP.
ATP is the immediate energy currency used by cells.
How Does Creatine Work?
During high-intensity muscular contractions, ATP is rapidly depleted.
Stored phosphocreatine can donate a phosphate group to:
ADP
to regenerate:
ATP.
Simplified:
Phosphocreatine + ADP
↓
Creatine + ATP
This helps support short-duration, high-intensity muscular work.
That is one reason creatine has such a strong research base in:
- Strength training
- Sprint performance
- Repeated high-intensity exercise
What Is Urolithin A?
Urolithin A is a metabolite produced when certain gut bacteria transform compounds from foods such as:
- Pomegranate
- Walnuts
- Berries
The dietary precursors include:
- Ellagitannins
- Ellagic acid
Not everyone naturally produces the same amount of Urolithin A because gut microbial metabolism varies substantially.
Direct supplementation bypasses much of that variability.
Read:
Why Can’t Everyone Produce Urolithin A? Gut Metabotypes Explained
How Does Urolithin A Work?
The major research focus is:
mitophagy.
Mitophagy is the cellular process used to identify and remove:
damaged or dysfunctional mitochondria.
This is part of the body’s mitochondrial:
quality-control system.
The concept is different from creatine.
Creatine primarily helps with:
rapid energy buffering.
Urolithin A is studied more for:
maintaining the quality of the mitochondrial network.
Creatine vs Urolithin A: The Core Difference
A simple way to think about the distinction is:
Creatine
Helps muscles:
rapidly regenerate ATP during demanding muscular work.
Urolithin A
Is studied for helping cells:
remove and recycle dysfunctional mitochondria.
So one is more directly associated with:
energy buffering and performance.
The other is more closely associated with:
mitochondrial quality control.
Which Is Better for Muscle Strength?
Creatine.
Current evidence is substantially stronger.
Creatine has been investigated across:
- Hundreds of trials
- Younger adults
- Older adults
- Athletes
- Untrained populations
In older adults specifically, multiple systematic reviews and meta-analyses show that creatine combined with resistance training can improve:
- Lower-body strength
- Upper-body strength in some analyses
- Lean tissue mass
What Does the Latest Creatine Research Show?
A 2025 systematic review and meta-analysis included:
8 randomized controlled trials
and:
482 older adults.
Participants completed resistance training approximately:
2–3 times per week
while receiving either:
- Creatine
- Placebo
Interventions ranged from:
8 to 104 weeks.
Compared with placebo plus resistance training, creatine plus resistance training significantly improved:
- Lower-limb muscle strength
- Lean tissue mass
How Much Did Creatine Help?
The 2025 meta-analysis reported:
Lower-limb strength
Standardized mean difference:
0.29
Lean tissue mass
Standardized mean difference:
0.27
Effects were generally modest.
But they were supported across multiple trials.
That consistency matters.
Does Creatine Improve Strength in Older Adults?
Yes.
Another 2025 systematic review and meta-analysis included:
20 studies
and:
1,093 older adults.
Creatine plus exercise training significantly improved:
one-repetition maximum strength.
This reinforces the larger evidence base supporting creatine in older populations.
What About Older Creatine Research?
The evidence is not new.
A 2017 meta-analysis included:
22 studies
and:
721 participants.
Creatine supplementation during resistance training resulted in greater increases in:
- Lean tissue mass
- Chest-press strength
- Leg-press strength
compared with placebo plus resistance training.
Lean tissue mass increased by approximately:
1.37 kg more
in the creatine groups.
View the meta-analysis on PubMed
That is a much more mature evidence base than currently exists for Urolithin A.
Does Urolithin A Improve Strength?
Possibly.
But evidence is much more limited.
A randomized trial in:
88 middle-aged adults
tested:
- 500 mg/day Urolithin A
- 1,000 mg/day Urolithin A
- Placebo
for:
four months.
Researchers reported improvement in selected:
hamstring strength
measures.
However, the primary endpoint involving:
peak muscle power
did not significantly improve.
What Does the 2026 Urolithin A Meta-Analysis Show?
The latest systematic review and meta-analysis included only:
5 randomized controlled trials
with:
236 participants.
Researchers concluded that current evidence remains:
- Small
- Short term
- Heterogeneous
Strength outcomes could not be meaningfully pooled because studies used different:
- Populations
- Doses
- Tests
- Intervention designs
The authors therefore described strength findings as:
exploratory.
View the 2026 meta-analysis on PubMed
Winner for Strength
Creatine.
Evidence confidence:
Creatine
High relative confidence
Urolithin A
Emerging evidence
Which Is Better for Muscle Mass?
Again:
Creatine.
Creatine has repeated evidence supporting increases in:
lean tissue mass
especially when combined with:
resistance training.
Does Creatine Actually Build Muscle?
Creatine itself does not replace:
resistance training.
But it can help enhance adaptations to training.
Potential mechanisms include:
- Improved training capacity
- Greater cellular hydration
- Increased phosphocreatine availability
- Greater training volume
- Muscle signaling changes
Over time, this can support greater increases in:
lean tissue.
Does Urolithin A Build Muscle?
Current evidence does not establish Urolithin A as:
a muscle-building supplement.
It does not provide:
- Protein
- Essential amino acids
- Leucine
And current trials do not show a strong hypertrophy effect.
The more accurate positioning is:
muscle-function and mitochondrial research
rather than:
muscle hypertrophy.
Winner for Muscle Mass
Creatine.
By a significant evidence margin.
Which Is Better for Muscle Endurance?
This comparison becomes more interesting.
Urolithin A has shown encouraging results for:
fatigue resistance.
In one randomized clinical trial involving:
66 adults aged 65–90
participants took:
1,000 mg/day Urolithin A
for:
four months.
Selected:
- Hand muscle endurance
- Leg muscle endurance
improved compared with placebo.
Does Creatine Improve Endurance?
Creatine is primarily associated with:
high-intensity repeated performance
rather than traditional:
long-duration aerobic endurance.
It can help with repeated:
- Sets
- Sprints
- Explosive efforts
because those activities rely heavily on:
phosphocreatine.
Its benefit for steady-state endurance exercise is less pronounced.
Is Urolithin A Better for Endurance?
Not necessarily.
It depends on what kind of endurance you mean.
Repeated high-intensity muscular work
Creatine has stronger performance evidence.
Age-related local muscle fatigue resistance
UA has some interesting emerging evidence.
The two are addressing somewhat different physiological problems.
Which Is Better for Mitochondrial Health?
If by mitochondrial health you mean:
mitochondrial quality control and mitophagy,
Urolithin A is more specifically targeted.
Urolithin A and Mitophagy
UA is widely studied for its ability to influence pathways associated with:
mitophagy.
Mitophagy helps remove:
damaged mitochondria.
Experimental research has linked UA with pathways involving:
- PINK1/Parkin
- AMPK-related signaling
- TFEB
- Autophagy-related proteins
Human studies have also detected changes involving:
- Mitochondrial gene expression
- Acylcarnitines
- Mitochondrial-related proteins
Read:
Urolithin A and Mitophagy: How Does It Actually Work?
Does Creatine Improve Mitochondria?
Creatine interacts with cellular energy metabolism.
But it is not primarily classified as a:
mitophagy activator.
Its strongest mechanism relates to:
phosphocreatine energy buffering.
So when people compare them as “mitochondrial supplements,” they are often oversimplifying the biology.
Winner for Mitophagy
Urolithin A.
But remember:
better mitophagy evidence does not automatically mean better muscle-growth results.
Which Is Better for ATP?
This requires another distinction.
Creatine
Directly helps regenerate ATP during high-energy demand.
Urolithin A
May influence mitochondrial quality-control processes.
But human trials have not consistently shown increased:
maximal mitochondrial ATP production.
In fact, the older-adult UA trial did not significantly improve maximal ATP production compared with placebo.
So if the question is:
“Which has a more direct role in ATP availability during exercise?”
the answer is:
Creatine.
Which Is Better for Healthy Muscle Aging?
Overall:
Creatine currently has the stronger evidence.
Why?
Because healthy muscle aging depends heavily on:
- Strength
- Muscle mass
- Physical performance
And creatine has more consistent evidence across these endpoints.
Urolithin A remains interesting as:
an emerging mitochondrial adjunct.
Creatine and Healthy Aging Research
The creatine literature includes studies involving:
- Adults over 50
- Adults over 60
- Men
- Women
- Resistance-trained participants
- Untrained older adults
Interventions often last:
- Several months
- Up to one year or more in some research
That provides a broader clinical evidence base.
Urolithin A and Healthy Aging Research
Current Urolithin A studies are much smaller.
The 2026 meta-analysis only identified:
5 randomized trials.
Trial durations are generally:
four months or less.
So evidence maturity is clearly different.
Evidence Base Comparison
|
Creatine |
Urolithin A |
|
|---|---|---|
|
Decades of human studies |
Yes |
No |
|
Hundreds of studies |
Yes |
No |
|
Large meta-analyses |
Yes |
Emerging |
|
Older-adult evidence |
Extensive |
Limited |
|
Lean-mass evidence |
Strong |
Weak |
|
Strength evidence |
Strong |
Emerging |
|
Mitophagy evidence |
Limited focus |
Strong mechanistic focus |
|
Long-term human use data |
Much larger |
Limited |
Which Is Better After 50?
For someone over 50 whose primary goal is:
preserving muscle and strength,
creatine has stronger evidence.
Urolithin A may be considered as an additional compound when interest extends to:
- Mitochondrial health
- Mitophagy
- Muscle endurance
Read:
Which Is Better After 60?
Same general answer.
Creatine has stronger evidence for:
- Strength
- Lean mass
UA has direct research in adults:
65–90 years old
showing selected muscle-endurance and mitochondrial-related changes.
Read:
What If Your Main Goal Is Preventing Muscle Loss?
The hierarchy should be:
1. Resistance training
2. Adequate protein
3. Sufficient calories
4. Overall physical activity
5. Creatine as an evidence-based adjunct
6. Emerging compounds such as Urolithin A
This is a more defensible evidence hierarchy than putting every supplement on equal footing.
Creatine vs Urolithin A for Sarcopenia
Neither should be treated as a stand-alone treatment.
But creatine has substantially more evidence in:
older adults undergoing resistance training.
UA has not been established as:
- Preventing sarcopenia
- Treating sarcopenia
- Reversing sarcopenia
Does Creatine Treat Sarcopenia?
Creatine is not a substitute for clinical evaluation or exercise.
However, research supports creatine as a potentially useful adjunct to:
resistance training
for improving:
- Strength
- Lean tissue
in older adults.
What Does Resistance Training Do?
Resistance training provides the primary stimulus for:
muscle adaptation.
Creatine may enhance that response.
Without training, the expected muscle-building effect is generally much smaller.
This is why most strong healthy-aging creatine research studies:
Creatine + resistance training
rather than creatine alone.
Can Urolithin A Replace Resistance Training?
No.
UA does not provide the:
mechanical loading stimulus
required to strongly stimulate muscle hypertrophy.
Even if mitophagy improves, muscles still need:
training stimulus
to build and maintain tissue.
Can Creatine Replace Resistance Training?
Also no.
Creatine works best as:
an adjunct to exercise.
A supplement cannot replicate the broad adaptations caused by:
- Resistance training
- Cardiovascular exercise
- Balance work
Urolithin A vs Creatine for Exercise Performance
For classic exercise performance:
Creatine wins.
Creatine has strong evidence for activities requiring:
- Strength
- Power
- Repeated high-intensity efforts
UA research is not yet comparable in scale.
What About Aerobic Exercise?
Urolithin A trials have explored:
- VO₂-related outcomes
- Endurance
but results remain inconsistent.
Creatine is also not primarily an endurance supplement.
Neither should replace:
aerobic training itself.
What About Athletes?
Creatine is one of the most extensively studied sports supplements.
Its evidence base spans:
- Recreational athletes
- Competitive athletes
- Strength athletes
UA has much less athlete data.
One small study has evaluated UA in:
trained endurance runners,
but that evidence remains early.
Does Urolithin A Give You an Immediate Workout Boost?
No.
UA is not known to create:
- Acute pump
- Immediate strength increase
- Stimulant-like energy
Its research involves longer-term biological adaptation.
Does Creatine Work Immediately?
Creatine stores usually need to increase first.
This can happen through:
- A loading phase
or:
- Consistent daily intake
Once muscle creatine stores increase, the ergogenic effect becomes more relevant.
Do You Need to Load Creatine?
Not necessarily.
Some protocols use approximately:
20 g/day
split over several doses for:
5–7 days
followed by a lower maintenance dose.
But lower daily intake without loading can also gradually increase muscle creatine stores.
Loading mainly changes:
how quickly saturation occurs.
What Dose of Creatine Is Commonly Studied?
A common maintenance intake is approximately:
3–5 g/day.
Some studies use different amounts depending on:
- Body mass
- Study design
- Loading protocol
This article discusses research patterns, not individualized dosing.
What Dose of Urolithin A Is Commonly Studied?
Common clinical research doses include:
- 500 mg/day
- 1,000 mg/day
Read:
Does More Creatine Mean Better Results?
No.
Once muscle stores are adequately elevated, taking increasingly large doses does not necessarily produce proportionally greater benefit.
Does More Urolithin A Mean Better Results?
Also no.
There is no established linear rule showing:
1,000 mg = twice the benefit of 500 mg.
More is not automatically better.
Creatine vs Urolithin A: Which Works Faster?
For performance-related outcomes:
Creatine generally has the clearer short-term effect.
Once muscle stores increase, users may notice improvements in:
- Training volume
- Strength
- Repeated high-intensity work
UA outcomes are usually evaluated over:
- Several weeks
- Several months
How Long Does Urolithin A Take to Work?
Human research suggests:
Around 4 weeks
Mitochondrial-related biomarker changes may appear.
Around 2–4 months
Selected muscle-function outcomes have been studied.
Read:
How Long Does Urolithin A Take to Work?
Which Is Better for People Who Don’t Exercise?
This is a difficult comparison.
Neither should be used as a substitute for:
physical activity.
Creatine’s strongest muscle benefits occur with:
resistance training.
UA may have biological activity without exercise, but evidence does not support using it as a substitute for movement.
Can You Take Urolithin A and Creatine Together?
Potentially.
There is no established major incompatibility between:
creatine
and:
Urolithin A.
Their mechanisms are different enough that combination use is biologically plausible.
But:
There is not yet strong randomized human evidence showing that Creatine + Urolithin A produces superior muscle outcomes compared with creatine alone.
Would Combining Them Make Sense Mechanistically?
Possibly.
A theoretical model might look like:
Creatine
Supports:
rapid cellular energy buffering
and:
training performance.
Urolithin A
Supports research pathways associated with:
mitochondrial quality control.
But mechanistic complementarity is not the same thing as:
proven synergy.
Is There a Clinical Trial of Creatine + Urolithin A?
At present, there is not a robust body of randomized clinical evidence demonstrating a specific:
creatine + UA combination advantage
for:
- Muscle mass
- Strength
- Sarcopenia
- Longevity
So claims of “perfect synergy” are premature.
Which One Should You Take First?
If the main goal is:
Building strength
Creatine.
Supporting resistance-training adaptations
Creatine.
Increasing lean tissue
Creatine.
Studying mitochondrial quality-control support
Urolithin A may be more directly relevant.
Healthy muscle aging overall
Start with:
- Resistance training
- Protein
- Creatine
before treating emerging supplements as the foundation.
Creatine vs Urolithin A for Women Over 50
Women after menopause may experience changes in:
- Muscle mass
- Strength
- Bone health
- Body composition
Creatine has an expanding evidence base in older women.
UA’s major older-adult RCT also included a high proportion of:
women.
However, creatine remains the better-supported choice for:
- Strength
- Lean tissue
Creatine vs Urolithin A for Men Over 50
The same general hierarchy applies.
If the goal is:
strength and muscle preservation,
creatine has stronger evidence.
UA may be considered for its emerging:
mitochondrial and endurance research.
What About Bone Health?
Creatine combined with resistance training has been investigated for:
bone outcomes.
However, a 2025 meta-analysis found no significant effect on:
total-body bone mineral density.
View the meta-analysis on PubMed
UA currently has even less convincing evidence for bone health.
Neither should be positioned as:
an osteoporosis treatment.
What About Fat Loss?
Neither should primarily be considered a:
fat-loss supplement.
A meta-analysis in adults aged 50+ found a small reduction in body-fat percentage when creatine was combined with resistance training.
But the effect was modest.
UA has not been established as a weight-loss intervention.
Which Is Better for Longevity?
Neither has been proven to:
extend human lifespan.
That is important.
Creatine has substantial human performance and muscle evidence.
UA has interesting healthy-aging and mitochondrial research.
But neither has demonstrated:
human lifespan extension.
Which Is Better for Healthspan?
Healthspan means maintaining:
- Function
- Independence
- Physical capacity
- Quality of life
Because muscle strength strongly contributes to healthy aging, creatine currently has a stronger indirect healthspan case through:
muscle preservation and physical function.
UA remains an emerging candidate through:
mitochondrial biology.
Safety: Creatine vs Urolithin A
Creatine also has the larger safety database.
It has been studied extensively across:
- Healthy adults
- Athletes
- Older adults
UA’s available human safety data are encouraging but much smaller.
Is Creatine Hard on the Kidneys?
In healthy individuals using standard supplemental amounts, research has generally not demonstrated kidney damage.
Creatine can increase:
serum creatinine
because creatinine is a breakdown product of creatine.
This can complicate interpretation of kidney laboratory tests.
That does not automatically mean kidney damage has occurred.
People with established kidney disease require individualized guidance.
Is Urolithin A Hard on the Kidneys?
Current clinical trials have not identified a consistent kidney-toxicity signal.
But UA has a much smaller long-term safety database.
Read:
Which Has More Long-Term Safety Data?
Creatine.
This is not close.
Creatine has decades of use and research.
UA is much newer.
Most controlled UA trials currently last:
four months or less.
Can You Take Urolithin A Every Day?
Daily dosing has been studied.
But multi-year continuous safety is still insufficiently characterized.
Read:
Can You Take Urolithin A Every Day?
Creatine vs Urolithin A: Evidence Scorecard
|
Category |
Creatine |
Urolithin A |
|---|---|---|
|
Strength |
★★★★★ |
★★☆☆☆ |
|
Lean mass |
★★★★★ |
★☆☆☆☆ |
|
Resistance training |
★★★★★ |
★★☆☆☆ |
|
Muscle endurance |
★★★★☆ |
★★★☆☆ |
|
Mitophagy |
★☆☆☆☆ |
★★★★★ |
|
Mitochondrial quality control |
★★☆☆☆ |
★★★★★ |
|
Older adults |
★★★★★ |
★★★☆☆ |
|
Long-term safety |
★★★★★ |
★★☆☆☆ |
|
Human evidence maturity |
★★★★★ |
★★☆☆☆ |
|
Longevity proof |
☆☆☆☆☆ |
☆☆☆☆☆ |
The stars represent relative evidence maturity, not a clinical treatment rating.
Which One Is Better Overall?
For:
muscle aging specifically,
Creatine currently wins.
That conclusion is based on:
- Larger trial numbers
- Larger participant numbers
- Longer study history
- Consistent strength outcomes
- Lean-mass evidence
- Resistance-training data
UA should not be forced into an equal-evidence comparison.
Where Urolithin A Still Has an Advantage
UA becomes particularly interesting when the goal shifts from:
muscle size
to:
mitochondrial quality.
Its unique research value lies in:
- Mitophagy
- Mitochondrial quality control
- Cellular recycling
- Muscle fatigue resistance
These are areas where creatine’s mechanism is different.
The Best Healthy-Muscle Strategy Is Not Either/Or
The evidence-based hierarchy looks more like this:
Foundation
Resistance training
↓
Adequate protein
↓
Adequate calories
↓
Sleep and recovery
↓
Daily activity
Better-Established Supplement Support
Creatine
Emerging Mitochondrial Support
Urolithin A
That hierarchy is more scientifically defensible than treating all longevity supplements equally.
If You Can Only Choose One
If your goal is:
Strength
Choose:
Creatine.
Lean mass
Choose:
Creatine.
Resistance-training performance
Choose:
Creatine.
Muscle-building support
Choose:
Creatine.
Mitochondrial quality-control research
Consider:
Urolithin A.
Mitophagy
Urolithin A is more directly relevant.
What If You Already Take Creatine?
UA could theoretically occupy a different role.
But you should not assume:
adding UA automatically produces additional muscle gain.
Current research does not establish that.
The strongest reason for considering UA would be interest in:
- Mitochondrial biology
- Mitophagy
- Healthy muscle aging
rather than trying to duplicate creatine’s role.
What If You Don’t Want Creatine?
UA should not be viewed as:
a substitute version of creatine.
If you avoid creatine, UA does not provide the same:
- Phosphocreatine effect
- Strength evidence
- Lean-mass evidence
The two compounds are fundamentally different.
Urolithin A vs Creatine: What the Evidence Does Not Prove
Current research does not prove that:
- UA is better than creatine for muscle gain
- Creatine improves mitophagy better than UA
- UA and creatine have proven synergy
- Either supplement reverses aging
- Either prevents all age-related muscle decline
- Either replaces resistance training
- Either replaces adequate protein
- Either extends human lifespan
The Bottom Line
Urolithin A vs creatine: which is better for muscle aging?
If the outcome is:
muscle strength, lean mass and resistance-training support,
the answer is:
Creatine.
The evidence base is larger, older and more consistent.
Multiple meta-analyses in older adults show that creatine combined with resistance training can improve:
- Strength
- Lean tissue mass
- Selected functional outcomes
Urolithin A currently has:
a much smaller evidence base.
Its strongest scientific case is different.
UA is particularly interesting for:
- Mitophagy
- Mitochondrial quality control
- Selected muscle-endurance outcomes
- Mitochondrial biomarkers
So rather than asking:
“Which supplement replaces the other?”
a better model is:
Creatine supports muscle performance and adaptation; Urolithin A is being investigated as a mitochondrial quality-control compound.
For most adults focused primarily on healthy muscle aging:
resistance training + adequate protein + creatine
currently has the stronger evidence base.
Urolithin A may eventually become a useful additional tool.
But the science is not yet strong enough to put it on equal footing with creatine for:
strength and muscle preservation.
Frequently Asked Questions
Is Urolithin A better than creatine?
Not for muscle strength or lean mass. Creatine currently has substantially stronger evidence for those outcomes.
Is Urolithin A better than creatine for mitochondria?
UA is more specifically studied for mitophagy and mitochondrial quality control. Creatine primarily supports phosphocreatine-based cellular energy buffering.
Which is better for muscle gain?
Creatine.
Which is better for strength?
Creatine.
Which is better for muscle endurance?
The answer depends on the type of endurance. Creatine is stronger for repeated high-intensity performance, while UA has emerging evidence for local muscle fatigue resistance in older adults.
Does Urolithin A build muscle?
It has not been proven to significantly increase muscle mass.
Does creatine build muscle?
Creatine combined with resistance training can increase lean tissue mass more than training alone.
Can I take creatine and Urolithin A together?
No major incompatibility is established, but strong human evidence proving superior combined benefit is lacking.
Do creatine and Urolithin A work the same way?
No. Creatine supports phosphocreatine-mediated ATP regeneration, while UA is primarily studied for mitophagy and mitochondrial quality control.
Which is better after 50?
For preserving strength and lean mass, creatine currently has stronger evidence.
Which is better after 60?
Creatine still has the stronger muscle evidence. UA has interesting older-adult data involving muscle endurance and mitochondrial biomarkers.
Which is safer long term?
Creatine has the substantially larger long-term human safety database.
Is creatine bad for the kidneys?
Standard creatine supplementation has not generally been shown to damage healthy kidneys, although it may affect serum creatinine interpretation. People with kidney disease should seek individualized guidance.
Is Urolithin A safe for the kidneys?
Current trials have not identified a clear kidney toxicity signal, but the long-term safety database is smaller.
Which is better for sarcopenia?
Neither is a stand-alone treatment. Creatine combined with resistance training currently has stronger evidence for strength and lean tissue outcomes relevant to healthy aging.
Which is better for longevity?
Neither has been proven to extend human lifespan.
Should I take creatine before Urolithin A?
If your primary goal is muscle strength, muscle mass or resistance-training support, creatine currently has the stronger evidence base.
Related Celnovix Guides
- Creatine for Healthy Muscle Aging
- How to Maintain Muscle Mass After 50
- Urolithin A and Muscle Health
- Urolithin A After 50
- Urolithin A After 60
- Urolithin A and Mitophagy
- What Is Urolithin A?
- Urolithin A Benefits
- Urolithin A Dosage Guide
- How Long Does Urolithin A Take to Work?
- Urolithin A Side Effects
- Can You Take Urolithin A Every Day?
References
Liu S, et al.
The Impact of Creatine Supplementation Associated With Resistance Training on Muscular Strength and Lean Tissue Mass in the Aged: A Systematic Review and Meta-Analysis
Published in 2025, this analysis included:
8 randomized controlled trials
and:
482 older adults.
Creatine plus resistance training significantly improved:
- Lower-limb muscle strength
- Lean tissue mass
compared with placebo plus resistance training.
Impact of Creatine Supplementation and Exercise Training in Older Adults: A Systematic Review and Meta-Analysis
This 2025 meta-analysis included:
20 studies
and:
1,093 older adults.
Creatine combined with exercise significantly improved:
one-repetition maximum strength.
No significant benefit was found for total-body bone mineral density.
Chilibeck PD, et al.
Effect of Creatine Supplementation During Resistance Training on Lean Tissue Mass and Muscular Strength in Older Adults: A Meta-Analysis
This meta-analysis included:
22 studies
and:
721 participants.
Creatine during resistance training produced greater gains in:
- Lean tissue mass
- Chest-press strength
- Leg-press strength
than placebo.
Devries MC, Phillips SM.
Creatine Supplementation During Resistance Training in Older Adults—A Meta-Analysis
This earlier analysis included:
357 older adults.
Creatine plus resistance training increased:
- Fat-free mass
- Chest-press strength
- Leg-press strength
- Selected functional performance
more than resistance training alone.
Dao T, et al.
Effects of Urolithin A Supplementation on Muscle Health Outcomes in Humans From Randomized Controlled Trials
Published in 2026, this systematic review and meta-analysis included:
5 randomized controlled trials
and:
236 participants.
The pooled six-minute walking result favored UA by:
17.03 meters
but did not reach statistical significance.
Strength, endurance and mitochondrial outcomes were heterogeneous and treated as:
exploratory signals.
Liu S, et al.
Effect of Urolithin A Supplementation on Muscle Endurance and Mitochondrial Health in Older Adults
This randomized clinical trial studied:
66 adults aged 65–90.
Participants received:
1,000 mg/day Urolithin A
or placebo for:
four months.
Selected hand and leg muscle-endurance outcomes improved, while six-minute walking distance and maximal mitochondrial ATP production did not significantly improve compared with placebo.
Singh A, et al.
Urolithin A Improves Muscle Strength, Exercise Performance, and Biomarkers of Mitochondrial Health in a Randomized Trial in Middle-Aged Adults
This randomized trial included:
88 middle-aged adults.
Participants received:
- Placebo
- 500 mg/day Urolithin A
- 1,000 mg/day Urolithin A
for four months.
Selected strength measures improved, while the primary peak-power endpoint did not significantly improve.
The trial included industry sponsorship and author affiliations.
Evidence Transparency
The evidence bases for creatine and Urolithin A are not equivalent.
Creatine has:
- Decades of human research
- Hundreds of clinical studies
- Larger meta-analyses
- Longer-duration data
- Extensive exercise research
Urolithin A currently has:
- A small number of randomized trials
- Relatively small sample sizes
- Short intervention periods
- Significant methodological heterogeneity
- Several foundational industry-associated studies
For this reason, Celnovix does not present the two compounds as having equal evidence for muscle growth or strength.
Editorial Standards
Celnovix distinguishes between:
- Mechanism
- Biomarkers
- Muscle endurance
- Muscle strength
- Muscle mass
- Clinical function
These outcomes are not interchangeable.
We do not interpret:
- Mitophagy activation as proof of muscle growth
- Strength improvement as proof of lifespan extension
- Mechanistic complementarity as proof of supplement synergy
- Emerging evidence as equal to decades of replicated human research
Medical Disclaimer
This article is provided for general educational and informational purposes only and does not constitute medical advice, diagnosis, treatment or individualized supplement guidance.
Neither creatine nor Urolithin A should replace resistance training, appropriate nutrition or medical treatment.
People with significant kidney disease, liver disease, complex chronic illness, active cancer or multiple prescription medications should discuss supplement use with an appropriately qualified healthcare professional.
