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Foundation Gummies
Urolithan A 500MG
The only compound on earth proven to clear damaged mitochondria and replace them with new, fully functional ones.
More Energy & Endurance
Stronger Without Changing Training
Less Inflammation, Better Recovery
Sharper Mental Clarity
Better Sleep Quality
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What Is Urolithin A?
A naturally occurring compound that activates mitophagy, the process of clearing damaged mitochondria and replacing them with new ones. Your gut bacteria can produce it from foods like pomegranates, but only 40% of people make it naturally. Direct supplementation bypasses the guesswork.
What It Does
Clear. Rebuild. Perform. It removes damaged mitochondria, triggers your body to build new ones, and increases the energy available to every cell. The only compound proven to activate mitophagy in humans.
Benefits & Timeline
Week 1: Absorbed and active at a cellular level. Week 3: Immune cell composition measurably improved. Month 2: Energy and recovery differences start showing. Month 4: Full clinical effects on strength, endurance, and inflammation.
The Research
Published in JAMA, Nature, Cell, and Springer. 25 human clinical trials. 2,200+ participants. 18 years of research. Every major claim backed by randomised, double-blind, placebo-controlled data.
Why Mitochondria Matter
Your body has 10 million billion mitochondria. They power every cell. Every year you age, they break down faster than your body replaces them. That's where your energy goes. That's why inflammation builds. That's why recovery slows down.
"Urolithin A is one of the only nutritional compounds where the clinical evidence matches the mechanistic promise.”
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Backed By The World's Leading Journals
The Only Compound Proven To Clear Damaged Mitochondria And Rebuild Them Stronger
18 years of clinical research into every gummy. 25 human trials. 2,200+ participants.
Real Results, Real Customers
More Energy
93%
of participants felt a noticeable boost in daily energy with more endurance.
Clinical Result
Stronger
98%
Of participants felt stronger without making any changes to their training.
Clinical Result
Recovered
91%
Participants reported better sleep, less inflammation, stronger immune system.
Clinical Result
Sharper
95%
Of participants noticed sharper focus and improved mental clarity.
Clinical Result
1
Removes damaged mitochondria
2
Creates new, fully functional mitochondria
3
More energy to every cell in your body
Clinically Proven To Make You Feel Like This
More Energy & Endurance
Mitochondria produce your energy. More healthy ones, more of it.
Stronger Without Changing Training
Muscles are packed with mitochondria. Better mitochondria, more force.
Faster Recovery
Muscle repair is energy-intensive. Healthy mitochondria get it done faster.
Less Joint Stiffness & Inflammation
Damaged mitochondria trigger inflammation. Remove them, it stops.
Sharper Mental Clarity
Your brain uses 20% of your energy. Mitochondria make it.
Better Sleep Quality
Your body repairs during sleep. That repair runs on mitochondria.
18 Years Research
300+ Studies
Gold Standard Trials
Third Party Tested
How One Compound Rebuilds Your Cellular Engine
Step 1
Clear
Urolithin A activates mitophagy, your body's natural process for identifying and removing damaged mitochondria that are producing less energy and more waste.
Step 2
Rebuild
With damaged mitochondria cleared, your cells trigger mitochondrial biogenesis, producing new, fully functional mitochondria to replace what was lost.
Step 3
Perform
More healthy mitochondria means more energy available to every system in your body. Muscles, brain, immune cells, recovery. Everything runs better.
Why Urolithan A?
Increases Muscle Strength
Improves Endurance
Works Without Exercise
Reduces Chronic Inflammation
Rejuvenates Immune Function
Improves Cellular Energy Production
Replaces Damaged Mitochondria
Addresses Root Cause of Age-Related Decline
Makes Your Other Supplements Work Harder
Onset
Creatine
Partial
Partial
CoQ10
Partial
Partial
Partial
NAD+/NMN
Partial
Partial
Ashwagandha
Partial
Partial
Rated 4.8
130,000+ Customers
What People Are Saying
Finally sleeping through the night
I wasn't expecting sleep to improve but by week three I was waking up actually feeling rested for the first time in years. Energy through the day is steady now too. No crashes.
Daniel W.
Verified Buyer
Joint pain is basically gone
I've had chronic knee inflammation for years. Two months in and I'm squatting pain-free for the first time since my 30s. I didn't change anything else. Just added Onset.
Marcus J.
Verified Buyer
Bought for the science. Stayed for the results.
I read every trial before buying. JAMA, Nature, Cell Reports. The data is real and now I can feel what the data showed. Month three and my endurance in the gym is noticeably better.
Stephen P.
Verified Buyer
What To Expect With Onset
Week 1
Week 3
Month 2
Month 3
Month 4
Month 5+
Activation
Urolithin A is absorbed within 6 hours of your first dose. Mitophagy pathways begin activating at a cellular level. Your body is starting the cleanup.
Benefits
UA and its metabolites detected in plasma, confirming absorption and bioavailability.
Mitophagy signals begin identifying damaged mitochondria for removal.
Acylcarnitine levels start shifting, an early marker of improved mitochondrial efficiency.
No noticeable changes yet. The process is cellular, not perceptual.
First Response
Your immune system is the first to respond. By day 28, measurable changes in immune cell composition are already visible in blood work.
Benefits
Naive CD8+ T cells increase, a sign of immune rejuvenation.
Fatty acid oxidation capacity up 14.7% in immune cells.
Natural killer cell count raised.
Some users begin noticing subtle improvements in energy and recovery.
Turning Point
This is where most users report first feeling the difference. Endurance improvements begin showing in the clinical data. Inflammation markers are trending down.
Benefits
Peak VO2 improvement already manifesting at the 500mg dose.
Muscle endurance measurably improving in hand and leg muscles.
CRP beginning to separate from placebo.
Energy feels more consistent. Recovery between sessions noticeably faster.
Momentum
The gap between you and baseline is widening. Strength, endurance, and inflammation are all moving in the right direction.
Benefits
Strength gains accelerating toward the 12% improvement seen at 4 months.
Inflammation continuing to drop while placebo group trends upward.
Mitochondrial gene expression significantly upregulated in skeletal muscle.
Recovery, energy, and physical performance feel reliably different from month one.
Full Clinical Effect
This is the dose and duration used in the landmark trials. You're now at the performance level the published data showed.
Benefits
12% increase in muscle strength without exercise change.
10% improvement in peak aerobic endurance.
CRP significantly reduced while placebo increased 22%.
Plasma acylcarnitines and ceramides reduced, indicating improved mitochondrial efficiency.
Compounding
Mitochondrial biogenesis is ongoing. Your body is continuously clearing damaged mitochondria and building new ones. The benefits maintain and build.
Benefits
New mitochondria replacing old ones on an ongoing cycle.
Strength, endurance, and inflammation benefits maintain with continued use.
Immune resilience stays elevated as long as supplementation continues.
Every system that runs on cellular energy continues to benefit.
The Clinical Evidence
Urolithan A
Placebo
Strength & Endurance You Can Feel
12% stronger. 10% more aerobic endurance. In 4 months. No change to exercise routine. 88 participants in a randomised, double-blind, placebo-controlled trial.
Clinical Result
Inflammation That Finally Goes Down
CRP, a key marker of systemic inflammation, dropped in the Urolithin A group while rising 22% in placebo. Two lines going in opposite directions over 4 months. 66 participants.
Clinical Result
Your Supplements Actually Working
Every supplement you take depends on cellular energy to be absorbed and used. Urolithin A measurably increased maximal ATP production in 4 months across 66 participants in a double-blind trial.
Clinical Result
An Immune System That Fights Back
Naive CD8+ T cells increased. Fatty acid oxidation capacity up 14.7%. Natural killer cell count raised. All in 28 days. 50 participants in a randomised, placebo-controlled trial.
Clinical Result
What Experts Are Saying About Urolithin A
Integrative Longevity Physician, DO
What Else Changes When Your Mitochondria Work
Every cell in your body runs on mitochondrial energy. When you fix the engine, the benefits go further than you expect.
Heart Health
Your heart has more mitochondria than any organ. Healthier mitochondria, stronger heart.
Brain Function
Your brain burns 20% of your energy. Better mitochondria, clearer thinking.
Skin & Aging
Mitochondrial decline shows on your face first. Renewal does too.
Gut Health
Urolithin A is a postbiotic. It strengthens your gut barrier and reduces intestinal inflammation.
Peptide Performance
Every peptide depends on ATP to signal and repair. More cellular energy, more of your protocol works.
Supplement Absorption
Cellular uptake runs on energy. When your cells have more, everything you take gets used better.
Try It For 90 Days. Feel It Or Get Every Cent Back.
We make sure every customer actually gets results or we refund you 100% of your investment. We're so confident you'll feel the difference, we bear all the risk.
18 Years Research
300+ Studies
Gold Standard Trials
Third Party Tested
Rated 4.8
130,000+ Customers
Frequently Asked Questions
What is Urolithin A?
Urolithin A is a naturally occurring compound produced by gut bacteria when you eat foods like pomegranates, berries, and walnuts. However, only about 40% of people produce it naturally. It is the only compound clinically proven to activate mitophagy, the process of clearing damaged mitochondria and triggering your body to build new ones.
How long does it take to work?
Urolithin A is absorbed within hours and begins activating mitophagy at a cellular level in the first week. Immune cell improvements were measured at 28 days. Most users report noticeable changes in energy and recovery around month 2. Full clinical effects on strength, endurance, and inflammation were seen at 4 months in the published trials.
Can I take this with other supplements?
Yes. Urolithin A works at the mitochondrial level, which is upstream of most other supplements. It improves the cellular energy production that every other supplement depends on to be absorbed and utilised. It pairs well with creatine, CoQ10, omega-3s, and protein. No known interactions have been reported across multiple clinical trials.
Why can't I just eat pomegranates?
Only about 40% of people have the right gut bacteria to convert pomegranate polyphenols into Urolithin A. Even those who can produce it naturally generate far less than the clinical dose. Direct supplementation delivers 6x more Urolithin A than pomegranate juice and bypasses the guesswork entirely.
Is it safe?
Urolithin A has FDA GRAS (Generally Recognised as Safe) status. It has been tested across multiple randomised, double-blind, placebo-controlled clinical trials with no serious adverse events reported. Every batch of Onset is third-party tested for purity, potency, and heavy metals.
What is your guarantee?
Onset comes with a 90-day money-back guarantee. If you're not satisfied for any reason, contact us for a full refund. No questions asked.