For peptide & GLP-1 users
500mg Urolithin A + NMN + TMG
You're on a protocol to get leaner — and quietly terrified you'll lose muscle doing it.
You're on a protocol to get leaner — and quietly terrified you'll lose muscle doing it.
The peptide is working. The scale is moving. But you've read the threads and heard the warnings: drop weight fast enough and a chunk of what you lose isn't fat, it's lean muscle. Strength dips. You look smaller but softer.
So you eat more protein, you train, you hope. And you still can't shake the feeling that every week on a hard cut is a week your muscle is paying for.
Here's what almost nobody tells you: the deciding factor isn't just protein and training. It's whether the mitochondria inside your muscle can keep making energy while you're in a deficit. That's the layer you haven't been supporting.
It's not just the cut. It's your muscle mitochondria.
It's not just the cut. It's your muscle mitochondria.
Your peptide sends the signal. But the muscle that has to hold your strength runs on mitochondria — the tiny engines inside every fiber that turn fuel into the ATP your muscle contracts on. Push hard or cut fast and those engines get overworked, and the worn-out ones never get cleared. Fewer working engines means less force, faster fatigue, slower recovery. No amount of protein fixes a power-supply problem inside the cell.
Losing strength on a cut isn't weakness. It's a fuel problem.
Losing strength on a cut isn't weakness. It's a fuel problem.
When your lifts stall or drop mid-cycle, it's easy to blame yourself — not eating enough, not training hard enough, getting older. But often your effort never dropped. Your muscle's supply of cellular energy did. When mitochondria decline, every rep costs more and recovery drags. That's not a discipline problem. That's biology, and biology responds to the right input.
“Peptides can drive fat loss faster than the muscle underneath is prepared for. What decides whether you keep your strength is mitochondrial capacity in the muscle itself. That's the layer most people never think to support — and it's exactly where Urolithin A acts.”
Two gummies. The clinical 500mg dose of Urolithin A, plus NMN and TMG.
Two gummies. The clinical 500mg dose of Urolithin A, plus NMN and TMG.
Precursor is two gummies a day. That's the whole ask. Inside is the clinical 500mg dose of Urolithin A, the compound with human data on muscle strength and endurance, paired with 250mg NMN to rebuild NAD+ (the fuel your mitochondria run on) and 250mg TMG to protect the methylation that keeps NMN working. No needles, no new protocol on top of your protocol. You take them with your coffee. That's it.
Most Urolithin A products are quietly underdosed.
Most Urolithin A products are quietly underdosed.
A lot of brands print Urolithin A on the label, then hide a tiny useless amount so they can charge less and still make the claim. You take it for a month, feel nothing, and write it off. You never actually tried it. The human muscle data is built on 500mg. Precursor gives you the full 500mg — plus the NMN and TMG that keep the whole cellular energy loop running — not a marketing dose.
What a few weeks on it actually feels like.
What a few weeks on it actually feels like.
This is not a stimulant and you won't feel wired. It's quieter and better than that. A few weeks in, the mid-workout fade comes later. Your lifts feel like they've got their base back under them. You recover between sessions instead of dragging into the next one. On a cut, that's the difference between holding your strength and watching it slide — it feels less like a boost and more like the floor under your training got raised.
“Recovery is a mitochondrial process. The muscle fibers that repair after a hard session run on ATP, and when cellular energy drops, recovery is one of the first things to suffer. Urolithin A works upstream of any recovery drink — on the power those cells run on.”
Recovery speeds up, and you stop training into a hole.
Recovery speeds up, and you stop training into a hole.
On a hard protocol, recovery is where muscle is kept or lost. Train hard, under-recover, and you break down more than you rebuild. Repair is a mitochondrial job — it runs on the ATP your power plants make. When fresh, fully-charged mitochondria come online, recovery is usually the first thing you feel improve. You bounce back between sessions, and the work you put in actually sticks as muscle.
Mitophagy, in plain English.
Mitophagy, in plain English.
Mitophagy is your body's cleanup crew for cells. It clears out the dead, worn-out mitochondria clogging your muscle and grows fresh, fully-charged ones in their place. Push hard or cut fast and that cleanup falls behind, so dead engines pile up and your muscle makes less power. Urolithin A puts the crew back to work while NMN rebuilds the NAD+ that fuels them. Fresh engines, real force. It's the layer your peptide protocol never touched.
"Down 22 lbs on my GLP-1 and my strength held. Every cut before this I'd watch my lifts collapse. This time they didn't. That's the whole reason I'll keep taking it."
"I run BPC and MOTS-C for recovery and I was still training into a hole. Added these and I actually bounce back between sessions now. Wish I'd stacked it sooner."
"On semaglutide the fear was going skinny-fat. Kept my protein high, kept lifting, added Precursor. Held my strength on the way down. Came out lean, not soft."
"I lift heavy and hit my protein and my numbers had still stalled on a cut. After two months my strength genuinely came back without changing my training."
Every week on a cut without support, the deficit gets deeper.
Every week on a cut without support, the deficit gets deeper.
It's tempting to file this under 'later' and tell yourself you'll deal with muscle loss after the cut. But it doesn't wait. Every week your mitochondria fall behind on a deficit, the more strength quietly leaves and the harder it is to rebuild after. The muscle you lose fast comes back slow. Waiting isn't neutral — it has a cost, and your strength has been paying it.
90 days to prove it to yourself. The risk is ours.
90 days to prove it to yourself. The risk is ours.
You're tired of buying the next thing that does nothing, so don't take our word for it. Right now Precursor is up to 55% off with a 90-day money-back guarantee. Take the gummies, run your protocol, train your program, and watch what your strength and recovery do on the cut. If you don't feel the difference, you get your money back — feel it or send it back, even empty. No fight, no fine print.
The most-researched cellular compound since creatine.
The most-researched cellular compound since creatine.
Urolithin A isn't a trend. It's been put through 25+ randomized, placebo-controlled human trials for what it does inside the muscle cell — including direct data on strength and endurance — while most of what gets sold to peptide users has been put through none.
When everything else is a maybe, take the studied one.
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Experts
Why we built itThe researchers and clinicians who put this cellular stack on our radar.
“Your peptide sends the signal. Urolithin A, NMN and TMG make sure the muscle cell still has the power to act on it. On a cut, that cellular power is what decides whether you keep your strength.”
“I spent years watching lifters lose strength on aggressive cuts while doing everything 'right.' The answer was in the muscle mitochondria. That is exactly where Urolithin A works.”
“It's the rare compound with randomized human trials on muscle strength and endurance behind it. That's the bar I want before I tell an athlete anything is worth their money.”
How to Take It
3 Simple StepsTake two gummies a day, any time. That is the whole protocol. Done in seconds.
What's Inside
Third-Party Tested
How It Works
Down 22 lbs on my GLP-1 and my strength held. Every cut before this I'd watch my lifts collapse. This time they didn't. That's the whole reason I keep taking it.
I run BPC and MOTS-C for recovery and I was still training into a hole. Added these and I actually bounce back between sessions now. Wish I'd stacked it sooner.
On semaglutide the fear was going skinny-fat. Kept my protein high, kept lifting, added Precursor. Held my strength on the way down. Came out lean, not soft.
I lift heavy and hit my protein and my numbers had still stalled on a cut. After two months my strength genuinely came back without changing my training.
First cut in years where I didn't feel weaker every week. My working sets actually held. That never used to happen.
Recovery was my bottleneck on a hard block. I'd tried creatine, extra EAAs, all of it. This is the first thing that let me train hard back-to-back days.
My coach kept telling me to just eat more and train harder. I already did all of it and still lost strength. This was the missing piece, not more effort.
Six weeks in my lifts stopped sliding and started creeping back up, mid-cut. My training partner noticed before I said anything.
On a peptide protocol I'd be wrecked for two days after leg day. Now I'm recovered by the next morning. Feel resilient again.
I'd accepted going softer was just the tax on a cut. It wasn't. Held more strength this time than any diet before.
Everyone kept telling me protein and progressive overload. I already nailed both. The difference here was real and it wasn't willpower.
GLP-1 killed my appetite and my strength was going with the fat. This filled the gap the protein shakes never reached.
I'm an endurance guy and my long-run pace had cratered on a cut. My stamina is finally climbing back instead of sliding.
The mid-workout wall used to flatten me on low calories. I haven't hit it in weeks. Not buzzing, just steady, which is all I wanted.
My whole reason for trying it was not going skinny-fat on sema. Down 18 lbs and my bench is exactly where it was. Sold.
I'd read every Reddit thread and spent hundreds on stacks that did nothing. I was a skeptic. This one I'd actually repurchase.
Recovery just vanished when I started an aggressive cut. I'm finally waking up feeling repaired instead of run-down.
Not a miracle, and I like that they don't pretend it is. But week by week my strength held while the fat came off. That's the win.
Losing muscle was the scariest part of the whole protocol. Keeping my strength through the cut gave me my confidence back.
I'd accepted that dropping weight meant dropping strength. It didn't have to. Wish I'd found the cellular angle two cuts ago.
Steadier energy in the gym, faster recovery, and my lifts held on a deficit. Three things I'd given up on, quietly handled.
My macros were always dialed while my strength still slid. Someone finally explained why, and then it actually got better.
Felt flat and weak in every session on the cut. That's come back up. My working weights feel like mine again.
I'm 53, still lifting, and on a protocol. This is the first cut where I climbed back into my strength instead of losing it. Worth more than I paid.
“Protein gives the muscle raw material. It can't power the mitochondria that turn it into strength.”
Protein is non-negotiable and you should absolutely keep hitting it. It gives your muscle the raw material to rebuild. What it can't do is power the mitochondria that turn that material into force and recovery — which is why people can eat all the protein in the world and still lose strength on a hard cut. Peppy works one layer deeper, on the cellular power your muscle runs on. The two sit together.
“Each one supports one piece. None of them rebuilds the engine that makes the energy.”
You took the creatine for output, the BCAAs and EAAs for recovery, the whole shelf. Each one works on one piece of the puzzle. None of them clears the worn-out mitochondria or rebuilds the NAD+ your muscle cells need to make energy in the first place. Peppy is that missing layer, the one place the other supplements never went. Creatine and Peppy actually stack well — one fuels output, one rebuilds the engine.
“More signal doesn't help if the muscle cell can't power the execution.”
When your strength slips, the instinct is to add more — another peptide, more volume, harder sessions. Sometimes that helps. But your peptides send the signal, and if the muscle mitochondria can't power the execution, more signal just means more you can't act on — and harder training on an under-recovered muscle costs you strength. Peppy rebuilds the cellular power underneath. Always run any change to your protocol past your provider first.
Two Gummies Daily.
The Clinical Dose.
Worth More Than You Pay.
Will this interfere with my peptides or GLP-1?
No. Precursor is a supplement stack — Urolithin A, NMN and TMG — not a peptide and not a hormone. It works one layer deeper, on the muscle mitochondria your protocol relies on but doesn't rebuild. Your peptides send the signal; Precursor helps your cells have the power to execute it. Safe to take alongside, but run any routine past your prescribing provider first.
I already eat enough protein and lift. Do I need this?
Keep doing both — they're the foundation and this doesn't replace either. But protein gives your muscle raw material and training gives it the stimulus; neither rebuilds the worn-out mitochondria that make the energy. On a hard cut that's often where strength quietly slips. This is the cellular layer the protein and the training don't reach.
How long until I notice a difference?
Urolithin A works at the cellular level, so it builds gradually over several weeks of daily use. Everyone responds differently and results are not guaranteed, which is why every first order is backed by the 90-day money-back guarantee.
Is this stack safe?
Urolithin A is a well-studied compound your body normally produces from foods like pomegranates and walnuts; NMN and TMG are widely studied cellular-energy compounds. It's made here in a third-party-tested facility. If you are pregnant, nursing, or on medication, check with your doctor first.
How many gummies, and what's the dose?
Two gummies a day deliver 500mg Urolithin A, 250mg NMN and 250mg TMG — the amounts behind the research. A full pouch is a 30-day supply.
Can I cancel easily? What if I don't feel anything?
Yes. Pause or cancel anytime in a couple of taps. Cellular support can be quiet at first, so give it a fair, consistent run through a training block, and if you're not feeling the difference the 90-day money-back guarantee makes it right — feel it or send it back, even empty.
