You Gave Up the Spinach, the Almonds, the Chocolate. And You're Still Getting Stones.
There's a source the list was never able to reach — and a plant that's been used on the part it can't see for four hundred years.
You know the list.
Spinach, almonds, cashews, beets, rhubarb, chocolate, black tea. Some of them with an asterisk next to them, which somebody explained meant extra bad.
You know which one on that list you actually miss. Everybody has one.
You read the backs of things in supermarkets now. You've asked a waiter what's in the dressing. You've turned over a serving spoon at somebody else's dinner table looking for spinach, and hoped nobody noticed you doing it.
And every time another one came anyway, there was a voice that said you slipped. Somewhere in the last six months you got careless, and you did this to yourself. So you'd go back through it — the salad in Chicago, the granola bar at the airport — auditing your own eating from a hospital bed.
Most kidney stones are calcium and oxalate stuck together. Oxalate is in the foods on that list. That much is true and it's why the list exists.
Here's what the list doesn't say.
Your liver manufactures oxalate on its own. Every day. Regardless of what you eat.
It's a normal byproduct of your metabolism, the same as any other. It happens whether you had spinach for lunch or a plain chicken breast. It happens if you eat nothing at all. Your body is producing the exact compound on that list, internally, right now, while you read this.
Which means the list was never going to be the whole answer. Not because you executed it badly. Because there is a supply it cannot touch.
And there's a second thing the list has nothing to do with, which almost nobody explains.
Calcium and oxalate meet in the urine of essentially every person alive. Tiny crystals form constantly, in people who have never had a stone and never will. A crystal on its own is microscopic and it leaves without you ever knowing it existed.
It becomes a stone only if it does two things: binds to other crystals, and grabs hold of the kidney wall long enough to grow.
That's the difference between someone who has never had a stone and someone who has had four. Not whether crystals form. Whether they can hold on.
A list of foods has nothing to say about that. It's a list of foods. What happens after a crystal forms is chemistry, and it runs whether you ate the almonds or not.
What the list can reach
- The oxalate you eat
What it can't
- The oxalate your liver makes on its own, every day
- Whether the crystals that form bind to each other
- What shape those crystals take
- Whether they can grab hold of the kidney wall
Six years of perfect execution on the left column, while everything in the right column ran untouched.
Where Each One Stops
The food list. Lowers what you take in. Genuinely worth doing, and the worst offenders are worth avoiding. It has no reach at all into what your own body produces, which is why the list never quite ends and never quite works.
Drinking more water. Raises urine volume, lowers concentration. It's the single best-evidenced thing you can do and it's free. It doesn't change whether a crystal can grab hold of anything.
Cutting calcium. This one is worth naming because a lot of people do it on their own and it can work against you. Dietary calcium binds oxalate in your gut, before it ever reaches your kidneys. Cutting it can leave more oxalate free to be absorbed, not less. If you've been avoiding calcium to be safe, that's a conversation worth having with your doctor.
Three levers. Two of them aimed at intake, one at volume. None of them aimed at what happens once a crystal has formed anyway.
"Six years. No peanut butter, no iced tea, no chocolate, reading the back of every jar in the store. And I still ended up on a bathroom floor at four in the morning wondering which meal I'd got wrong.
Nobody told me my own body was making the stuff. Fifteen appointments and not one person said it.
I'd been blaming myself for a game where most of the board was hidden from me."
Paul H., 51 — Michigan
What Chanca Piedra Does
There's a small green weed that grows across the Amazon basin. Roadsides, gardens, cracks in pavement. Completely ordinary there, and almost unknown here.
What the research on it looks at is not dietary oxalate and not urine volume. It's the crystal itself, and whether it can hold on.
It interferes with crystals binding to each other. They still form. They just don't lock together into a mass. A crystal that stays a single crystal leaves the way it does in people who never form stones.
It changes the shape the crystals form in. This is the part most people have never heard. Calcium oxalate crystallizes in two different habits. One of them is jagged and grips kidney tissue. The other is smoother and passes. The laboratory work on chanca piedra shows a shift toward the second one.3
And it reduces how well crystals adhere to the kidney lining. A crystal that can't grab the wall never gets the chance to grow into anything.
None of that is about what was on your plate. That's the entire point of it.
In one randomized trial in calcium stone formers, participants taking it also saw a 29% reduction in urinary calcium.2
And this is why it's called what it's called.
Chanca is Quechua. Piedra is Spanish. Together, stone breaker.
chanca piedra — “stone breaker”
Not a brand name somebody came up with. That's what people in Peru and Brazil have called that plant for centuries, because that is what they use it for. The name came from the job, four hundred years before anyone ran a study on it.
So why has nobody in your care ever said the words?
It isn't a conspiracy. It's a plant that grows on another continent, used by people who mostly aren't the ones writing American clinical guidelines. Our medicine is world-class at the stone that already exists. It has never been especially interested in what's been simmering on a stove in Brazil.
The Part the List Couldn't Reach
There's a second piece to this, and it's the one aimed directly at the half no food list can touch.
Vitamin B6 supports the enzyme pathway involved in the oxalate your own body produces. In studies of stone formers with elevated urinary oxalate, B6 has been associated with meaningful reductions in how much of it ends up in the urine.5
Magnesium works on the other side. It binds oxalate directly, and it carries citrate into the urine while it does it.
That's the supply the list was never able to see. Not the almonds. The oxalate your liver made this morning while you were asleep.
The traditional preparation is a decoction. The plant simmered in water and drunk. That's the form four centuries of use is built on.
A capsule of dry powder isn't a smaller version of that. It's a different thing.
And every dose goes down with a full glass of water, which means the best-evidenced intervention in this entire field stops being a separate act of discipline you have to remember at 4pm. It's just how the thing is taken.
Most of what's sold is ground-up whole plant with no standardization. No stated dose, no consistency between batches, and nothing else in the bottle.
Which is the whole reason Stone Clear exists.
The plant is the answer, so we built the product around it. 500mg of standardized chanca piedra, disclosed on the label, at a dose you can actually check.
Then everything a complete formula should have alongside it. The citrate your urologist would recognize. The oxalate side no food list can reach. The pH side. Not to replace the plant, but so nothing is left running while it does its work.
Six Active Ingredients. One Complete Formula.
Standardized and disclosed. The crystal side: whether they bind to each other, what shape they form in, and whether they can grab hold.
The same compound urologists prescribe. Citrate binds calcium in the urine, so less of it is free to pair with oxalate. It's the marker a 24-hour urine test actually reports back to you.
Two jobs at once. It carries more citrate into the urine, and magnesium itself binds oxalate. Around 60mg elemental magnesium.
Completes the citrate load and handles the pH side. It also does the flavor work, which matters more than it sounds when something has to be drinkable every morning for a year.
Aimed at the half no food list can reach. B6 supports the enzyme pathway involved in the oxalate your own body produces.
A crystallization inhibitor found naturally in whole grains and beans. Almost nothing on the shelf includes it.
Across the three citrate salts, roughly 15 mEq of alkali citrate in the morning glass.
What the Research Says
Figures are from published studies of individual ingredients, at the doses used in those studies, which differ from the doses in this product. They describe what has been observed for an ingredient in research settings. They are not claims about this product. Individual results vary. 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.
The First 90 Days
The citrate goes to work the first morning. Urine pH and citrate levels respond within days, not months. There's nothing to feel, because this is chemistry, not caffeine. It's happening whether you notice it or not.
One stick, one glass, and you've stopped deciding about it. The travel pack goes in the bag without a thought. For most people this is the point it moves into the same category as brushing your teeth.
You'd been white-knuckling a gallon a day and falling off by mid-afternoon. Now the morning glass is the anchor and the rest of the day is just drinking. First stretch in years where hydration isn't a running scoreboard in the back of your head.
The quiet one, and the one people notice last. You stop running the calculation every time your back twinges. You stop mapping the drive to the hospital before a road trip. Somebody asks how the stone thing is going and you have to stop and think about it, because you haven't thought about it in weeks.
Timeline reflects experiences some customers have shared — not a guarantee of results, and individual results vary.
The Finish-It Guarantee
Use every stick. Take all 90 days. If it isn't for you, tell us and we'll refund the order in full. No questions, and no need to send anything back.
We'd rather you finished the routine than half-tried it and wondered.
What People Say
"The part that got me was the water. I'd been white-knuckling it and falling off by 3pm every day. Now it's eight ounces in the morning and I stopped keeping score."
Dana P., 47 — Ohio
"Six months in. It sits next to the coffee so I don't forget it, and honestly I don't think about any of this the way I used to. That's what I'd tell somebody."
Ray M., 61 — Arizona
Individual experiences. Results vary.
Common Questions
What is Stone Clear?
A daily drink mix for kidney support. Six actives at disclosed doses, aimed at four parts of your urine chemistry. One stick in 8oz of water each morning. It's a dietary supplement, not a medicine, and it's built to sit alongside whatever your doctor already has you doing.
Does this mean I can stop following my food list?
No. Nothing here is a reason to change how you eat, and the dietary guidance you've been given came from someone who knows your history. What this addresses is the part of the picture a food list was never able to reach. Any change to your diet is a conversation for you and your doctor.
Can I take it if I'm on prescription potassium citrate?
Talk to your doctor or pharmacist first, and don't change a prescription on your own. Prescription citrate is guideline-recommended and it works. Stone Clear also contains citrate salts, so your prescriber is the right person to look at the total and tell you what makes sense.
How do I take it?
One stick in a full 8oz glass of water, once a day. Most people do it in the morning. The full glass isn't a suggestion, it's part of how the routine works.
How does it taste?
Citrus-forward and tart, which is what happens when the actives are citrate salts. It was formulated to be something you'll finish every morning rather than brace for.
Can I take it while I'm passing a stone?
If you're in acute pain, see a doctor. Severe pain, fever, vomiting or blood in the urine need medical attention quickly, and no supplement is a substitute for that. Stone Clear is a daily routine built for the days in between.
Is it safe? Side effects?
Common supplement ingredients at everyday doses. The most frequent effect with citrate salts is mild digestive upset, which taking it with food usually settles. If you have kidney disease, are on a potassium-restricted diet, take potassium-sparing diuretics, ACE inhibitors or ARBs, or are pregnant or nursing, check with your doctor first. The potassium content is the specific reason for that.
Do I need to know my stone type?
It helps. Most stones are calcium oxalate but not all, and the right approach genuinely differs. If you've never had a stone analyzed or a 24-hour urine done, both are worth asking your doctor about. They'll tell you more about your own chemistry than any product page can.
The Half That Was Never on Your Plate
You executed the list perfectly for years while your own liver kept producing the thing you were cutting.
That's the part this is aimed at.
- The plant nobody told you about — chanca piedra 500mg, standardized
- A complete formula — targets four mechanisms behind stone formation, not one
- B6 and magnesium — aimed at the oxalate no food list can reach
- One stick, one glass, once a day. Thirty seconds in the morning
- 90 days to decide. Use every stick and still get your money back
References
- Nishiura JL, Campos AH, Boim MA, Heilberg IP, Schor N. Phyllanthus niruri normalizes elevated urinary calcium levels in calcium stone forming patients. Urol Res. 2004;32(5):362–366. PMID 15221244
- Barros ME, Schor N, Boim MA. Effects of an aqueous extract from Phyllantus niruri on calcium oxalate crystallization in vitro. Urol Res. 2003;30(6):374–379. PMID 12599017
- Urocit-K (potassium citrate) FDA prescribing information.
- Ortiz-Alvarado O, Miyaoka R, Kriedberg C, et al. Pyridoxine and dietary counseling for the management of idiopathic hyperoxaluria in stone-forming patients. Urology. 2011;77(5):1054–1058. PMID 21334732
- Kidney Stone Pathophysiology, Evaluation and Management: Core Curriculum 2023. Am J Kidney Dis.
THIS IS AN ADVERTORIAL AND NOT A NEWS ARTICLE, BLOG, OR CONSUMER PROTECTION UPDATE. © 2026 Hale / Cornerstone Studio.
This is an advertisement. The information here is not medical advice and is not a substitute for the advice of your doctor. Stone Clear is a dietary supplement intended to sit alongside, not replace, prescribed care. It is not a treatment for kidney stones or any other medical condition, and no claim is made that it prevents, reduces or stops stones. Do not start, stop or change a prescription without speaking to your prescriber.
Nothing on this page is dietary advice. If you have been given guidance about what to eat, it came from someone who knows your history and your stone type. Do not change how you eat based on anything here without speaking to your doctor.
Persistent or severe symptoms deserve evaluation. Severe flank or back pain, fever, vomiting or blood in the urine require prompt medical attention. If you form stones repeatedly, ask your doctor about a stone analysis and a 24-hour urine collection.
"Stone breaker" is a traditional common name reflecting long-standing folk use of the plant. It is not a description of what this product does.
Individual experiences vary. 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 site is not part of, or endorsed by, Facebook or Meta Inc.
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