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BIND OXALATE

SMART MEALS

OxFree — Oxalate Reducer

4.8 · 100+ reviews across the web
Rated 4.8 out of 5

Eat the foods you love We’ll handle the oxalate.

120 calcium citrate/malate + B6 tablets. Binds dietary oxalate at the meal — before it can crystallize in your kidneys. Two tablets with meals.

Avg $29.99 /mo $39.99 SAVE 25%
Three bottles ($89.97) every 90 days. Skip or cancel anytime.
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Doctor-formulated
As trusted by urologists since 2018
Cleveland ClinicMayo ClinicUCSF HealthJohns Hopkins
Works at the meal
Calcium citrate binds dietary oxalate in the gut — before it can reach your kidney..
Dialed dosing
Stone-safe calcium-citrate/malate, paired with B6 for full oxalate coverage.
No diet to memorize
Eat the spinach. Have the chocolate. OxFree gives back the foods low-oxalate diets remove.
Stack the protection
Pairs with CitraTabs and LithoLyte 10 mEq for full-spectrum kidney health.
Woman holding an OxFree bottle in a sunlit field
OxFree bottle on a wooden tray beside spinach and a 24-hour urine Stone Risk Report
How it works

Bind oxalate at the table — not at the kidney.

Studies show calcium taken with meals can reduce urinary oxalate by 40–60% in stone formers.*

The trick is timing and form. Calcium citrate, taken with the meal, binds the oxalate in your gut.

Shop OxFree
  1. 01

    Take 2 with high-oxalate meals

    Pair OxFree with the meals featuring spinach, almonds, chocolate, beets, or sweet potato — twice a day.

  2. 02

    Calcium binds oxalate in the gut

    Elemental calcium meets dietary oxalate before absorption and forms an insoluble complex that exits in stool.

  3. 03

    Less oxalate reaches your urine

    Lower urinary oxalate means less chance of calcium-oxalate crystals — the most common stone type.

Eat with confidence

The foods that scared you. Now back on the table.

Most stone-formers leave the urologist with a printout: avoid these 40 foods. The list reads like everything healthy. OxFree is built so you don't have to live by it — take it with the meal, and the oxalate gets bound in your gut.

"I tell patients: a low-oxalate diet works on paper. OxFree works in real life."
— Ryan Holland, MD · Founder
Compare

Why people switch to OxFree.

Oxalate reduction has historically meant restrictive diets or generic calcium pills with the wrong timing. OxFree was built for the way you actually eat.

Compare
OxFree
This product
Low-ox diet
Generic calcium
Mechanism
Binds dietary oxalate in gut
Avoid foods entirely
Variable — wrong form may raise risk
Dosing
2 tablets with each meal
Lifelong food restriction
Once-daily — usually wrong timing
Form
Calcium citrate/malate (stone-safe)
N/A
Calcium carbonate (varies)
Prescription required
No
No
No
Typical 30-day cost
$29.99 (subscribe)
Free — but no chocolate
$10–$30
FSA / HSA eligible
Yes
No
Sometimes

Swipe to compare →

* OxFree is a dietary supplement, not a prescription medication. Talk to your physician about what is right for your care plan.

The science

Reduce Dietary Oxalate.

Bind oxalate before it reaches your system.

OxFree's calcium alkali (citrate/malate) meets oxalate in your gut — long before it reaches the kidney — and binds it into an insoluble complex that exits in stool. All before crystals start to form.

40–60%
Reduction in urinary oxalate*
100 mg
Elemental calcium per dose
2× / day
With the highest-oxalate meals
Plate of high-oxalate foods
How to take it

Two tablets. With your two biggest meals.

Timing is everything. Take with the meal — not before, not after — so the calcium is in your gut at the same time as the oxalate. Your urologist may adjust based on 24-hour urine results.

Lunch
Two tablets with foods that are high in oxalate.
Dinner
Two tablets with dinner — especially if it features spinach, beets, sweet potato, or chocolate dessert.
Hydration
Pair with LithoLyte for electrolyte balance and continued urinary citrate coverage.
Backed by professionals

From "what can I eat?" to "No food worries".

4.7 out of 5 · 142 verified reviews
★★★★★

"I cried the first time I ate leafy greens again."

Years of avoiding it after my first stone. My doctor told me about OxFree and now I have it in salads twice a week. No new stones in 18 months.

Karen M., 58
LithoLyte.com customer · Verified
18 months event-free
★★★★★

"It's the meal-timing that does it."

I tried other supplements before — wrong timing, no effect. Taking OxFree with the actual meal made the urine oxalate numbers drop on my next 24-hour collection.

Daniel K., 51
Amazon customer · Verified
2 collections clean
★★★★½

"Less guilt, less anxiety, fewer problems."

I used to inspect every menu. Now I take two with dinner and live my life. The mental load alone was worth it.

Marisol R., 46
LithoLyte.com customer · Verified
1 year on treatment
★★★★★

"My urologist now keeps a sample on her desk."

After my last hospital visit she started recommending it to other patients. I'm a believer. So is she.

James P., 64
LithoLyte.com customer · Verified
After ER visit
Dr. Samuel Reed, MD
A note from our founder

"Telling a stone-former to give up spinach and chocolate for life isn't a treatment plan — it's a punishment. OxFree is the answer I wish I could've handed every patient who asked 'so what can I eat?'"

Ryan Holland, MD
Board-Certified Urologist · Founder of LithoLyte Health
Questions

Honest answers about OxFree.

Still have a question? Our patient-care team, including our medical advisor — replies in one business day.

Contact support
Is OxFree the same as just taking a calcium supplement?
Not at all. OxFree's calcium is soluble, unlike Tums (calcium carbonate), which is basically chalk. The co-formulation (citrate/malate + B6) are all dialed for stone defense specifically. Taking the wrong calcium at the wrong time can actually raise your stone risk.
Can I take OxFree with CitraTabs?
Yes — they're designed to be taken together. CitraTabs raises urine citrate and pH. OxFree binds dietary oxalate before it ever gets there. Many patients take both, plus LithoLyte for hydration.
Do I still need to follow a low-oxalate diet?
That's a conversation with your doctor, but the answer for many people is no. OxFree is built so you don't have to memorize and avoid 40+ foods. The point is to bind the oxalate, not eliminate it.
When will I notice it is working?
OxFree works the moment it meets food in your stomach — but the meaningful signal is your next 24-hour urine collection. Most patients see urinary oxalate drop measurably within 4–6 weeks.
What is your return policy?
30 days, no questions asked. Send back any unopened bottles for a full refund. Subscriptions skip, pause, or cancel with one click..
Start today

Eat what you love, without the worry.

$29.99/month, shipped every 90 days. Skip, adjust, or cancel from your phone.