cero
The Hidden Risk of Vitamin-C Supplements
C for Caution
Taking high doses of vitamin-C supplements, 500 mg or more a day on a regular basis, has been shown to increase the risk of developing kidney stones in some people. More so if you have had kidney stones in the past or have family members who have had them. If you are at risk for developing kidney stones you should not take more than the recommended daily allowance of vitamin-C. The recommended daily allowance of vitamin-C for women is 75 mg and 90 mg for men.
Research shows that regularly taking high doses of vitamin-C—500 mg or more per day—can increase the risk of kidney stone formation. This risk is even higher if you’ve had kidney stones in the past or have a family history of them.
The recommended daily allowance for vitamin-C is :
75mg
for Women
90mg
for Men
Nature’s Secret
Vitamin-C is in more foods than you think.
A single serving of these can meet your daily Vitamin-C needs:
Broccoli
Cauliflower
Mangoes
Oranges
Strawberries
Kale
If you’re also taking a multivitamin or supplement with added vitamin C, you could be getting more than you need—possibly increasing your risk of forming kidney stones.
That’s why we
created cero
CERO is a physician formulated zero–vitamin-C multivitamin, specially designed for people who are prone to experiencing kidney stones. CERO provides daily essential vitamins without the added risk of excess vitamin-C.
Just 1 capsule a day, paired with a healthy diet and proper hydration, can help you stay nutritionally balanced—without feeding kidney stone formation.
Smart nutrition for kidney stone formers.
Kidney Kind,
By Design
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Our formula is made entirely from plant-based ingredients, chosen for their natural effectiveness and gentleness on the kidneys. No animal products, no synthetics—just clean, botanical support your body can trust.
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We believe wellness starts with nature. That’s why our ingredients follow a whole foods philosophy—organic, minimally processed, and derived from plants. Each one is selected to support your body gently and effectively, just as nature intended.
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Our formula is completely gluten-free, making it safe and gentle for those with sensitivities or celiac concerns. We’re committed to clean, simple ingredients that support your health—without anything that doesn’t belong.
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C-ERO was created by a board-certified, kidney stone specialist who saw firsthand the need for a clean, effective multivitamin tailored to people prone to kidney stones. With deep clinical insight and a patient-first approach, every ingredient was carefully chosen to support kidney health without increasing stone risk.
