The hidden risk of vitamin-C supplements.
When daily supplements
quietly raise stone risk
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.
Know what’s in it. Know what it means.
500mg
C is for caution
The daily dose that raises risk.
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.
01
Chapter One
The Daily Allowance
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 for vitamin-C
For women
75mg
For men
90mg
02
Chapter Two
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.
03
Chapter Three
Kidney-Smart Nutrition
CeroMulti® 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.
View Ingredients

