Rooted in Blue Zone Philosophy

In the Zone

C-ERO was developed in Loma Linda, California—the only certified Blue Zone in the United States. Blue Zones are regions in the world where people live longer, healthier lives, often reaching 100 years or more. Inspired by this unique environment, our team embraces the same principles that define Blue Zone living: eating whole, unprocessed foods, staying active, and prioritizing meaningful connection and community.

With this philosophy at heart, we created C-ERO—the first in a thoughtfully developed family of nutritional supplements. At Prevastone, we believe whole foods should always come first. That’s why our supplements are carefully designed to support your healthy choices, not replace them—empowering you to live well, naturally.

Built for Prevention
Backed by Purpose.

The Supplement Born in a Blue Zone

“As a physician raised in the only Blue Zone in the U.S., I've seen firsthand how lifestyle and nutrition contribute to long healthy lives. But as a kidney stone specialist living there, I've noticed a surprising trend; many health-conscious patients were developing kidney stones, often while taking daily multivitamins.

Research revealed the problem; ingredients contained in the vitamin, specifically vitamin C, convert to oxalate and raise stone risk. Yet no multivitamin existed without it.

That's why I created C-ERO, a complete multivitamin designed to support health while avoiding ingredients known to increase your risk of forming kidney stones.”

—D. Duane Baldwin, M.D.

Kidney Kind,
By Design

  • Our formula is made 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.

  • 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.

  • 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.

  • 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.