Vitamin C Supplements and Kidney-Stone Risk: What the New Evidence Found

New research found that vitamin C supplements increased urinary oxalate. See what it may mean for you—or your patients.

For Patients

I’ve Had a Kidney Stone

Understand what the new research says about supplemental vitamin C and urinary oxalate—and what to consider when choosing a daily multivitamin.

Read My Guide

For Healthcare Professionals

I’m a Healthcare Professional

Review the meta-analysis methods, effect sizes, subgroup findings, limitations, and practical considerations for patient counseling.

Clinical Review

Kidney Kind,
By Design

  • The CeroMulti® 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.

  • 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.

  • The CeroMulti® 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.

  • The CeroMulti® 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.