← brief for 2026-10-25 · Nutrition & lifestyle

Are oral and intravenous vitamin C implicated in oxalate-associated renal failure? Exploring the role of pre-existing renal dysfunction.

Key takeaways

This review looked at 45 reports of people who had kidney failure after taking vitamin C. It found that most of these people already had weak kidneys. This suggests that vitamin C can be risky for people with existing kidney issues. This is a review of case reports, so it shows a link, not proof of cause.

Who did this work

Carr AC · Gupta S

Source

Paper · PubMed, Climate, heat and the kidney · 2026 Sep 30
https://pubmed.ncbi.nlm.nih.gov/42925834/