Is Titanium dioxide Safe for Rheumatoid Arthritis (RA)?
For people with Rheumatoid Arthritis (RA), Titanium dioxide is worth limiting or using with caution both during a flare and in remission. Titanium dioxide (E171) is a white food-colour additive.
Status for RA
Why this rating?
Titanium dioxide (E171) is a white food-colour additive. Research has raised concerns about possible effects on the intestinal lining, but evidence in people with autoimmune conditions remains limited.
People who are sensitive to this ingredient may notice gi. Individual responses vary, so this symptom category does not replace the condition-specific rating above.
Related ingredients
Same ingredient family or way of affecting the body.
Other conditions
Sources
Published sources
- Sarris, J., & Wardle, J. (Eds.). (2010). Clinical Naturopathy: An Evidence-Based Guide to Practice (1st ed.). Elsevier. ISBN 9780729539265. — literature
Clinical review
Reviewed by Morvarid Nikousokhantayar, MSc Nutrition, Certified Naturopath & Nutritionist — last reviewed September 25, 2026.
This is general dietary information, not medical advice. Talk to your care team about your individual triggers.
Want to check a full product against your conditions?
Scan a barcode with FoodSage to see Titanium dioxide and every other ingredient checked against Rheumatoid Arthritis (RA) and any second condition you set. Learn about FoodSage.