Is Xanthan gum Safe for Multiple Sclerosis (MS)?
For people with Multiple Sclerosis (MS), Xanthan gum is worth limiting or using with caution both during a flare and in remission. Xanthan gum is a thickener made by fermenting sugar with bacteria.
Status for MS
Why this rating?
Xanthan gum is a thickener made by fermenting sugar with bacteria. Some people with sensitive digestion report that it affects gut symptoms, though evidence is 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.
Editorial summary
This summary is editorial and is not part of the clinical review. Ratings above are unchanged.
What xanthan gum is
Xanthan gum is a thickener and stabilizer made by fermenting sugar with the bacterium Xanthomonas campestris and then purifying the result. FDA regulations allow it in food under set conditions, as a stabilizer, emulsifier, thickener, suspending agent, bodying agent or foam enhancer. It is widely used in sauces, dressings, dairy alternatives and gluten-free baking, where it replaces some of the structure that gluten would give.
What the safety reviews say
In its 2017 re-evaluation, the European Food Safety Authority concluded that a numerical acceptable daily intake was not needed for xanthan gum and found no safety concern for the general population at the estimated exposures. In a human study the panel reviewed, adults who consumed up to 214 milligrams per kilogram of body weight a day for ten days tolerated it well, although some people reported abdominal discomfort, which the panel described as undesirable but not adverse.
Why it is still rated with caution
That discomfort finding, together with reports from people with sensitive digestion, is the basis for our rating. It is a question of individual tolerance, not a safety alarm, and the evidence is limited. Because xanthan gum is often combined with other gums and emulsifiers, read the whole ingredient list before concluding that it is the cause of a symptom.
How Xanthan gum is rated across conditions
The same ingredient can mean different things depending on the condition. These are the ratings for every condition that has a guide for Xanthan gum.
| Condition | During a flare | In remission |
|---|---|---|
| Inflammatory Bowel Disease (IBD) | Avoid | Limit / Caution |
| Hashimoto's Thyroiditis | Limit / Caution | Limit / Caution |
| Graves' Disease | Limit / Caution | Limit / Caution |
| Rheumatoid Arthritis (RA) | Limit / Caution | Limit / Caution |
| Multiple Sclerosis (MS) | Limit / Caution | Limit / Caution |
| Lupus (SLE) | Limit / Caution | Limit / Caution |
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 Xanthan gum and every other ingredient checked against Multiple Sclerosis (MS) and any second condition you set. Learn about FoodSage.
