Is Yeast extract Safe for Multiple Sclerosis (MS)?
For people with Multiple Sclerosis (MS), Yeast extract is worth limiting or using with caution both during a flare and in remission. Processed fungal cell extract yielding free glutamic acid; causes hyper-sensitivities.
Status for MS
Why this rating?
Processed fungal cell extract yielding free glutamic acid; causes hyper-sensitivities.
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.
How Yeast extract 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 Yeast extract.
| 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
Classification based on clinical nutrition assessment; no independent published study cited.
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 Yeast extract and every other ingredient checked against Multiple Sclerosis (MS) and any second condition you set. Learn about FoodSage.
