Can I eat kombucha with ulcerative colitis?
During a flare: Usually avoidIn remission: Caution
Kombucha is carbonated and fermented from tea, and lab testing has found it contains fructans, a FODMAP carbohydrate that a full serving may not suit for people who don't tolerate fructans well. As a fermented product it also contains a small amount of alcohol and some caffeine carried over from the tea base, on top of the gas from carbonation.
During a flare
The carbonation, fructan content, and trace alcohol make kombucha a commonly avoided drink during a flare.
In remission
In remission, a small serving (roughly 180 mL/about ¾ cup by FODMAP testing guidance) is more likely to be tolerated than a full bottle; go slowly and note your response.
Ways to make it gentler
- Stick to a small serving rather than a full bottle
- Let it settle to reduce fizz
Safer swaps
still fermented tea alternatives · water with a splash of juice
Sources
- Fermented drinks and the low FODMAP diet — Monash University FODMAP
- High and low FODMAP foods — Monash University FODMAP
Last checked 2026-08-12
