Heal ulcers
There is some anecdotal evidence that kombucha can help heal ulcers. One small study found that kombucha was effective in healing gastric ulcers in rats. However, there is no strong scientific evidence to support these claims.
If you are considering using kombucha to heal an ulcer, it is important to talk to your doctor first. While kombucha may have some health benefits, it can also cause side effects like stomach upset and nausea.
References
https://www.webmd.com/diet/kombucha-is-it-good-for-you
https://www.sciencedirect.com/science/article/pii/S1047279718307385
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8909623/
https://pubmed.ncbi.nlm.nih.gov/19420997/