Oregano oil is a popular herbal tool for SIBO management, usually standardized...

https://highstylife.com/what-carvacrol-percentage-should-i-look-for-in-oregano-oil-capsules-for-sibo/

Oregano oil is a popular herbal tool for SIBO management, usually standardized for carvacrol. While liquid extracts are intense, I often suggest enteric-coated capsules to help bypass the stomach and reach the gut