Oregano oil is a common choice for SIBO support thanks to its carvacrol...

https://www.unitedbookmarkings.win/managing-sibo-often-involves-oregano-oil-i-prefer-capsules-over-liquid-to

Oregano oil is a common choice for SIBO support thanks to its carvacrol content. I usually suggest capsules over liquid to avoid the intense aftertaste. Most people follow a 2 to 4 week cycle