Oregano oil is a common choice for SIBO, but look for a high carvacrol...

https://www.web-bookmarks.win/many-prefer-oregano-oil-capsules-over-liquid-to-avoid-the-intense-burn-look

Oregano oil is a common choice for SIBO, but look for a high carvacrol percentage. Capsules are easier to take than liquid, which can burn your throat. Most people gauge results after a 2 to 4 week cycle. Prioritize quality for your gut.