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

https://www.4shared.com/office/gu7C2Q5cge/pdf-78857-27675.html

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.