Xifaxan is a treatment for symptoms of SIBO. Every time I went off it, my symptoms returned. It’s not enough to take any pharmaceuticals or natural supplements without also changing your diet. My doctor has a dietitian that helped with kinds of foods to eliminate for a period of time to be reintroduced later one at a time until my gut healed.
There’s also a great book - SUPER GUT - you can order on Amazon that’s really helpful on foods that are gut healing, includes easy recipes. It’s worth checking out.