I think garlic has antifungal properties,not antibiotic.The intestinal flora is bacterial so i think it is ok.I am not sure if garlic also kills bacteria or not though,so dont take my word on it.I dont use garlic because it is high in sulpher and have read articles about causing brain function problems.I tink sulpher is bad for healing leaky gut also.Im sorry i cant remember all the stuff i read but i think i am somewhat accurate.