I am not sure, Papajoe. I have to check on the meaning of the word "kefir" as I am not familiar with it. To me, garlic and yogurt don't really taste that good together but I don't think it is meant to. As I am sure many people know, garlic has numerous benefits and can work as a natural antibiotic. It is also used to treat yeast...so I think there definitely might be something to the garlic/yogurt combination if one can stomach it. My husband's parents (and most of their generation) grew up without access to medical care and had to rely on natural treatments of this type. A note of caution to Holly and others who may be reading: Some medications (including Xanax) interact with certain antifungals so it would be a good idea to check on any potential negatives if you decide to explore a possible yeast connection further.