hi, this is the only forum i've found other than autism forums that focus on d-lactate levels and connection to CFS. My gut issues are primarily bloating in the small intestine after eating. It is really bad. it is always bloated with trapped gas in the Small itnestine 24/7 but after i eat it started to fill up all the way to my colon. it is very very uncomfortable and painful. I cant eat anything! I got a stool test, and tried a whole bunch of probiotics and i was always looking for the most potent kinds but i had mixed results. I am CONVINCED that there is some fermentation or bacterial interaction with my food going on in my small intestine (it's observable and tangible) so i went to get a SIBO test. SIBO was normal. I would have bet a million dollars on it so imagine my surprise. the GI did say that it does not mean something bacterial is going on and that the intestines and bacteria is very little understood. I don't do well on lactobacillus acidolphus at ALL. anything with lacto strains i get more bloated, acid reflux, heart burn etc. and i can only imagine there is too much lactic acid going on. So i looked up lactobacillus overgrowth and surely, you can have too much lacto acid and other d-lactate producing lacto bacteria overgrowth, and not enough NON D-LACTATE lacto (which is a dysbiosis among lacto species of its own). I am looking for a d-lactate free probiotic, does anyone know of any??? i did a search and fond that kefir might be it but it wasn't conclusive. Align was a good one which i will try but my problem is mainly in the small intestine so i need a few lacto strains that work to fight against the lacto overgrowth that i have. Last question! do ALL bifidobacteria help against d-lactate? i heard bifido ONLY produce l-lactate and not d-lactate and raise the pH levels of the colon which is why it's good. but im not sure if its all the bifido species or select ones. any help or input appreciated!