A short excerpt from a YouTube video (creator: Joy Kong, MD) discussing whether oral methylene blue acts like an antibiotic in the gut. The speaker reports anecdotal observations that, at the low dosages used, they have not seen antibiotic-like gastrointestinal side effects (no diarrhea or GI upset) and claim not to have received complaints about microbiome disruption.
Some people even ask you and ask us, does it. Well, for taking it through the gut, does it kill all the microbiome we found with the dosages? You know, we're not seeing the diarrhea, we're not seeing the problems with antibiotics that are killing it. So the way that it's naturally doing it, we're not seeing all the side effects of people taking too many antibiotics. And so we've not had one complaint about GI upset or getting diarrhea or having any GI tract. So again, we're using the minimum amount of methylene blue, so we're not going to overwhelm that digestive tract, but we sure have not seen any problems with it affecting the microbiome.
