I see what you are saying but all those stuff you've mentioned makes my breath rancid esp.
Multivitamins which contain B complex, Riboflavin etc
Probiotics
I've spent a lot of money on probiotics even importing the best Natren probiotics from Holland. They all did nothing. They may help for Body Odor but not for my breath.
I'm sticking with Glutamine for the timebeing with little dosage of permatrol. Lets see.