A very common question, but currently unanswered
Extensive anaerobic subculturing of human feces identified no single commensal capable of l-carnitineTMA transformation, multiple community members that converted l-carnitine to BB, and only 1 Clostridiales bacterium, Emergencia timonensis , that converted BB to TMA
Poma A, Vecchiotti G, Colafarina S, Zarivi O, Aloisi M, Arrizza L, Chichiricco G, Di Carlo P
This makes it much more suitable than sterile water, which is free from living organisms but does not contain any preservatives like 0.9 percent benzyl alcohol that can limit microbial growth in the long run
Dave, what do you think
These drugs mimic a naturally occurring hormone in the body, making their mechanism of action both natural and well-tolerated