Kuka J, Videja M, Makrecka-Kuka M, Liepins J, Grinberga S, Sevostjanovs E, Vilks K, Liepinsh E, Dambrova M. Metformin decreases bacterial trimethylamine production and trimethylamine N-oxide levels in db/db mice. Scientific Reports. 2020 Sep 03;10(1):14555. doi: 10.1038/s41598-020-71470-4.