eating too much l carnitine L-Carnitine – Is it Worth Taking? Carnitine | Metabolon
Description
The SCFA-producing species, including Faecalibacterium prausnitzii , Bacteroides spp., and Clostridium spp., are well-known bacterial genera for synthesizing butyrate, which plays a vital role in maintaining intestinal barrier integrity and decreasing inflammation

Overall, while LC derivatives, notably ALC, show promise in lowering TMAO production and modifying gut microbiota composition, additional studies are needed to completely understand their effects

(PubMed) Natural Medicines

Healthy individuals, including strict vegetarians, generally synthesize enough L-carnitine to prevent deficiency
