l carnitine inj evolve 2000mg HCL Injection at ₹ 2500/box | L Carnitine IV Injection in Nagpur absorbing and delicious Liquid L Carnitine – Evolve
Description
JAMA 2003

For example, observational data from healthy adults indicate that the higher the MD adhesion rate, the more SCFAs in feces, and the lower the systemic inflammatory markers (175)

doi: 10.1111/j.1476-5381.2011.01480.x

So yes, there is real scientific interest here

L-carnitine is found in animal-based proteins like meat and fish, and we can take it as a supplement too
