l-carnitine with tea polyphenols review | Linus Pauling Institute Frontiers | L-Theanine: A Unique
Description
Oncotarget 7 , 38323846 (2016)

doi: 10.1038/onc.2017.216

The obtained results revealed that inhibition of AMPK expression led to a decrease in the level of CPT1 and that l-carnitine could increase the level of CPT1

It is involved in synthesizing neurotransmitters, chemicals that transmit signals in the brain[223]
