Species and muscle differences in L carnitine levels in skeletal muscles based on a new simple assay ScienceDirect Frontiers Age and APOE affect L carnitine system metabolites in the brain in the APOE TR model Palmitoyl L carnitine chloride Machine learning guided discovery of SLC25A45 as a mediator of mitochondrial methylated amino acid import and carnitine synthesis: Cell Metabolism L CARNITINE In a meta analysis of 21 RCTs, L carnitine supplementation improved several outcomes related to cardiometabolic health in people with type 2 diabetes. However, the certainty of the evidence and the clinical importance of