is l carnitine in food L-Carnitine L-Carnitine: Benefits, Uses, and Sources
Description
doi: 10.1158/2159-8290.CD-19-0672 [DOI] [PMC free article] [PubMed] [Google Scholar] 97

Fresh water should always be available
Absorption: Conditions like celiac disease, IBS, or pernicious anemia can affect how your body takes in B12

This is a biphasic (hormetic) dose-response common with copper peptides and many other biological compounds
