Animal experiments have revealed that the adrenal glands contain the highest concentration of L-carnitine, followed by the heart, bone, muscle, adipose tissue, and liver
Additionally, proponents argue that even sub-therapeutic doses might provide modest improvements in appetite regulation and weight management outcomes that could benefit Hashimoto's patients struggling with metabolic complications
This review of ginseng during pregnancy is from 2008 and states that it is safe to ingest but to use with caution given some data in animals, but not much has come out since then
"The rare things, the thyroid tumors, cancers, we have not seen though," he said
10.1016/j.saa.2010.10.012 [DOI] [PubMed] [Google Scholar] Stoll A., Seebeck E
Nicotinamide deoxyriboside derivatives, such as nicotinamide 2-deoxyriboside and 5-methylnicotinamide 2-deoxyriboside, act as mechanism-based small molecule inhibitors of CD38 by forming stable covalent intermediates 132