l-carnitine tmao nature medicine 2013 koeth γ-Butyrobetaine Is a Proatherogenic Intermediate in Gut Microbial Metabolism of to Trimethylamine-N-Oxide (TMAO) as a Rising-Star
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doi: 10.1016/j.phrs.2022.106161 97 XiongX.ZhouJ.FuQ.XuX.WeiS.YangS.et al

Secondary endpoints and related outcome measures 1

L-Carnitine is not really an amino acid but is classified as one

Acetyl-L-carnitine (ALCAR) is a form that more easily crosses the blood-brain barrier and may offer additional antioxidant protection

doi: 10.1074/jbc.274.34.23740

It can increase the effects of insulin and certain oral hypoglycemic drugs, leading to low blood sugar levels
