It’s probably not much to worry about, according to an article at MedPageToday. A snippet:
The latest study reviewed 13 controlled trials and found that in patients with an acute myocardial infarction, carnitine was associated with significantly reduced all-cause mortality, ventricular arrhythmias, anginal attacks, and infarct size compared with placebo or controls, according to James J. DiNicolantonio, PharmD, of Ithaca, N.Y., and colleagues.
A report from just a week ago implicated carnitine as a cause of atherosclerosis via TMAO produced by gut bacteria.