Comparison of short term and long term effects of peroral L carnitine intake: clinical implications of elevated TMAO levels in cardiovascular complications Did you know L carnitine, a vital amino acid, is naturally produced by your body and found in various foods? While acetyl L carnitine (ALCAR) can be a beneficial supplement for some, most people get Revisiting the Role of Carnitine in Heart Disease Through the Lens of the Gut Microbiota Potential Adverse Effects of L Carnitine Marnys