Frontiers A randomized clinical trial to evaluate the efficacy of L carnitine L tartrate to modulate the effects of SARS CoV 2 infection L carnitine supplements reduced lactate levels and heart rate; increased lipid metabolism, VO2max, oxygen consumption, and L carnitine plasma concentrations; improved performance BIO INNOVATIONS: Triple Carnitine, 333mg each type, 60 Capsules The Role of L Carnitine in Kidney Disease and Related Metabolic Dysfunctions What is the impact of L carnitine (Lecithin) on heart rate (HR) and heart rate variability (HRV)? Frontiers Association between fatigue, peripheral serotonin, and L carnitine in hypothyroidism and in chronic fatigue syndrome