Acetyl L Carnitine (Metabolic Response Modifier) Is it safe to take Taurine and L Carnitine (L Carnitine) while breastfeeding? L Carnitine: Benefits, Side Effects, FAQ, Sources, and Dosage 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 Potential Adverse Effects of L Carnitine Marnys L Carnitine: Energy Production and Fat Metabolism