Effect of L carnitine on quality of life in covert hepatic encephalopathy: a randomized, double blind, placebo controlled study L Carnitine: Benefits, Side Effects, FAQ, Sources, and Dosage Early research into L carnitine was often cited as underwhelming, showing negligible changes in muscle carnitine content and fat loss outcomes. However, these findings may have been limited by a short study window Buy L Carnitine 600mg for Research Peptide Source Studies L Carnitine & Muscle Soreness Relief Advanced Molecular Labs