L Carnitine Linus Pauling Institute Oregon State University Frontiers The effect of L carnitine supplementation on lipid profile in adults: an umbrella meta analysis on interventional meta analyses Effects of l Carnitine Supplementation in Patients Receiving Hemodialysis or Peritoneal Dialysis 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 PDF) The Role of L Carnitine in Kidney Disease and Related Metabolic Dysfunctions The adverse effects of long term l carnitine supplementation on liver and kidney function in rats L Liu, D M Zhang, M X Wang, C Y Fan, F Zhou, S J Wang, L D Kong, 2015