L Carnitine has become one of the most commonly asked about supplements over the past 18 months and I can see why when looking at all the research that has come out about it over the last 2ish years., Carnitine supplementation improves metabolic flexibility and skeletal muscle acetylcarnitine formation in volunteers with impaired glucose tolerance: A randomised controlled trial eBioMedicine Optimum Health L Carnitine or Acetyl L Carntine What's the difference? Nuroforge LC Dr.Kingly Pharmaceuticals L Carnitine Injection Clinica IDEAL Harwin