Liquid L Carnitine 3000 Nutrex Amino Acids Amazon.com: Nutrex Research L Carnitine 3000 Clinically Dosed L Carnitine Liquid for Energy, Metabolism & Muscle Recovery Delicious Sour Gummy Worms Flavour No Sugar, No Carbs, No Stimulants 31 L Carnitine 600mg ml 10ml Cellpept Research Nutrex Research L Carnitine 3000 465ml Protein House 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