Amazon.com: Nutrex Research L Carnitine 3000 Clinically Dosed L Carnitine Liquid for Energy, Metabolism & Muscle Recovery Delicious Strawberry Watermelon No Sugar, No Carbs, No Stimulants 31 Servings : Health & Household 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 Nutrex Research L Carnitine 3000 465ml Protein House L Carnitine 600mg ml 10ml Cellpept Research