L Carnitine 3000 31 Servings By Nutrex Research Protonic Nutrition Support your fitness and endurance goals with Nutrex Research L Carnitine 1000. A powerful L Carnitine formula designed to support fat metabolism, endurance, energy production, and active lifestyles. 1000mg L Carnitine NUTREX Liquid Carnitine 3000 480 ml. Looking to level up your fat burning game? Nutrex Liquid Carnitine 3000 gives you a high dose of pure L Carnitine to transform stored fat into energy. No stimulants, no sugar, just clean