Amazon.com: SIRENLABS L Carnitine Elite Burn Liquid Keto Fat Burner and Metabolism Activator Fat Loss Support Keto Friendly Weight Loss Increase Energy Stimulant Free Lemon Lime 3000mg (32 Servings) : Health & L Carnitine 5000 EC Sports Supplements More energy. Better performance. Faster recovery., This month, members at Vivid IV Health receive a FREE L Carnitine add on with their IV therapy., L Carnitine helps your body convert fat into fuel, L CARNITINE increases muscle mass, reduces fat mass. Bangkok Hospital Headquarter 2 Pack L Carnitine Passionfruit 3500 MG L Carnitine Liquid for Metabolism Energy Recovery Performance Fitness Supplement Muscle Dietary TikTok Shop If you are like a lot of people, you may have never heard of carnitine but this important nutrient is critical for our body's ability to optimally burn fat required for energy.