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 Amazon.com: Muscle Pharm L Carnitine 3000, The Ultimate Liquid L Carnitine Supplement for High Performance, Supports Metabolism, Hydration & Energy, Zero Sugar, Low Calories, Peach Nectarine Flavor, 32 Servings : Everything Else Siren Labs 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) Walmart.com L Carnitine for Weight Loss I how to take & side effects L Carnitine Bodybuilding.com