When to Take L Carnitine for Weight Loss & Maximize Results A Pilot Clinical Trial on L Carnitine Supplementation in Combination with Motivation Training: Effects on Weight Management in Healthy Volunteers 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 Fat loss isn't luck it's strategy L Carnitine + discipline + consistency = results No excuses. Just execution. How it works L Carnitine helps transport fatty acids into the mitochondria