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 The effect of (L)carnitine on weight loss in adults: a systematic review and metaanalysis of randomized controlled trials Pooyandjoo 2016 Obesity Reviews Wiley Online Library Episode 129 L Carnitine and Fat Loss Effects of l carnitine supplementation on weight loss and body composition: A systematic review and meta analysis of 37 randomized controlled clinical trials with dose response analysis Clinical Nutrition ESPEN L Carnitine for weight loss is and heres why. There is zero published scientific data to support that L Carnitine actually helps you lose body fat. I went ahead and purchased the meta analysis