Weight Loss Injections & Medical Programs Telemed & In Office Regenics L carnitine is a naturally occurring compound that helps your body convert fat into energy. It's often used as a supplement for fitness, weight loss, and overall health. #lcarnitine #fitnesslife #supplements #gymaddict #gymmotivation 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 Systemic regulation of L carnitine in nutritional metabolism in zebrafish, Danio rerio Scientific Reports