Role of carnitine in disease Nutrition & Metabolism Springer Nature Link L Carnitine Benefits, Uses, Dosage, Foods, Side Effects Dr. Axe How Much L Carnitine Per Day: Expert Guide The Science of Good Health Side Effects of L Carnitine TikTok L Carnitine Linus Pauling Institute Oregon State University 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