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 Protocol For Life Balance L Carnitine 500 mg 60 Veg Capsules Vitacost L Carnitine, 500 mg Veggie Capsules Jarrow Formulas Comparison of short term and long term effects of peroral L carnitine intake: clinical implications of elevated TMAO levels in cardiovascular complications L Carnitine Jo Mar Labs