Impact of hemodialysis on endogenous plasma and muscle carnitine levels in patients with end stage renal disease Kidney International Most people talk about carnitine like it is one supplement. It is not. Acetyl L carnitine and L carnitine L tartrate do different jobs, and picking the wrong one for the wrong goal is where people Efficacy of L carnitine supplementation for improving lean body mass and physical function in patients on hemodialysis: a randomized controlled trial European Journal of Clinical Nutrition Role of carnitine in disease Nutrition & Metabolism Springer Nature Link L Carnitine Vitamin Supplement for Energy and Metabolism Boost