High-dose L-Carnitine and Diaphragmatic Function Assessed by Ultrasonography in Patients With Respiratory Failure.

L-Carnitine supplementation has been shown to boost muscular performance in several studies. In hemodialysis patients with muscular weakness, fatigue, or cramps/aches, after L-carnitine treatment, about two-thirds of patients had at least some improvement in muscular symptoms . L-Carnitine was also found to improve the left ventricular ejection fraction (LVEF) in hemodialysis patients with cardiac morbidity who had significantly reduced LVEF in echocardiography before supplementation. Moreover, L-Carnitine has been shown to improve muscular function and exercise performance in athletes in several studies