Alpha Lipoic Acid in Pediatrics on Hemodialysis

The goal of this clinical trial is to test alpha lipoic acid in children undergoing hemodialysis. The main questions it aims to answer are: * Will the use of alpha lipoic acid lower cardiovascular events in that population? * Is the incidence of those cardiovascular events linked to the oxidative stress and endothelial dysfunction in that population? * Will the drug cause side effects? Participants will: * take either one dose daily of 600mg tablet Alpha lipoic acid orally or a look-alike tablet containing no drug. * be monitored for the occurrence of cardiovascular events (stroke, angina, etc.) * be monitored for the occurrence of side effects * give blood samples for testing serum levels of E-selectin biomarker and superoxide dismutase enzyme * undergo clinical examinations (Echocardiogram, Duplex ultrasonography, Intima-Media-Thickness) Researchers will compare between the group taking alpha lipoic acid and the group taking the look-alike tablet.