Neurological manifestations of long COVID syndrome: a narrative review Maria Ioanna Stefanou, Lina Palaiodimou, Eleni Bakola, Nikolaos Smyrnis, Marianna Papadopoulou, George P. Paraskevas, Emmanouil Rizos, Eleni Boutati, Nikolaos Grigoriadis Exercise Intolerance and Response to Training in Patients With Postacute Sequelae of SARS CoV2 (Long COVID): A Scientific Statement From the American Heart Association Circulation Comparison of short term and long term effects of peroral L carnitine intake: clinical implications of elevated TMAO levels in cardiovascular complications Endothelial dysfunction is common in both Long COVID and ME CFS and has been linked to symptoms like fatigue, chest pain, and brain fog. Research suggests that certain supplementslike L arginine, CoQ10, curcumin, and