Can L Glutathione Support Energy and Detoxification in Long COVID and ME CFS? RTHM Oxidative stress is a shared characteristic of ME CFS and Long COVID PNAS ME CFS (Myalgic Encephalomyelitis Chronic Fatigue Syndrome) is a complex condition that can occur after an infection (like the flu, mono, COVID 19, etc.). For some, there's no clear trigger, but regardless, the illness is Frontiers Myalgic Encephalomyelitis Chronic Fatigue Syndrome: the biology of a neglected disease