nac vs reduced glutathione L-Glutathione NAC: Differences, Similarities, and Uses 2 Pack NAC Supplement (N-Acetyl

Schwarzschild et al., 2008)

More scientific research still needs to be done though, so talk to your doctor before trying anything

Acta Biomed, 79 , 205-210

A larger randomized, placebo-controlled intervention trial (the SELECT study) in more than 35,000 middle-aged and selenium-replete men, randomized to receive selenium (in the form of selenomethionine, 200 g/day) and/or vitamin E supplementation, was halted because of concerns regarding an increased risk of type 2 diabetes mellitus with selenium and increased risk of prostate cancer with vitamin E (84, 85)

Researchers gave people with long COVID either a combination of liposomal vitamin C and arginine or a placebo for four weeks