Micrograms (mcg) measure the single dose, for example 250 mcg per injection
Stomach issues are common with higher doses
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Eur J Nucl Med Mol Imaging
However, crucial factors include the reaction rate constants and the in vivo concentration of NAC ( 2 O 2 ) and superoxide, the reaction rates of NAC are lower than those of endogenous antioxidants, including GSH, GSH peroxidase, and superoxide dismutase ( In vivo studies have shown that intravenously administered NAC reaches high concentrations in organs such as the lungs (320 M), kidneys (250 M), heart (170 M), and liver (100 M), with peak concentrations in human red blood cells reaching 200 M