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Ive never supplemented with it and its in the 900s

Multiple internal standards shall be used to evaluate the efficiency of every analytical step, as well as a quality control sample spiked at the MRPL with all (available) reference compounds

Mice with TrxR1/Gsr-null livers exhibit full recovery from sterile acute oxidative stress induced by surgical hepatic ischemia/reperfusion injury [108], indicating that antioxidant defenses in TrxR1/Gsr-null cells are at least not so deficient as to be at a critical lethal-threshold

It appears to help fortify the body's natural defences against both external pathogens and internal stressors, which is part of why researchers in the longevity space pay such close attention to it

doi: 10.4103/jpbs.jpbs_207_24

ROS-induced endothelial dysfunction in the pathogenesis of atherosclerosis