Accumulation of 5 Oxoproline in Mouse Tissues After Inhibition of 5 Oxoprolinase and Administration of Amino Acids: Evidence for Acquired pyroglutamic acidaemia in a critically ill patient with chronic paracetamol use: A case report Lee Connolly, Ed Briggs, 2022 Glutathione 500mg 60 Capsules Figure 1 from Acetaminophen toxicity and 5 oxoproline (pyroglutamic acid): a tale of two cycles, one an ATP depleting futile cycle and the other a useful cycle. Semantic Scholar