High dose vitamin C is generally synergistic with glutathione (vitamin C actually recycles oxidized glutathione back to its active form), but mega doses above 2,000 mg taken at the same moment as oral glutathione can compete for absorption in the gut
doi: 10.1038/s41467-024-55219-5 8

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Unfortunately, some of these compounded versions were improperly prepared, mislabeled, or lacked FDA approval, creating serious health risks for patients
The reaction was started by the addition of the enzymes needed to detect NEFA, VLDL (Athens Research & Technology, 12-16-221204), and Amplex UltraRed (ThermoFisher, A36006)