glycine glutathione metabolism metabolism. In the presence of an amino acid glutathione is Metabolite of the month -

2015 Jan 29;13(1):118

While very rare, a life-threatening allergic reaction (anaphylaxis) has also been reported

Individuals with conditions such as chronic obstructive pulmonary disease (COPD), tuberculosis, neo-coronary disease, cardiovascular disease, gastro-oesophageal reflux disease, hepatitis C, Alzheimers disease, rheumatoid arthritis, age-related macular degeneration, nephropathy did not experience any adverse reactions following Quercetin application

Green tea is well tolerated, has low toxicity, and is readily incorporated into the daily diet, making it a practical candidate for long-term chemoprevention