As a supplement, it may help with symptoms of flu, chronic bronchitis, and COPD symptoms, but evidence is weak for its purported ability to thin mucus during a cold and general claims of "immune support." Very preliminary studies suggest benefits for polycystic ovary syndrome (PCOS), Sjogrens syndrome, schizophrenia, compulsive behavior, as well as anti-aging applications (see What It Does)
These products are not intended to diagnose, treat, cure, or prevent any disease
At this stage, the research on quercetin is limited
Standard glutathione is often inexpensive because it is easy to manufacture, but if your body cannot absorb it, the cost-per-benefit is actually quite high