To be fully transparent, one thing that shows up in independent ingredient reviews is the small amount of ethanol in the formula, which is flagged for caution on its own, though here it's used in a tiny quantity as a natural preservative and carrier, not as a primary ingredient
10.1155/2015/372432 Mediators Inflam
Professional Formulas L-Glutathione is for the temporary relief of fatigue, minor muscle or joint pain, stiffness, or inflammation, diminished memory, confusion, or difficulty losing weight.*
Glutathione injections can cause severe side effects like breathing difficulties, fluctuations in blood pressure, or even drug reactions during process, which only a qualified doctor can manage