Participants in both groups were permitted to continue taking multi-vitamins, probiotics, and other medications/supplements as long as they were not those mentioned in the exclusion criteria (i.e., known to significantly raise glutathione levels)
They dont have to be precisely at the injury site, as TB-500 has systemic distribution
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Briefly, under visualization with an operating microscope, 50 L of the formulation was injected using a 25 G (Gauge) 1 inch needle through the tympanic membrane into the superior posterior quadrant
It can also be found in fish and meats , which contain the three amino acids that make up glutathione (glutamine, glycine, and cysteine)