A selective non-competitive inhibitor of VMAT2 VMAT1 is a different isoform expressed in peripheral neuroendocrine cells (adrenal chromaffin cells, interneurons of sympathetic ganglia, and enterochromaffin cells that store serotonin in the GI tract)

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Essential ME-3 addresses this challenge by providing a living probiotic strain that produces glutathione from within the body
Glutathione shows results after 2-3 months of consistent consumption