can glutathione bind with manganese in brain Toxicity of Glutathione-Binding Metals: A Review of Targets and Mechanisms Glutamine supplementation reverses manganese neurotoxicity
Description
F.FengJ

Int J Mol Sci 25 (2024)

& Chiang, S

So, the B12 in the serum is OK, but in the brain, it is low

Ensure endotoxin testing below 0.5 EU/mg
