cysteine based glutathione Life Extension, Glutathione, & C, Amino Acids for Immune Support, Dietary Supplement - 100 Capsules NAC N-Acetyl-L-Cysteine
Description
J., Kim D

El-Maghraby MM, Mahmoud AE

At pH 10

Impact on Net Weight: The TFA salt contributes to the total mass of the product

The study doesn't say what recommended B12 levels should be, just that its possible some people aren't getting enough, and that more research is needed in this area to figure out optimal levels
