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Description
Because of the body's ability to make glutathione, it is not considered an "essential" nutrient but under some conditions, we need more glutathione than the body can produce
A 45-year-old at 320 ng/dL is technically "normal," but he's at the bottom of the range

Yang H, Yang T, Heng C, Zhou Y, Jiang Z, Qian X, et al

Reconstituted glutathione must be stored in a refrigerator at a temperature between 2C and 8C (36F and 46F)
Factors such as your metabolism, overall health, and individual response to B12 can influence the timeline for experiencing improvements

To be used by trained professionals only
