The product is intended for scientific research, laboratory analysis and reference applications, and is not intended for consumption by humans or animals
Specific proteins in this supplement such as lactoferrin, serum albumin, alpha-lactalbumin, and immunoglobulins, are rich in cysteine and cystine residues, which are bioavailable for cellular absorption and subsequent glutathione synthesis
Additionally, one study of over 400 human subjects found different regression profiles for selenium and GPx-1 activity for each genotype: the correlation of GPx-1 activity with plasma selenium concentrations was higher for the Pro/Pro genotype than the Leu/Leu genotype, providing evidence that GPx-1 genotypes can modulate the expression of GPx-1 in response to selenium in vivo (183)
Intravenous delivery results in immediate full-concentration exposure and typically the shortest apparent half-life because peak plasma levels degrade the fastest
Not FDA-approved as veterinary use: There are no official canine dosing, product quality, and monitoring standards that are approved by the FDA
Choosing between them should not be arbitrary