GHK-Cu is a naturally occurring peptide that declines with age
Glutathione helps eliminate free oxygen radicals that result from sun exposure, pollution, drugs, and other lifestyle factors
It is found throughout the body in blood, saliva, and urine, but its levels decline significantly with age
Not shown on the list because they are strictly oral are the collagen peptides which are widely marketed and not-FDA approved
When the body is exposed to environmental toxins, UV radiation, and other stressors, it can lead to an overproduction of free radicals, causing oxidative stress
Glutathione enhances the function of citrulline as part of the nitric oxide cycle