glutathione in humans Oral administration of γ-glutamylcysteine increases intracellular levels above homeostasis a randomised human trial pilot study Glutathione | Antioxidant, Detoxification, Metabolism

WADA, for better or worse, does not require substantive evidence to include substances on its banned list

Not three versions of the same thing

Repetitive pronation (palm down position) and gripping with load or force through the wrist are risk factors for tissue degeneration

The safest approach is morning/evening separation - vitamin C in the AM, copper peptides in the PM

Do not let the needle rest on any other surface or come into contact with anything this can lead to contamination

Keep the sealed vial at controlled room temperature (20 to 25 C), away from direct light, and follow your laboratorys handling practices