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Cobalamin is naturally present in certain foods, such as poultry, meat, fish, and dairy products, as well as some fortified foods like breakfast cereals

GHK-Cu is photolabile as a copper(II) peptide complex, so keep both lyophilised vials and reconstituted solution protected from UV and fluorescent light, using amber or foil-wrapped vessels for aliquots

Studies show that around 85% of people are not getting enough B12

The antioxidant properties mean that GSH can play a protective role in cancer, but it's also thought that GSH might promote tumor growth and spread

It is used to treat Vitamin B12 deficiency and associated neurological and hematological conditions

You should routinely inspect for signs of degradation, such as discoloration or precipitation