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Given the limited research, its use as an oral or IV skin-lightening agent during pregnancy or lactation cannot be recommended

Beyond skin, researchers have also investigated GHK-Cu's effects on nerve outgrowth and neurotrophin production, bone tissue regeneration, hair follicle stimulation, and anti-inflammatory signaling

This practice enables comparative studies, enhances reproducibility, and speeds peer review

While cyanocobalamin has proved effective in preventing vitamin B12 deficiency, there is increasing evidence that the coenzyme B12 forms have a distinct advantage and better spectrum of action in many specialised applications