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There are no other absolute contraindications reported for hydroxocobalamin use in deficiency states, but caution is advised in individuals with conditions such as early Lebers optic neuropathy (a rare hereditary optic atrophy) due to the theoretical risk of worsening vision

Ans: Cyanocobalamin is sensitive to light and breaks down when exposed to it, which reduces the amount of active vitamin left in the solution

GHK-Cu, or glycyl-L-histidyl-L-lysine copper complex, is a naturally occurring copper peptide studied for collagen-related pathways, tissue remodeling, antioxidant defense, and skin repair [7] [8]