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[9] [14] Neurological symptoms associated with B12 deficiencysuch as paraesthesia, ataxia, or cognitive impairmentrequire urgent treatment with more frequent injections (1mg on alternate days initially) to prevent irreversible nerve damage

GHK-Cu stands out because it works on many repair pathways at once, not just a single skin target

Some experts recommend taking B12 supplements on their own because they can bind with or interact with other ingredients, so its a good idea to chat with a healthcare pro before making this call