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1 2 "Glutathione synthesis"

Now heres the funny bit The MHRA in responding to our petition stated: Vitamin B12 could not legally be classified as a medicine that can be made available for sale without prescription in pharmacies because it is an injection and because the condition it is licensed to treat, pernicious anaemia, needs a clinician to diagnose it, and monitor its treatment (see point IV above)

But here's the kicker: not all GHK-Cu is created equal, and understanding the core differences is critical for any serious researcher in 2026

Despite the short plasma half-life, downstream biological effects in tissue persist substantially longer, consistent with a signaling cascade rather than direct dose-response activity