Weidenbacher PA, Sanyal M, Friedland N, Tang S, Arunachalam PS, Hu M, et al
Common side effects are typically mild and transient: Pain, redness, or swelling at the injection site (most frequent) Mild diarrhoea or gastrointestinal upset Headache or dizziness shortly after administration Itching or mild skin reactions Temporary pink/red discolouration of urine These effects usually resolve within 2448 hours without intervention
10.3390/biomedicines9101300 22 GojkovicS.KrezicI.VrdoljakB.MalekinusicD.BarisicI.PetrovicA.et al (2020)
Where you receive the injection matters
GHK-Cu declines 60% between ages 20 and 60: this is not a cosmetic add-on
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