Serious adverse effects are uncommon but possible, including allergic reactions, severe injection site reactions if improper technique is used, and excessive detoxification responses in susceptible individuals
The key is choosing the right clinic, right protocol, and expert guidance
10.1016/j.physbeh.2018.12.002 95 FeterN.SchaunG
I hope this helps, and all the best to you and your hubby

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Experimental GHK-Cu protocols often involve several weeks of consistent use rather than expecting immediate results