It also depends on the frequency at which you get B12 shots
Sanz-Cuesta T, Gonzlez-Escobar P, Riesgo-Fuertes R, Garrido-Elustondo S, del Cura-Gonzlez I, Martn-Fernndez J, Escortell-Mayor E, Rodrguez-Salvans F, Garca-Solano M, Gonzlez-Gonzlez R, Martn-de la Sierra M
Regular monitoring of B12 levels is typically recommended for those receiving ongoing treatment
The plasma level of the natural peptide GHK (which forms GHKCu) averages about 200 ng/mL at age 20 and falls to around 80 ng/mL by age 60, tracking with reduced tissue repair and collagen support in older skin [7]
When to stop Stop the protocol and contact your provider if you experience persistent redness or swelling at injection sites beyond 72 hours, fever, or any systemic symptom that does not correlate with the expected mild post-injection reaction