It acts like a protective protein found in human gastric juice and is valued for regenerating tissues and reducing inflammation
Most users experience mild or no side effects, though injection-site reactions, nausea, dizziness, and headache occur in a subset of patientstypically at rates below 10% in observational data

Injection burden 2-3 injections per day on TB-500 days Best for Dose flexibility, injury-focused work Cycle driver GHK-Cu cycling typically sets the cycle length BPC-157 Loading 250-500 mcg/day (weeks 1-4) Frequency Daily Maintenance 250 mcg/day (weeks 5-8+) Route SubQ near injury or oral TB-500 Loading 2.5-5 mg per injection (weeks 1-4) Frequency 2x/week Maintenance 2 mg per injection (weeks 5-8+) Route SubQ systemic GHK-Cu Loading 1-2 mg/day (weeks 1-4) Frequency Daily Maintenance 1 mg/day (weeks 5-8+) Route SubQ Weekly Schedule Example Monday BPC-157 500 mcg + TB-500 2.5 mg + GHK-Cu 1-2 mg Tuesday BPC-157 500 mcg + GHK-Cu 1-2 mg Wednesday BPC-157 500 mcg + GHK-Cu 1-2 mg Thursday BPC-157 500 mcg + TB-500 2.5 mg + GHK-Cu 1-2 mg Friday BPC-157 500 mcg + GHK-Cu 1-2 mg Saturday BPC-157 500 mcg + GHK-Cu 1-2 mg Sunday BPC-157 500 mcg + GHK-Cu 1-2 mg Use a separate syringe for each compound

In short: Semax leans toward activation BDNF, dopamine, focus, and stress tolerance while Selank leans toward calm, working through GABA to ease anxiety and, indirectly, to steady attention
It is naturally found in foods such as meat, fish, and dairy