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Symptoms of actual copper toxicity (nausea, vomiting, abdominal pain, liver damage) require far higher exposures than any GHK-Cu protocol provides
Why they work together: Argireline reduces expression lines (Botox-like effect) Retinol addresses overall skin texture and collagen Different mechanisms = complementary results Application strategy: Morning: Argireline serum (targets expression lines during day) Evening: Retinol Don't mix in same application (pH differences may reduce effectiveness) Syn-Coll (Palmitoyl Tripeptide-5) Compatibility: Excellent
doi: 10.7888/juoeh.10.427 51 MoriKKaidoM
Bae KY, Kim SW, Shin HY, et al
The Phase 2 BI 456906 obesity trial reported GI events in roughly 75% of participants on the highest dose, with discontinuation rates in the high single digits survodutide users should expect a tolerability profile broadly similar to semaglutide and tirzepatide
