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doi: 10.1126/science.1176009 26 Ewald CollinY

Starting too high Enthusiasm leads many users to begin at doses higher than recommended

That takes randomized, controlled clinical trials

Regulators have increasingly flagged this exact behavior unapproved peptide injections, DIY use, and clinic-based treatments operating in gray areas which is why peptides as a category are getting more scrutiny overall

Current Pharmaceutical Design , 2020 Injecting Far from the Injury Site (When Localized Healing Is Needed) If you're recovering from a joint, tendon, or ligament injury , injecting into the abdomen wont target the injured tissue as efficiently

Short answer GHK-Cu vs NAD+ head-to-head comparison