Current Pharmaceutical Design, 26 (25), 2971-2981.
The mechanism of GHK-Cu differs fundamentally from both Retatrutide and the healing peptides discussed previously
these bypass regulatory oversight and could be contaminated or contain things not listed on the label
Simultaneous start protocol (standard approach) When to use: Starting both peptides fresh (no prior use) Following clinical trial model exactly Want maximum proven efficacy Can tolerate both from beginning Week-by-week dosing schedule: Weeks 1-4: Semaglutide: 0.25mg weekly Cagrilintide: 0.6mg weekly Inject same day OR different days (preference) Separate injection sites if same day Tips: Start ginger supplementation, small meals, hydrate well Weeks 5-8: Semaglutide: 0.5mg weekly (2x increase) Cagrilintide: 1.2mg weekly (2x increase) Nausea typically increases this phase Tips: Anti-nausea meds ready, protein shakes if needed, slow eating Weeks 9-12: Semaglutide: 1.0mg weekly Cagrilintide: 1.8mg weekly Peak side effect window Tips: May need to extend by 1-2 weeks if struggling, Zofran helpful Weeks 13-16: Semaglutide: 1.7mg weekly Cagrilintide: 2.4mg weekly (cagrilintide at target) Semaglutide still escalating Tips: Cagrilintide side effects should be stabilizing Week 17+: Semaglutide: 2.4mg weekly (both at maximum) Cagrilintide: 2.4mg weekly Maintenance dosing Continue indefinitely Tips: Side effects typically moderate by now (adapted) Injection logistics: Both subcutaneous injections Can inject same day (different sites: left/right abdomen) OR split: Semaglutide Monday, Cagrilintide Thursday Rotate sites to prevent irritation 29-31 gauge insulin syringes See our peptide injections guide , how to reconstitute peptides , and peptide dosing guide
some users report reduced libido, others report improvement, and many of those changes are better explained by a range of other factors
