Minoxidil: For hair growth, GHK-Cu offers a milder, multi-action alternative, though minoxidil remains more clinically proven
Vitamin C influences cellular protection, immune activity, and tissue repair
Note: The review article states much LOWER quantities may be biologically active

Pre-Blend Reconstitution Math (12.5/2.5 mg, 15 mg total) Metric Blend composition Value 12.5 mg retatrutide + 2.5 mg cagrilintide Metric BAC water added Value 2.5 mL Metric Concentration Value 5.0 mg/mL retatrutide + 1.0 mg/mL cagrilintide Metric Ratio held constant Value 5:1 (reta : cag) What Each Draw Delivers (12.5/2.5 mg Pre-Blend) Draw Volume 0.20 mL Units 20 units Retatrutide 1.0 mg Cagrilintide 0.2 mg Draw Volume 0.40 mL Units 40 units Retatrutide 2.0 mg Cagrilintide 0.4 mg Draw Volume 0.60 mL Units 60 units Retatrutide 3.0 mg Cagrilintide 0.6 mg Draw Volume 0.80 mL Units 80 units Retatrutide 4.0 mg Cagrilintide 0.8 mg Draw Volume 1.20 mL Units 120 units* Retatrutide 6.0 mg Cagrilintide 1.2 mg Draw Volume 1.60 mL Units 160 units* Retatrutide 8.0 mg Cagrilintide 1.6 mg Draw Volume 2.40 mL Units 240 units* Retatrutide 12.0 mg Cagrilintide 2.4 mg * Volumes above 100 units exceed a standard 1 mL insulin syringe - split into two injections or use a larger syringe

Updated August 31, 2026 26% December 31, 2026 63% $2,120 Vol
Storage duration critically impacts effectiveness - reconstituted GHK-Cu lasts only 21-28 days refrigerated due to copper oxidation concerns (shorter than most peptides), requiring strategic reconstitution of amounts usable within this window rather than preparing entire vials at once