Evidence Limitations and Unanswered Questions The main evidence limitations for GHK-Cu are uneven human data, formulation differences, limited injectable safety information, small topical skin studies, indirect hair evidence, and uncertain long-term outcomes [2], [6], [7], [8]
Body weight dropped by an average of 24.2% at 48 weeks in the highest-dose group, versus 2.1% on placebo
A subsequent study by Reynolds et al
These can include gastrointestinal issues, skin rashes, or allergic reactions in rare cases
Generally, a researcher studying epithalon in the lab may need supplies and materials like: Bacteriostatic Water Insulin Syringes Alcohol Prep Pads Sterile Empty Glass Vials Large Needles + Syringes For researchers who do not have these supplies available and wish to study epithalon, it is recommended to check authorized vendors