Much of the current evidence is preclinical (cell and animal studies), and human data is still limited
Specifically, the study mentioned above found that it typically resolved in participants within four to five days
Glucagon-like peptide 1 as a regulator of food intake and body weight: therapeutic perspectives
doi: 10.1016/j.therap.2020.05.006 7 ChenC
For skin and hair goals, physician-prescribed compounded topical GHK-Cu from a licensed 503A compounding pharmacy is the best option, because it delivers therapeutic concentrations directly to the target tissue with physician oversight and pharmaceutical-grade quality assurance
Superior Glycemic and Liver Fat Improvements Clinical trials showed Retatrutide significantly outperformed both comparison drugs in improving HbA1c, fasting insulin, and liver fat levels , suggesting broader metabolic repair