Researchers interested in this direction can see more details on the efficacy of GLP-1R/GCGR agonists in the treatment of obesity in Sanchez-Garridos review (131)
The two common ones are compounded semaglutide and tirzepatide
Published evidence is narrower: topical skin and wound studies exist, hair claims are more indirect, and FDA materials caution that injectable GHK-Cu has limited human safety data [2], [3], [8]
Most clients feel great immediately after, but we recommend avoiding strenuous workouts for 12 hours post-injection if youre prone to soreness
13% decrease in subcutaneous fat mass 30% reduction of intra-abdominal fat mass 3-11% lean body mass increase 11-19% improvement in aerobic function Muscle strength increases between 7-19% After one year, participants saw overall body fat reduction, with the most significant results in the abdomen, with belly fat reduction at a notable 61%