The Science Behind this Collagen Stimulating Peptide One of the most researched attributes of GHK-Cu is its influence on the extracellular matrix
[8] Stable Gastric Pentadecapeptide BPC 157 and Striated, Smooth, and Heart Muscle MDPI.
Nutr Res Rev, 2018
By simultaneously targeting all three receptors, retatrutide is hypothesised to deliver additive effects on appetite suppression, insulin secretion, and energy expenditure
Here is a side-by-side comparison based on available trial data: Semaglutide 2.4 mg (Wegovy): 14.9% average weight loss over 68 weeks, GLP-1 receptor agonist only Tirzepatide 15 mg (Zepbound/Mounjaro): 20.9% average weight loss over 72 weeks, dual GLP-1 and GIP agonist Retatrutide 12 mg: 24.2% average weight loss over 48 weeks, triple GLP-1, GIP, and glucagon agonist What I found interesting in the data is that retatrutide appears to produce faster early weight loss than either semaglutide or tirzepatide
1 This makes it difficult to perform activities that require skill and concentration, or where the safety of others is involved