Retatrutide is an investigational peptide developed by Eli Lilly. Unlike older weight-loss drugs that target one or two pathways, Retatrutide activates three receptors simultaneously: 1. GLP-1 receptor → reduces appetite and slows stomach emptying. 2. GIP receptor → improves insulin response and metabolic regulation. 3. Glucagon receptor → increases energy expenditure and fat burning. This “triple agonist” approach is why many people refer to it as attacking weight gain from three different strategies. Clinical trials have reported average weight loss approaching 25–30% of body weight in some participants, among the strongest results seen with obesity medications.
In peptide and biohacking circles, a “Glow Stack” usually refers to a combination of peptides aimed at improving skin quality, recovery, inflammation, and healthy aging. There is no single official formula, but the most common version contains: 1. GHK-Cu (Copper Peptide) – associated with collagen production, skin repair, wound healing, and hair/skin appearance. 2. BPC-157 – commonly discussed for tissue repair and recovery, though human clinical evidence remains limited. 3. TB-500 (Thymosin Beta-4 derivative) – often included for recovery, mobility, and tissue-healing support.