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What it is. Retatrutide is a long-acting peptide that activates three metabolic receptors at the same time: GLP-1, GIP and glucagon. This triple action is designed to influence appetite, blood-sugar control, fat metabolism and total energy balance through complementary pathways.

What it does. GLP-1 signalling increases fullness, reduces hunger and slows the movement of food through the stomach. GIP supports insulin release after eating and helps the body manage glucose and nutrients. Glucagon signalling acts mainly through the liver and is linked with fat oxidation and energy expenditure. Together, these signals can reduce food intake while improving several markers of metabolic health.

Why people use it. Retatrutide is primarily sought for strong appetite control, reduced food cravings, sustained weight reduction and improvements in waist measurement and glucose regulation. Its appeal comes from combining the appetite effects associated with incretin peptides with the additional metabolic action of the glucagon receptor.

What it is. Glow combines three complementary repair peptides: GHK-Cu, BPC-157 and TB-500. The blend is built around skin quality, collagen support, connective-tissue repair and the cellular processes involved in recovery.

What it does. GHK-Cu delivers copper into tissue-remodelling pathways and supports collagen, elastin and glycosaminoglycan production. BPC-157 influences blood-vessel formation, fibroblast activity, nitric-oxide signalling and the repair response in muscle, tendon, ligament and gastrointestinal tissue. TB-500 interacts with actin, a structural protein that controls cell shape and movement, helping repair cells migrate towards damaged tissue.

Why people use it. Glow is used when the priority is skin texture, firmness and elasticity alongside broader recovery support. It is commonly chosen for healthier-looking skin, hair and connective tissue, as well as recovery from demanding training, soft-tissue strain or periods of physical stress.

What it is. KLOW combines GHK-Cu, BPC-157 and TB-500 with KPV, a short anti-inflammatory tripeptide derived from alpha-MSH. It extends the skin and tissue-repair profile of Glow by adding targeted support for inflammatory signalling and barrier health.

What it does. GHK-Cu supports collagen, elastin and extracellular-matrix renewal. BPC-157 promotes repair signalling, angiogenesis and fibroblast activity, while TB-500 supports cell migration and tissue remodelling through the actin system. KPV acts on inflammatory pathways including NF-kB and MAP kinase, helping reduce the production of pro-inflammatory cytokines in skin, immune and intestinal cells.

Why people use it. KLOW is selected for a wider recovery and longevity focus: skin quality, connective-tissue repair, inflammation management and gut-barrier support. It is particularly popular when someone wants the regenerative profile of Glow with the additional KPV component for inflammatory balance.

What it is. GHK-Cu is a naturally occurring three-amino-acid peptide bound to copper. Levels are highest when we are young and decline with age. The peptide acts as both a copper carrier and a biological signal involved in tissue renewal and repair.

What it does. GHK-Cu stimulates fibroblasts and supports the production of collagen, elastin and glycosaminoglycans, the structural materials that give skin and connective tissue their strength and flexibility. It also influences antioxidant defence, inflammatory signalling, blood-vessel formation and the activity of enzymes that remove damaged matrix so healthier tissue can be rebuilt.

Why people use it. GHK-Cu is most commonly used for skin firmness, elasticity, texture and recovery, as well as hair and scalp support. It is also chosen for wound-response and connective-tissue programmes because of its broad role in extracellular-matrix remodelling.

What it is. MOTS-C is a 16-amino-acid peptide produced from mitochondrial DNA. It acts as a messenger between the mitochondria, the cell and the nucleus, helping the body respond when energy demand rises or cells are placed under metabolic stress.

What it does. MOTS-C activates AMPK, one of the body's main cellular energy sensors. This can increase glucose uptake into skeletal muscle, improve metabolic flexibility and support the use of stored fuel for energy. It also influences mitochondrial biogenesis, stress-response genes, fat metabolism and the adaptations associated with exercise.

Why people use it. MOTS-C is used for energy, exercise capacity, metabolic health and recovery. It is especially relevant to people interested in mitochondrial performance, glucose handling, endurance, body composition and maintaining physical function as they age.

What it is. NAD+ is an essential coenzyme found in every living cell. It is not a peptide. It continually cycles between NAD+ and NADH to move electrons through the reactions that convert food into usable cellular energy.

What it does. NAD+ is central to ATP production inside the mitochondria. It is also consumed by sirtuins, PARP enzymes and other systems involved in DNA repair, gene regulation, cellular stress responses, inflammation and the removal of damaged mitochondria. NAD+ availability therefore connects energy production with the wider maintenance and repair of the cell.

Why people use it. NAD+ is used to support energy, mental clarity, recovery and healthy-ageing programmes. Interest is particularly strong during periods of fatigue, high physical or cognitive demand and later life, when cellular NAD+ availability can become less efficient.

What it is. This repair blend combines BPC-157, a 15-amino-acid peptide derived from a protective gastric protein, with TB-500, a synthetic fragment related to the naturally occurring repair peptide thymosin beta-4.

What it does. BPC-157 influences VEGF, nitric-oxide and growth-factor pathways involved in blood-vessel formation, fibroblast activity, collagen organisation and tissue repair. It is particularly associated with tendons, ligaments, muscle, the gut lining and other tissues with limited blood supply. TB-500 binds to actin and supports cell movement, new blood-vessel formation and tissue remodelling. Pairing them targets both the signalling and movement of cells involved in repair.

Why people use it. BPC-157 and TB-500 are commonly paired for injury recovery, tendon and ligament support, muscle repair, mobility and persistent soft-tissue problems. Athletes and active people often choose the combination when training load, overuse or a slow-healing area is limiting recovery.

What it is. Somatropin is recombinant human growth hormone. Its 191-amino-acid sequence is identical to the growth hormone produced by the pituitary gland. It acts directly through growth-hormone receptors and indirectly by increasing insulin-like growth factor 1, known as IGF-1.

What it does. Growth hormone affects the metabolism of protein, fat and carbohydrate. It increases nitrogen retention and protein synthesis, supports skeletal-muscle growth, stimulates the release of stored fat and helps maintain bone and connective tissue. Through IGF-1, it also influences cell growth, repair and regeneration throughout the body.

Why people use it. Somatropin is used clinically to replace inadequate growth hormone in adults and children with diagnosed deficiency. It is also sought in performance, recovery and longevity settings for lean-tissue support, body composition, exercise recovery, connective-tissue maintenance and general vitality.