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Peptide Encyclopedia
Browse every compound by category. Each entry separates what's established from what's anecdotal, and links to primary literature where it exists.
GLP-1 & Metabolic
Pillar →5-Amino-1MQ
A small-molecule NNMT inhibitor studied in early metabolic research; technically not a peptide, but commonly grouped with metabolic compounds in the community.
AOD-9604
A synthetic fragment of human growth hormone (the 176-191 region) marketed for fat loss, but with disappointing human weight-loss evidence.
Cagrilintide
An investigational long-acting amylin analog studied for weight management, frequently in combination with semaglutide (the CagriSema combination).
Liraglutide
An FDA-approved GLP-1 receptor agonist — the daily-injection predecessor to weekly agents like semaglutide — with established human trial data.
Mazdutide
An investigational dual GLP-1 and glucagon receptor agonist studied for weight management and metabolic outcomes, with a notable trial program in China.
Retatrutide
An investigational triple agonist targeting the GLP-1, GIP and glucagon receptors, notable for unusually large weight reduction in early human trials.
Semaglutide
A GLP-1 receptor agonist with a strong human trial record and multiple FDA approvals for type 2 diabetes and chronic weight management.
Survodutide
An investigational dual GLP-1 and glucagon receptor agonist studied for obesity and metabolic liver disease (MASH/NASH).
Tesofensine
A small-molecule triple monoamine reuptake inhibitor (not a peptide) originally developed for neurological disease and later studied for obesity.
Tirzepatide
A dual GIP and GLP-1 receptor agonist with FDA approvals for type 2 diabetes and chronic weight management, supported by large randomized trials.
Recovery & Healing
Pillar →BPC-157
A synthetic 15–amino-acid peptide derived from a protein found in gastric juice, studied predominantly in animal models for soft-tissue and gastrointestinal healing.
TB-500
A synthetic peptide based on an active region of thymosin beta-4, a naturally occurring protein involved in cell migration and tissue repair.
Growth Hormone Secretagogues
Pillar →CJC-1295
A synthetic analog of growth hormone-releasing hormone (GHRH) designed for a longer duration of action, studied for stimulating the body's own GH release.
Ipamorelin
A selective ghrelin-receptor agonist studied as a growth hormone secretagogue — it prompts the pituitary to release the body's own growth hormone.
MK-677
An orally active ghrelin-receptor agonist (growth hormone secretagogue) that raises GH and IGF-1; a small molecule rather than a peptide, with some human study data.
Sermorelin
A GHRH analog (the 1-29 fragment) with a history of approved diagnostic/clinical use, now commonly compounded as a growth hormone secretagogue.
Cognitive & Nootropic
Pillar →Longevity & Anti-Aging
Pillar →Skin, Hair & Aesthetic
Pillar →GHK-Cu
A naturally occurring copper-binding tripeptide (Gly-His-Lys) with genuine topical cosmeceutical research and a wider base of anecdotal use for skin and hair.
Melanotan II
A melanocortin receptor agonist used unofficially for tanning and libido effects, with meaningful safety concerns and no approval for these uses.
PT-141
A melanocortin receptor agonist that acts on the nervous system rather than the vascular system; one formulation (bremelanotide / Vyleesi) is FDA-approved for a specific indication.