Incretin and metabolic peptides studied for glycemic control and fat loss.
Metabolic peptides are among the most clinically validated classes in modern medicine. The incretin axis — GLP-1, GIP, and glucagon receptor signaling — coordinates insulin secretion, satiety, gastric emptying, and energy expenditure, and engineered agonists of these receptors now anchor the treatment of type 2 diabetes and obesity.
Research in this area spans single-, dual-, and triple-receptor agonists, amylin analogs, and adipose-selective fragments. Endpoints commonly studied include glycemic control, body-weight reduction, MASH/hepatic-fat resolution, and cardiovascular risk — with half-life extension (fatty-acid acylation, DPP-4 resistance) a recurring engineering theme.
The once-weekly GLP-1 receptor agonist behind Ozempic, Wegovy, and Rybelsus — FDA-approved for type 2 diabetes, chronic weight management, cardiovascular risk reduction, and MASH.
View profileThe once-daily GLP-1 agonist that preceded semaglutide — FDA-approved for diabetes (Victoza) and obesity (Saxenda).
View profileDual GIP / GLP-1 receptor agonist with industry-leading weight-loss endpoints.
View profileInvestigational once-weekly triple agonist (GIP / GLP-1 / glucagon) — the molecule some in the research community nickname "GLP-3" — with the largest weight reductions reported for any incretin-class agent.
View profileInvestigational glucagon / GLP-1 dual agonist from Boehringer Ingelheim — Phase 3 for obesity and MASH.
View profileA glucagon / GLP-1 dual agonist (oxyntomodulin-based) approved in China for weight management and diabetes — not yet FDA-approved.
View profileLong-acting amylin analog — Novo Nordisk’s answer to GLP-1 from a second satiety pathway, studied alone and as half of CagriSema. Phase 3 monotherapy reported ~11.8% mean weight loss.
View profileNovo Nordisk’s fixed once-weekly combination of cagrilintide (amylin) + semaglutide (GLP-1) — 20.4%–22.7% mean weight loss in Phase 3, filed with the FDA in December 2025.
View profileThe archetypal protein biologic — a 51-amino-acid two-chain hormone, disulfide-linked, and the first recombinant DNA drug ever marketed.
View profileInsulin’s counter-hormone — a 29-amino-acid peptide that raises blood glucose, the emergency rescue for severe lows, and the "G" in the new triple agonists.
View profileGHRH analog FDA-approved for HIV-associated lipodystrophy.
View profileAn anti-myostatin antibody (Regeneron) now studied in obesity combinations to cut lean-mass loss and deepen fat loss alongside semaglutide.
View profileA "sweeping" anti-myostatin antibody (Roche/Chugai) that not only blocks but actively clears myostatin — a cautionary case after its rare-disease trials failed.
View profileAn anti-activin-A antibody (Regeneron) — the first drug on the whole activin/myostatin axis to reach FDA approval (as Pasatru, for the rare bone disease FOP), and the activin-A leg of obesity muscle-preservation combinations.
View profileAn antibody that blocks the activin type II receptor itself — shutting off myostatin AND activin signaling at once; famous for adding muscle while cutting fat.
View profileMitochondrially-encoded peptide with reported insulin-sensitizing activity.
View profileA 24-amino-acid mitochondrial-derived peptide with cytoprotective, anti-apoptotic activity — a companion to MOTS-c on the mitochondrial-signaling frontier.
View profileSynthetic Lys-Glu-Asp-Trp tetrapeptide studied as a pancreas-tissue bioregulator.
View profileThe lipolytic C-terminal fragment of human growth hormone — the parent peptide that AOD-9604 was engineered from.
View profileC-terminal hGH fragment (177–191) historically investigated for lipolysis.
View profileA fat-targeting proapoptotic peptide that destroys the blood supply of white fat — striking in animals, but discontinued in humans for kidney toxicity.
View profileSmall-molecule NNMT inhibitor (often catalogued alongside peptides).
View profileThe pancreas’s second satiety hormone — co-secreted with insulin from the beta cell; its stabilized analog pramlintide treats diabetes, and the class now drives a new wave of obesity drugs.
View profileThe stabilized amylin analog — three prolines that stop native amylin from aggregating, turning the beta cell’s second satiety hormone into an injectable diabetes drug.
View profileThe most studied are incretin receptor agonists — GLP-1, dual GLP-1/GIP, and triple GLP-1/GIP/glucagon agonists — alongside amylin analogs. They act on satiety, insulin secretion, gastric emptying, and energy expenditure.
In studies they slow gastric emptying and signal satiety in the brain while improving glucose-dependent insulin release, which together reduce caloric intake and improve glycemic control.
Several GLP-1 and dual-agonist peptides are FDA-approved for type 2 diabetes and chronic weight management; others remain investigational. This page is a research reference, not medical advice.
How to weigh this evidence
Preclinical, observational, and randomized findings carry very different weight. The evidence hierarchy shows how to rank what you read before drawing conclusions.
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Ask in plain language — citation-backed answers from PubMed, PubChem & trials.
Build a peptide residue by residue with live chemistry, challenges & XP.
Sequence properties — pI, ε280, net charge & synthesis-difficulty flags.
Paste a certificate of analysis; grade its transparency and spot red flags.
Dose, dilution and syringe-unit math for reconstituting a vial.
Verified peptide monographs plus a live PubChem compound lookup.
Which peptides are best studied for weight loss & metabolic health, how they compare, and what the clinical evidence shows — citation-backed answers grounded in PubMed, PubChem, and ClinicalTrials.gov.