Weight Loss
Research Peptides

Weight loss research peptides are compounds studied for their effects on fat metabolism, appetite regulation, and energy expenditure in preclinical models. The most extensively studied include GLP-1 receptor agonists (Tirzepatide, Retatrutide, Semaglutide), GH fragment peptides (AOD-9604, Fragment 176-191), and metabolic regulators (AICAR, MOTS-c). All are supplied For Research Use Only and are not approved for human weight loss treatment.

Tirzepatide is a dual GIP/GLP-1 receptor agonist, it activates both glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptors simultaneously. Retatrutide is a triple agonist: GIP, GLP-1, and glucagon receptor. In Phase II clinical trials, Retatrutide demonstrated greater mean bodyweight reduction than tirzepatide at comparable doses, owing to the additional glucagon-mediated increase in energy expenditure. Both remain active research compounds..

AOD-9604 (Advanced Obesity Drug-9604) is a synthetic fragment of human growth hormone encompassing the lipolytic region (hGH176-191) without the anabolic IGF-1–stimulating domain. In preclinical models it activates beta-adrenergic receptors in adipocytes to stimulate lipolysis and inhibits lipogenesis, without raising blood glucose or IGF-1 levels. Fragment 176-191 is a related compound representing the same region, studied for its selective fat-targeting mechanism.

Stackpure supplies weight loss research peptides in multiple formats: lyophilised injectable vials (requiring reconstitution with bacteriostatic water), pre-mixed ready-to-use liquid solutions, nasal spray formulations, and oral capsule formats where applicable. GLP-1 agonists like Tirzepatide and Retatrutide are typically available as vials. AOD-9604 and Fragment 176-191 are available across multiple formats. Choose the format that best suits your research protocol.

Yes. Stackpure ships research peptides to the USA, UK, Canada, and Australia. All orders include a third-party COA confirming identity and purity. Delivery is 1–3 business days to the USA, UK, Canada, and Australia. Buyers are responsible for compliance with local import regulations.