Weight Loss Peptides.
Research-Grade. Verified. Affordable.
Research peptides most commonly studied for weight-loss and metabolic endpoints — GLP 3, GLP 2, Tesamorelin, MOTS-c and related compounds. Every lot is HPLC-tested, LC-MS confirmed, endotoxin-screened, and ships cold from our Las Vegas facility with a lot-specific Certificate of Analysis.
Independently tested per lot
From Las Vegas, NV
Not for human consumption
Metabolic & weight-loss peptides in stock
FAQ · Weight-loss research peptides
What peptides are used in weight-loss research?
Metabolic research peptides commonly studied for weight-loss endpoints include GLP-1 receptor agonist analogs, dual GIP/GLP-1 analogs (tirzepatide-class), triple agonists (retatrutide-class), Tesamorelin (a GHRH analog), and MOTS-c. Sin City Peptides supplies research-grade versions with lot-specific COAs.
Are these peptides for human use?
No. All compounds sold by Sin City Peptides are for laboratory research use only and are not approved for human consumption. See our research-use terms and legal disclosures.
Do you sell cheap weight-loss peptides?
We price research peptides affordably by shipping direct from our Las Vegas lab with no distributor markup — while still meeting ≥98% HPLC purity, LC-MS identity confirmation, and endotoxin screening on every lot.
What is the difference between GLP-1, GLP 2 and GLP 3?
In our catalog, GLP-1 refers to single-receptor GLP-1 agonists, GLP 2 refers to dual GIP/GLP-1 agonists (tirzepatide-class), and GLP 3 refers to triple GIP/GLP-1/glucagon agonists (retatrutide-class). Each is a distinct research-grade compound with its own COA.