Optic Labs supplies incretin-class research peptides in Australia, including Retatrutide, Tirzepatide and Semaglutide. Every batch is third-party HPLC tested, and the Certificates of Analysis are published in our COA library. Orders are dispatched within Australia from Sydney, NSW.
Single, dual and triple receptor agonists
These compounds are commonly compared by their receptor profile. Semaglutide is studied as a single GLP-1 receptor agonist. Tirzepatide is studied as a dual GIP / GLP-1 receptor agonist. Retatrutide is studied as a triple agonist that also acts at the glucagon receptor. Researchers often study them side by side in comparative receptor-pharmacology work. For background, see our Retatrutide research guide.
Handling and reconstitution
All three are supplied as lyophilised powder in sealed research vials and are reconstituted with bacteriostatic water. Use our free peptide calculator for concentration maths, and store vials at 2–8°C away from light.
All products are supplied for laboratory research use only and are not for human consumption.