The foundational biology. What peptides are, how your body makes them, how they work at the receptor level, why they matter in research, and the important distinction between research peptides and pharmaceutical peptides. Five short lessons. Start here.

The incretin family, GLP-1 in depth, GLP-2's role in intestinal biology, dual and triple agonists (tirzepatide, retatrutide), and why there is no such thing as a "GLP-3." Research-context only. 5 lessons.

Practical storage — how to handle lyophilized peptide before reconstitution, how to reconstitute without damaging it, and how to keep the solution stable after. 3 short lessons, ~7 min total read time.