Peptides 101
A peptide is a short chain of amino acids — the same building blocks that make up proteins, just in a much shorter sequence (typically 2 to 50 amino acids). Because the body already communicates with peptides, they are among the most intensively studied classes of molecules in modern biomedical research: the sequence acts like a key, and specific receptors act like locks.
How they are made
Peptides are built by solid-phase peptide synthesis, adding one amino acid at a time to a growing chain, then purified by HPLC. The result is freeze-dried (lyophilized) into the white powder you see in the vial.
Why they are lyophilized
Peptides degrade in water over time. Removing the water freezes the molecule in place, so a sealed lyophilized vial stays stable for months to years when kept cold and dark.
What “mg” on the label means
The number on a vial (5 mg, 10 mg…) is the mass of peptide inside — not a volume. Concentration is only defined once you decide how much diluent to add, which is exactly what the calculator below works out.
Not medical advice
Nothing on this page is medical or dosing advice. Statements have not been evaluated by the FDA, and our products are not intended to diagnose, treat, cure, or prevent any disease.
Curious what a specific compound has been studied for? Every product page carries a plain-English summary and the areas it is most studied in — browse the catalog.