What is the difference between a peptide and a protein?

It is mostly a matter of length. Peptides are short chains of amino acids, while proteins are longer, larger, and more complex folded chains. The line is not exact, but peptides are generally the smaller molecules.

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of the basics. What peptides are, and how to read this database.