What is the difference between a peptide and a protein?

It is mostly about length. Peptides are short chains of amino acids. Proteins are longer, bigger, and folded into more complex shapes. There is no exact cutoff, but peptides are generally the smaller ones.

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.