Unlike the animal-derived versions, foods of plant origin are not complete protein sources, which means that they don’t contain all the essential amino acids your body requires. However, with complementing (with a combination of different plant protein sources) you can get a protein complex that is of full value. In Vegan Protein we achieved this by combining two protein sources that perfectly complement each other – rice protein that contains little lysine, but it is rich in sulphur-containing amino acids (such as cysteine and methionine) and pea protein that contains less of the sulphur-containing amino acids while it is rich in lysine. There are additional extras added to this excellent base.