BioSteel’s plant based protein in cinnamon bun is are derived from plant sources-specifically brown rice, pea and pumpkin. This combination of plant sources provides a complete protein source. Protein is an easily available energy source for the body. When insufficient protein is ingested in the diet, or insufficient calories are taken in, the body will catabolize protein from muscle mass and then eventually from the organs to cover the deficit. BioSteels Vegan Protein provides 23g of protein per scoop and is NSF certified, low in calories and fat and made without dairy, gluten or soy.