A Pea Protein is a rich source of purines, which are substances in both animal and plant foods that the body converts to uric acid. While purines aren't bad in normal amounts, excess doses could make it difficult for your kidneys to get rid of all the uric acid. It is a source of protein derived and extracted in powder form from the yellow and green split peas, Pisum sativum, classified in the legume food group. It is among the most hypoallergenic of all protein powders, as it contains no gluten, soy or dairy. The Pea Protein is made for use by people going to gym.