Spiru-Tein is scientifically formulated with isolate soy protein from only non-genetically modified (non-GMO) soybeans - as nature intended. 25 Grams of soy protein a day, as part of a diet low in saturated fat and cholesterol, may reduce the risk of heart disease. A serving of Spiru-Tein supplies 6.25 Grams of soy protein.