Thanks for reaching out to ask about our nattō-derived vitamin K2! We derive our K2 from nattō made with non-GMO soybeans. Nattō, a traditional Japanese food made from fermented soybeans, is the highest food source of naturally-occurring Vitamin K2! The process of fermentation and extraction removes soy from the product. However, if you have a soy allergy, this product may not be appropriate for you. Please review the ingredients with your physician or healthcare professional before using, if you are concerned about the nattō-derived K2.