Nutricost Organic Shiitake Mushroom Powder is a high-quality dietary supplement made from 100% organic shiitake mushrooms. Each serving contains 1 gram of organic shiitake powder, and the product is non-GMO and gluten-free. The powder is third-party tested by ISO-accredited laboratories and manufactured in a GMP compliant, FDA registered facility. It comes in a 100-gram bottle, providing 113 servings per container. The product is unflavored and can be mixed with water or added to various recipes.