Unlike many similar products Nutricost Shiitake Mushroom has been certified made with Organic by Ccof. Look for the organic certification on the bottle. There is 500mg of made with Organic Shiitake Mushroom per capsule for 1,000mg per serving. There are 180 vegetarian capsules - 90 servings In each bottle. This product is non-gmo, gluten free, soy free, non-gmo, and vegetarian friendly. Easily add made with organic shiitake mushroom to your daily regimen.