Reishi Mushroom Extract, in powdered extract form, by BulkSupplements.com is sourced from the Reishi mushroom, Ganoderma lucidum. Each serving of this product contains 1000mg or 1g of Reishi Mushroom Extract, which is about 1/3 tsp and an accurate milligram scale may be required to measure. We also sell this product in a variety of different sizes, ranging from 100g to 5kg in resealable bags. Contents of this product are sold by weight, not volume and settling may occur. Our Reishi Mushroom Extract powder, or Reishi Extract powder, is pure, natural and does not contain any additives, or artificial flavors. And this Reishi Mushroom Extract, or Reishi Mushroom powder is dairy free, gluten free, soy free, yeast free, and contains no added sugar. All products by BulkSupplements.com are manufactured according to cGMP Standards to ensure the highest quality for manufacturing, packaging, labeling, and holding operations. We work with a third-party laboratory to test our products at multiple stages during production, from raw material to finished products, and ensures compliance, standards, and consistency.