Marine Collagen powder by BulkSupplements.com is one of the selections of our dietary supplements. Collagen is an essential protein in the body and can be taken as supplements. Our Marine Collagen powder is sourced from Hydrolyzed Fish Collagen. Each serving of this product contains 2500mg of Hydrolyzed Fish powder which is about 1 tsp and may needs a gram scale to measure. Contents of this product is sold by weight, not volume and settling may occur. And, we also sell it different sizes ranging from 100g to 1kg in resealable bags Our Collagen Peptides powder, or Marine Collagen powder, is pure, clean, and does not contain any fillers, additives and artificial flavors. And our Collagen Powder Unflavored, or Hydrolyzed Collagen powder, is also dairy free, gluten free, soy free, yeast free, 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 that test our products at multiple stages during production, from raw material to finished products, and ensures compliance, standards, and consistency.