Alpha GPC powder or L-Alpha Glycerylphosphorylcholine powder, by BulkSupplements.com is one of the selections of our dietary supplements. Alpha GPC is an essential nutrient for the acetylcholine levels which is essential for overall wellness.* Each serving of this product contains 600mg which is about 1/4 tsp and contains 300mg of Alpha GPC, and may need an accurate milligram 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 5kg in resealable bags Our Alpha GPC 600 mg powder, or choline supplement, is pure, clean, and does not contain any artificial flavors. And this Alpha GPC powder, a nootropic supplement, is dairy free, soy free, gluten 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.