GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation). Packaged in the USA by a family owned and operated company since 1968. Curcumin is the major bioactive component found in the roots of turmeric (Curcuma longa), a plant belonging to the ginger family. Turmeric has been used as a coloring and flavoring agent in South Asian cuisines for centuries, and it has also been recommended by traditional Ayurvedic herbalists for thousands of years. Curcumin has been extensively researched by modern scientists for its various biological activities. Natural color variation may occur in this product. Suggested Use Mix 1 dropperful in warm water 1 to 3 times daily.