This product was a GMP certified concentrated herbal powders manufactured by Koda Pharmaceuticals. All raw herbs are authenticated before being processed to make powders. Koda has been conducting tests for heavy metal and pesticide contamination for its single powders. The results obtained so far clearly show that Koda powders meet the most stringent criteria for control of heavy metal and pesticide contamination. Storage of about 300 single items of GMP certified concentrated herbal powders with the concentration ratio in average of 6:1 from dried herbs to finished products.