All of the herbs used in Dr. Xie's Jing Tang Herbal formulas are grown in China, with the majority produced by farmers. Some are also grown in the wild. We use TLC (thin layer chromatography) and HPLC (high performance liquid chromatography), special procedures which insure potency and test for active constituents. Every batch of herbs is tested before, during and after processing.
All these raw material and herbal products comply with the new stringent Good Manufacturing Practices (GMP). GMP certification means that the site and methods employed in the production of our herbs has been subject to a thorough quality control investigation and is certified to be in compliance. Tests for moisture content, dissolution, heavy metals (lead, arsenic, mercury, cadmium) and microbial content (including bacteria and fungi) are performed on every batch of finished product. When the products arrive in the U.S.A. they are subject to an additional review by the FDA, ensuring that the products you receive meet every safety standard.
Chinese herbs can be categorized as top, middle and low grade. To ensure the herbal quality and efficacy, we have always used only top graded herbs for all our formulas. Because of this reason, we have successfully assisted herbalists to help their patients since 1999.