Behind every good herbal line is a strong quality assurance team. To ensure that the herbs we use are vital and potent and to prevent any use of adulterants, every herb is checked by a team of quality control specialists. This team is headed by a director who holds a Ph.D. in chemistry and includes staff trained in Chinese and Western herbalism, microbiological assays, heavy metal screenings, and analytical chemistry.

Herbs are first checked in the traditional organoleptic manner (assessment of taste, smell, appearance, and relative quality) and are then subject to a variety of analytic tests. These include qualitative and quantitative analysis using ultraviolet and infrared spectrophotometry, thin layer chromatography (TLC), and high performance liquid chromatography (HPLC) as well as Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) screening for heavy metals and full microbiological testing to ensure all herbs are free of pathogenic bacteria. All tablets meet the disintegration criteria of the United States Pharmacopoeia.