Kampo is Chinese herbal medicine as it was reformulated in Japan, and it is the most regulated traditional system on this site: 148 formulas are covered by Japanese national health insurance, manufactured to fixed specifications and prescribed by doctors. We carry 127 of those 148. That standardisation is why Kampo has more usable trial evidence than most traditions here — a trial of a named Kampo formula tested a product you can still buy. Formulas that are Chinese in origin and merely also used in Japan are on the Traditional Chinese Medicine hub instead, which is where 43 of them moved when this was checked.
Not every remedy names a tradition. Browse the full A–Z index for all 3,787 remedies, including the 255 with no recorded tradition.