Extensive modern scientific research in Japan has validated the effectiveness of kampo medicines.
[citation needed] In October, 2000 a nationwide study was carried out that reported that 72% of registered physicians prescribe kampo medicines [2].
The two leading companies making kampo medicines are Tsumura (ツムラ) and Kracie (クラシエ) the former name Kanebō (カネボウ) [3].
Additionally, things like sustained release (徐放性製剤) have worked their way into the kampo and TCM worlds.
[1] The 14th edition of the Japanese Pharmacopoeia (JP) (日本薬局方 Nihon yakkyokuhō) lists 165 herbal ingredients that are used in kampo .
The most common herb in kampo medicine is Glycyrrhizae Radix (Chinese liquorice root).