ABSTRACT
R. officinale
Baill.,
Baill.
,
R. coreanum
Nakai,
and
R. undulatum
L.,
is used in remedies for blood stagnation syndrome (called
“Oketsu syndrome”
in Japanese traditional medicine) as well as a
purgative agent
in Japanese, Korean, and Chinese traditional medicines. Among them, the rhizome of
R. undulatum
, a Korean rhubarb, is considered to have less purgative effect but more potent effect on Oketsu syndrome than other kinds of rhubarbs.
