Root of Paeonia lactifiora Pall., family Ranunculaceae.
terete, flattened at both ends, 5-18 cm long, 1-2 cm in diameter. Surface
reddish brown when the cork removed, with knife-cutting marks. Prepared
as transversecutting pieces, cut surface even, nearly white or slightly
brown, with marked annular lines and radial vascular bundles. Bitter and
sour in taste , slightly cold in nature, and attributive to liver channeL
1. Nourish blood and astringe yin: For yin-deficiency and blood-deficiency
manifested as menoxenia, menaigia, leucorrhagia and metrorrhagia, usually
used together with Radix Rehmanniae and Radix Angelicae Sinensis; for
night sweat due to yin-deficiency and spontaneous perspiration due to
low body resistance and imbalance between ying-energy and wei-energy,
used together with Ramulus Cinnamomi; for muscular spasm and pain of extremities
due to blood deficiency, usually used together with Radix Glycyrrhizae;
for rheumatism due to insufficiency of yin-blood.
Calm liver yang: For deficiency of yin leading to hyperactivity of yang
and sthenia of liver-yang manifested as dizziness, headache, irritability
and insomnia; also for c6nvulsion of wind-syndrome resulting from sthenic
liver-yang, severe heat, yin-deficiency or blood-deficiency.
3. Soothe the liver and alleviate pain: For abnormal rising of liver energy
or dominant liver energy attacking stomach manifested as pain in the chest
1. Dilating the coronary artery and blood vessels of hind legs in dogs.
2. Lowering blood pressure transiently.
3: Inhibiting the intestines in rabbits in vitro.
4. Its component paeoniflorin inhibits the central nervous system.