Table 2.

Differences between RPR and RPA.

Classification	RPR	RPA
Category	Heat-clearing blood-cooling medicinal	Blood-tonifying medicinal
Flavors and natures	Slightly cold, bitter	Slightly cold, bitter, and sour
Meridian entry	The liver	The liver and the spleen
Function	Clear heat and cool the blood, dissipate stasis to relieve pain	Nourish blood and regulate menstruation, arrest yin to check sweating, emolliate the liver and relieve pain, calm and repress liver yang
Indications	Heat entering construction-blood, macula, epistaxis, swelling, and pain of eye, corneal opacity and vision obstruction, liver depression and hypochondriac pain, dysmenorrhea, and traumatic injury	Irregular menstruation, spontaneous sweating and night sweating, contracture of the limbs, headache, and dizziness

Radix Paeoniae Rubra (RPR), Radix Paeoniae Alba (RPA).