Precautions
Contraindicated in cases of yin deficiency with heat signs, headaches due to ascendant Liver yang, qi deficiency, or excessive menstrual bleeding. Vomiting and dizziness may occur from overdosage. According to some traditional texts, this herb antagonizes Shan Zhu Yu (asiatic cornelian cherry) and Huang Qi (astragalus root), counteracts Hua Shi (talc) and Huang Lian (coptis root), and is incompatible with Li Lu (veratrum root and rhizome).