Low menstrual flow and dark color are mostly caused by cold condensation and blood stasis, etc. You can take medicines such as Shaobu (Abdomen) Pills and Ai Hui Warming the Uterus Pills.
Shaohuayouhuayu Pill is composed of Angelica sinensis, red peony, cumin, Yanhusuo, myrrh, Pu huang, Wu Lingyi, Rhizoma Ligustici Chuanxiong, cinnamon and ginger. It is effective in warming menstruation and blood circulation, dispersing cold and relieving pain (relieving pain by removing cold from the body), treating scanty menstruation, late menstruation, dysmenorrhea, and menstrual blood that is purple and dark with clots caused by cold condensation and blood stasis.
If similar symptoms occur, it is recommended to consult a doctor in time and do not self-medicate.