痛經丸 [－经－]

Jyutping tung3 ging1 jyun2
Pinyin tòng jīng wán

Definitions (Wiktionary)
  1. noun
    A brownish-black pill used in traditional Chinese medicine "to promote blood flow, dispel cold, regulate menstruation and relieve pain, in the treatment of abdominal pain during menstruation due to stagnation of blood by cold".