It is difficult to generalize whether or not Mucuna Pruriens Pills affects the menstrual period, as the composition of the drug tends to do so. Particularly, women with weak physique need to use it with caution. Mu Xiang Penang Pill is mainly composed of Mu Xiang, betel nut, trigonelline, cypress, yellow rhubarb, rhubarb, manganese nitrate, petunia seeds, curcuma, etc. It has the effect of promoting the flow of qi and directing stagnation, diarrhea, heat, and feces (removing heat evil and dredging the feces). It is used in the treatment of damp-heat internal stagnation, dysentery, distension of the epigastric region, stagnation of the gastrointestinal system, and inability to pass feces. It is contraindicated in pregnant women. Huanglian, Phellodendron Bark and Petunia Seed in this medicine are cold in nature, which may easily lead to blood stasis in the body of women, especially those with weak constitution, and may also cause menstrual irregularities or delayed menstruation. The ingredients of Sanguisorba and Curcuma longa can move qi and break blood stasis, and should not be used by women with heavy menstrual periods, as they may aggravate heavy menstruation and may also lead to irregular menstruation. If you need to take Muxiang betel nut pills, you should be under the guidance of a doctor, do not take medication on your own, to avoid the adverse consequences of irrational use of medication.