Kun Fukang Capsules should be avoided during menstruation for women with normal or high menstrual flow, because the main function of Kun Fukang Capsules is to treat pelvic inflammation caused by stagnation of qi and blood stasis and stagnation of dampness-heat, and the clinical symptoms are mainly abnormal abdominal pain and high amount of diarrhea. The main ingredients of Kun Fukang Capsules are red peony, bitter ginseng, fragrant herbs and other traditional Chinese medicines that have the effects of activating blood circulation, resolving blood stasis, clearing heat and detoxifying, so using them during a woman’s menstrual period will lead to an increase in the amount of menstruation or prolongation of menstruation. The herbal ingredients of Kun Fukang Capsules have certain effects of regulating menstruation and relieving pain, so for women with low menstrual flow and dysmenorrhea, they can be improved by using Kun Fukang Capsules during menstruation. However, it should be noted that, because of the complexity of the composition of proprietary Chinese medicines, if there is a significant change in the amount of menstruation after the use of medication, it is necessary to stop the medication in a timely manner to consult a doctor for examination.