Pak Fung Pills is a proprietary Chinese medicine and should be taken preferably about 3-7 days after the menstrual period. During the period of taking the medicine, the dosage must be paid attention to, two times a day, one pill each time. Pak Fung Pills are mainly used to tonify Qi and nourish blood, regulate menstruation and stop leucorrhea. It is effective in treating deficiency of qi and blood, body weakness, lumbar and knee soreness, irregular menstruation, and excessive amount of leucorrhea. When taking the medicine, you should not eat cold, stimulating, deep-fried food, and should not take it together with cold medicine. If there is excessive menstrual flow, or too little menstrual flow and irregular bleeding during the period of taking the medicine, stop using the medicine first, and then go to the hospital to consult the doctor. If the symptoms are not relieved even after taking the medicine for 2 weeks, stop taking the medicine first and consult a doctor or change the medicine. Itchy, red and swollen skin while taking the medicine may be caused by allergy, stop using the medicine first. Pregnant women must be prohibited from using the drug to avoid affecting the fetus.