It is not possible to determine exactly how long a woman can take Gynecology and Menstruation Tablets to take effect. If a woman has a good constitution, she can take it for 2-3 days to see the effect. If a woman is not in good health, she may need to take it for 1 week to see the effect. Gynecological Menstruation Tablets is a proprietary Chinese medicine, mainly composed of Shu Di Huang, Angelica Sinensis, Yan Hu Suo, Atractylodes Macrocephala, Glycyrrhiza Glabra and Jujube, which has the function of nourishing blood, softening liver, regulating qi and regulating menstruation. It is mainly used to treat irregular menstruation, unpredictable periods and abdominal pain during menstruation. Women should avoid cold, raw and cold foods while taking this drug. It is not recommended to take this drug if women have heavy menstruation, nor is it recommended to take this drug if women have a cold.