hello! Generally speaking, it will be effective in 3-5 days. Maren Pills moisten the intestines and relax the bowels. It is used for constipation caused by intestinal heat and fluid deficiency, with symptoms of hard stool and abdominal fullness and discomfort; Habitual constipation with the above symptoms. Attention: 1. Diet should be light, avoid alcohol and spicy food; 2. It is not advisable to take nourishing traditional Chinese medicine at the same time during medication; 3. Those with serious chronic diseases such as hypertension, heart disease, liver disease, diabetes and kidney disease should be taken under the guidance of a doctor; 4. Children, pregnant women, lactating women and the elderly and infirm should take it under the guidance of a doctor; 5. Take it in strict accordance with the usage and dosage, and this product should not be taken for a long time; 6. If the symptoms are not relieved after taking the medicine for 3 days, you should go to the hospital; 7. It is forbidden for those who are allergic to this product, and should be used with caution for those who are allergic. I hope I can help you.