The generic name for Mannitol is Levonorgestrel IUD System. Abdominal pain after using levonorgestrel IUD can disappear in 2-7 days, but it is impossible to generalize due to different personal situations. After the patient is put on the levonorgestrel IUD, the IUD will stimulate the uterus to contract, and some patients will feel the pain in the abdomen, accompanied by symptoms such as bloating and pain in the abdomen. If the patient’s uterus has a strong ability to adapt, the abdominal pain can usually be relieved in about 2 days. Some patients with severe uterine contractions may need about 7 days to disappear. However, if patients still experience pain beyond 7 days, it is considered to be due to incorrect placement of the IUD or rejection of the IUD. In daily life, patients should keep the perineum clean during the application of levonorgestrel IUD, and should not have coitus before the discomfort improves to avoid secondary infection or unwanted pregnancy. If the patient on the levonorgestrel intrauterine device continues to experience abdominal pain, it is necessary to pay attention to the situation, and it is recommended to go to the hospital in a timely manner. Once the cause is clear, you need to actively cooperate with the doctor to take relevant treatment measures.