Mannitol is the levonorgestrel IUD system, and people with hyperthyroidism can go on the levonorgestrel IUD system. Levonorgestrel intrauterine sterilization system will not lead to exacerbation of the condition of hyperthyroidism, but there is no treatment for hyperthyroidism. Levonorgestrel IUD belongs to a kind of contraceptive ring, and its main function is to prevent pregnancy. After placing levonorgestrel IUD in the uterine cavity, it can keep progesterone at a certain level, so that the uterine lining is not easy to conceive. Patients with hyperthyroidism who have a need for contraception can use the levonorgestrel intrauterine sterilization system for contraception. The clinic has not found that the levonorgestrel intrauterine sterilization system will lead to an aggravation of the condition of hyperthyroidism, but it has not been found that the levonorgestrel intrauterine sterilization system can help hyperthyroidism recover, and there is no correlation between the two. Hyperthyroidism is a clinical syndrome resulting from an excess of thyroid hormones, and it is recommended that patients with hyperthyroidism go to the hospital for treatment, which can be carried out under the guidance of the doctor, such as medication, iodine 131 treatment, surgical treatment and so on. During the treatment, you should actively cooperate with the doctor, which is favorable to the recovery of the condition.