It is usually possible to have Iodine 131 if you have stomach problems. However, the specific possibility of having Iodine 131 needs to be consulted with a doctor, depending on the individual’s condition. Iodine 131 is mainly used to treat conditions such as hyperthyroidism. The purpose of Iodine 131 treatment for hyperthyroidism is to destroy thyroid tissue and reduce thyroid hormone production. The method is simple, economical, and has a high cure rate. Iodine 131 treatment is usually not affected if the examiner has stomach problems. Complications such as radiation thyroiditis and induction of thyroid crisis may occur after iodine 131 treatment. Radioiodine treatment is prohibited during pregnancy and lactation. It is recommended that patients with gastric disease should seek medical treatment in time, and consult the doctor before doing iodine 131 to improve the relevant examination and clarify whether iodine 131 can be performed.