How long it takes to sleep in a bed with your lover after taking iodine 131 is related to the amount of iodine 131 taken and cannot be generalized, for example, when the dosage of iodine 131 is 1.85GBq, you can usually sleep in a bed with your lover after 16 days. When the dosage of iodine 131 is 3.70 GBq, you can sleep in a bed with your loved one after 20 days; when the dosage of iodine 131 is 5.55 GBq, you can sleep in a bed with your loved one after 22 days; and when the dosage of iodine 131 is 7.40 GBq, you can sleep in a bed with your loved one after 23 days. Necessary and appropriate living isolation after Iodine 131 treatment is an integral part of the treatment process, and patients must strictly follow the doctor’s instructions for proper isolation after taking Iodine 131 to protect the safety of their family members as well as the public.