After radio iodine
treatment you can still be hyperthyroid for few more weeks as the radio iodine treatment treatment takes up to 3 months for its complete effect. Radio iodine treatment may not cure Graves disease in 5-10% of patients. Since hyperthyroidism
is a more severe disease compared to hypothyroidism
, most physicians prefer to continue carbimazole
till they are hypothyroid.
If I were your treating doctor I would continue carbimazole for 3-4 weeks post radio iodine treatment, if you are hypothyroid I will stop medication and follow up Thyroid function test after 4-6 weeks. If you are hypothyroid, i would start on Thyroxine
supplementation, if hyperthyroid smaller dose of carbimazole 5-10 mg.
Hope I have answered your question. If you have any further questions I will be happy to help
Dr Ajish TP