Betadine should not be used in people with hyperthyroidism because it contains iodine, which can be absorbed by damaged skin and affect the functioning of the thyroid gland, which is bad for people with hyperthyroidism and could potentially increase the risk of complications.

The thyroid gland uses iodine to produce thyroid hormones, so providing iodine can lead to an increase in the production of these hormones, which can exacerbate the symptoms of hyperthyroidism.

If you have used Betadine 2-3 times, it is unlikely to cause significant complications, especially if it has only been used topically and for a short time. However, long-term use of Betadine or its use on large areas of skin can lead to iodine absorption by damaged skin and increase the risk of thyroid problems, especially in people with hyperthyroidism.

In any case, if you have concerns about the use of Betadine, it is always advisable to consult your doctor for personalized medical advice and guidance on the use of the medication or disinfectant in question. If you do not have the opportunity to consult your doctor, you can use the teleconsultation here:

https://www.gdziepolek.pl/telekonsultacja/z-endokrynologiem