What can happen if I don't take Letrox for a few days?

Any disorder of the secretion of thyroid hormones requires constant monitoring of hormone levels. You can not give up pharmacotherapy from day to day, because you will deregulate the work of the thyroid gland - fluctuations in the level of TSH, and thus the symptoms of hypothyroidism. If you want to stop taking the medicine, you must consult an endocrinologist for this purpose. If you are unable to get to your primary care doctor, the gdziepolek.pl service also allows you to obtain a teleconsultation with your doctor: https://www.gdziepolek.pl/telekonsultacja I enclose additional information that may be helpful: https://www.gdziepolek.pl/artykuly/leki-na-niedoczynnosc-tarczycy https://www.gdziepolek.pl/artykuly/leki-na-tarczyce