Hello – Dosing with anti-thyroid drugs (Methimazole, carbimazole) is actually part art, part science. Our initial dose is generally based on the severity of our hypERthyroidism. After a few weeks, most patients will see their thyroid hormone levels start to fall, and when this happens, the doctor will reduce the initial dose to try and keep the patient from becoming hypO. It can take some trial and error to find the “sweet spot” that will prevent you from being hypER…without making you hypO. As you go through this process, make sure that your doctor is looking at your actual thyroid hormone levels (T4 and T3) and not just TSH. It’s helpful if you can get hard copies of your labs at each visit, so you can see for yourself how your levels are responding to the meds.
If you are really feeling poorly, you might call the doctor’s office prior to your appointment, or ask if they can call you if they have a cancellation before Friday.
Take care!