Kimberly
Online Facilitator
Post count: 4262

Hello and welcome – hopefully, others will chime in here with their experiences, but joint pain and swelling can be potential side effects of methimazole. That’s good that you have your doctor in the loop and are ruling out potential other causes. Hopefully, you will also have a followup discussion about going back on the methimazole or pursuing other treatment options (RAI, surgery) to make sure that your thyroid levels stay under control.