Kimberly
Online Facilitator
    Post count: 4291

    Hello – I know this is super frustrating. Hopefully, your doc is exploring possible causes. Potential reasons for fluctuation include aging (people often need to lower their dose as they age), remnants of thyroid tissue regenerating, major changes in weight, the onset of other gastrointestinal issues, getting a different prescription at the pharmacy, or even a manufacturer changing the formulation of their medication.