If you're in the U.S., you either have original Medicare and a stand alone Rx plan, or Medicare Advantage. I only know about the stand alone prescription plans. If you have one of these and didn't change plans by December 7th, you'll have the same plan next year. Log into Medicare.gov and click on 2026 Rx plans (Part D). Find the plan you will have for next year (the one you have now if you didn't change plans). You will have the option to put in a Medication List. Enter the medication you would like to take, and see if it is covered. You will be able to see the monthly premium and the drug cost. If the drug isn't covered, delete it from your list and enter another one, and see if that is covered. Maybe someone else can address what to do if you have Medicare Advantage.