every part d plan has a different formulary or list of drugs it covers. though your plan likely covers a drug in the same class of medications it's possible that it does not pay for that particular medication. that's why it's so critical to review each plan's formulary very carefully before buying it. if medically you cannot switch to another medication you should work with your doctor to see if he/she can help you gain approval from your part d plan to cover some part of your costs. if you're unhappy with your drug plan you can switch it during the next open enrollment period but unfortunately that won't come around again until next october. it's on cms high risk medication (i. e. not covered) list as a "belladonna alkaloid" as a high risk medication (i. e. may not do what it is supposed to do and may cause side effects worse than the problem it is supposed to treat). since it's on this list it's not on any part d list. try canada.
why will medicare part d not cover my prescription for donnatal?