Medicare Part D Drug Coverage List
According to the Centers for Medicare & Medicaid Services (CMS) 2026 Part D formulary data, this list covers 6,046 drugs across Medicare Part D plans, sorted by how broadly each is covered. Under the Inflation Reduction Act, Part D out-of-pocket costs are capped at $2,000 a year in 2026; see our methodology for how coverage breadth is calculated.
Coverage varies by plan and geography. Verify drug coverage with your specific plan before making decisions.
| Drug Name | Plans Covering | Coverage % | Avg Tier | PA % | 2023 Benes |
|---|---|---|---|---|---|
| diltiazem hydrochloride 90 MG Oral Tablet diltiazem hydrochloride | 5,067 | 100% | T2 | 0% | 965,356 |
| diltiazem hydrochloride 120 MG Oral Tablet diltiazem hydrochloride | 5,067 | 100% | T2 | 0% | 965,356 |
| venlafaxine 25 MG Oral Tablet venlafaxine | 5,067 | 100% | T2 | 0% | 954,551 |
| venlafaxine 37.5 MG Oral Tablet venlafaxine | 5,067 | 100% | T2 | 0% | 954,551 |
| venlafaxine 50 MG Oral Tablet venlafaxine | 5,067 | 100% | T2 | 0% | 954,551 |
| venlafaxine 75 MG Oral Tablet venlafaxine | 5,067 | 100% | T2 | 0% | 954,551 |
| venlafaxine 100 MG Oral Tablet venlafaxine | 5,067 | 100% | T2 | 0% | 954,551 |
| ketorolac tromethamine 5 MG/ML Ophthalmic Solution ketorolac tromethamine | 5,067 | 100% | T2 | 0% | 951,621 |
| warfarin sodium 1 MG Oral Tablet warfarin sodium | 5,067 | 100% | T1 | 0% | 942,245 |
| warfarin sodium 2 MG Oral Tablet warfarin sodium | 5,067 | 100% | T1 | 0% | 942,245 |
| warfarin sodium 2.5 MG Oral Tablet warfarin sodium | 5,067 | 100% | T1 | 0% | 942,245 |
| warfarin sodium 3 MG Oral Tablet warfarin sodium | 5,067 | 100% | T1 | 0% | 942,245 |
| warfarin sodium 4 MG Oral Tablet warfarin sodium | 5,067 | 100% | T1 | 0% | 942,245 |
| warfarin sodium 6 MG Oral Tablet warfarin sodium | 5,067 | 100% | T1 | 0% | 942,245 |
| warfarin sodium 10 MG Oral Tablet warfarin sodium | 5,067 | 100% | T1 | 0% | 942,245 |
| warfarin sodium 5 MG Oral Tablet warfarin sodium | 5,067 | 100% | T1 | 0% | 942,245 |
| warfarin sodium 7.5 MG Oral Tablet warfarin sodium | 5,067 | 100% | T1 | 0% | 942,245 |
| memantine hydrochloride 5 MG Oral Tablet memantine hydrochloride | 5,067 | 100% | T2 | 49.7% | 892,907 |
| memantine hydrochloride 10 MG Oral Tablet memantine hydrochloride | 5,067 | 100% | T2 | 49.7% | 892,907 |
| dicyclomine hydrochloride 20 MG Oral Tablet dicyclomine hydrochloride | 5,067 | 100% | T2 | 39.7% | 887,927 |
| dicyclomine hydrochloride 10 MG Oral Capsule dicyclomine hydrochloride | 5,067 | 100% | T2 | 39.7% | 887,927 |
| oxybutynin chloride 5 MG Oral Tablet oxybutynin chloride | 5,067 | 100% | T2 | 0.6% | 881,680 |
| cefuroxime 1500 MG Injection cefuroxime | 5,067 | 100% | T3 | 10% | 873,273 |
| cefuroxime 750 MG Injection cefuroxime | 5,067 | 100% | T3 | 10% | 873,273 |
| cefuroxime 500 MG Oral Tablet cefuroxime | 5,067 | 100% | T2 | 0% | 873,273 |
| cefuroxime 250 MG Oral Tablet cefuroxime | 5,067 | 100% | T2 | 0% | 873,273 |
| diazepam 5 MG/ML Oral Solution diazepam | 5,067 | 100% | T2 | 47.6% | 872,368 |
| diazepam 1 MG/ML Oral Solution diazepam | 5,067 | 100% | T2 | 47.6% | 872,368 |
| diazepam 2 MG Oral Tablet diazepam | 5,067 | 100% | T2 | 47.3% | 872,368 |
| diazepam 5 MG Oral Tablet diazepam | 5,067 | 100% | T2 | 47.3% | 872,368 |
| diazepam 10 MG Oral Tablet diazepam | 5,067 | 100% | T2 | 47.3% | 872,368 |
| dexamethasone 0.5 MG Oral Tablet dexamethasone | 5,067 | 100% | T2 | 0% | 850,184 |
| dexamethasone 0.75 MG Oral Tablet dexamethasone | 5,067 | 100% | T2 | 0% | 850,184 |
| dexamethasone 1 MG Oral Tablet dexamethasone | 5,067 | 100% | T2 | 0% | 850,184 |
| dexamethasone 2 MG Oral Tablet dexamethasone | 5,067 | 100% | T2 | 0% | 850,184 |
| dexamethasone 4 MG Oral Tablet dexamethasone | 5,067 | 100% | T2 | 0% | 850,184 |
| dexamethasone 6 MG Oral Tablet dexamethasone | 5,067 | 100% | T2 | 0% | 850,184 |
| dexamethasone 0.001 MG/MG / neomycin 0.0035 MG/MG / polymyxin B 10 UNT/MG Ophthalmic Ointment dexamethasone | 5,067 | 100% | T2 | 0% | 850,184 |
| dexamethasone 1 MG/ML / tobramycin 3 MG/ML Ophthalmic Suspension dexamethasone | 5,067 | 100% | T2 | 0% | 850,184 |
| sitagliptin phosphate 50 MG Oral Tablet [Januvia] sitagliptin phosphate | 5,067 | 100% | T3 | 0.3% | 843,391 |
| sitagliptin phosphate 25 MG Oral Tablet [Januvia] sitagliptin phosphate | 5,067 | 100% | T3 | 0.3% | 843,391 |
| sitagliptin phosphate 100 MG Oral Tablet [Januvia] sitagliptin phosphate | 5,067 | 100% | T3 | 0.3% | 843,391 |
| amitriptyline hydrochloride 150 MG Oral Tablet amitriptyline hydrochloride | 5,067 | 100% | T2 | 29.1% | 838,449 |
| amitriptyline hydrochloride 25 MG Oral Tablet amitriptyline hydrochloride | 5,067 | 100% | T2 | 29.1% | 838,449 |
| amitriptyline hydrochloride 50 MG Oral Tablet amitriptyline hydrochloride | 5,067 | 100% | T2 | 29.1% | 838,449 |
| amitriptyline hydrochloride 75 MG Oral Tablet amitriptyline hydrochloride | 5,067 | 100% | T2 | 29.1% | 838,449 |
| amitriptyline hydrochloride 100 MG Oral Tablet amitriptyline hydrochloride | 5,067 | 100% | T2 | 29.1% | 838,449 |
| amitriptyline hydrochloride 10 MG Oral Tablet amitriptyline hydrochloride | 5,067 | 100% | T2 | 29.1% | 838,449 |
| sucralfate 1000 MG Oral Tablet sucralfate | 5,067 | 100% | T2 | 0% | 800,942 |
| amiodarone hydrochloride 200 MG Oral Tablet amiodarone hydrochloride | 5,067 | 100% | T2 | 0% | 797,134 |
| chlorthalidone 25 MG Oral Tablet chlorthalidone | 5,067 | 100% | T2 | 0% | 783,324 |
| chlorthalidone 50 MG Oral Tablet chlorthalidone | 5,067 | 100% | T2 | 0% | 783,324 |
| levetiracetam 250 MG Oral Tablet levetiracetam | 5,067 | 100% | T2 | 0% | 766,583 |
| levetiracetam 500 MG Oral Tablet levetiracetam | 5,067 | 100% | T2 | 0% | 766,583 |
| levetiracetam 750 MG Oral Tablet levetiracetam | 5,067 | 100% | T2 | 0% | 766,583 |
| levetiracetam 1000 MG Oral Tablet levetiracetam | 5,067 | 100% | T2 | 0% | 766,583 |
| levetiracetam 100 MG/ML Oral Solution levetiracetam | 5,067 | 100% | T2 | 0% | 766,583 |
| levetiracetam 250 MG Tablet for Oral Suspension [Spritam] levetiracetam | 5,067 | 100% | T3 | 15.5% | 766,583 |
| levetiracetam 500 MG Tablet for Oral Suspension [Spritam] levetiracetam | 5,067 | 100% | T3 | 15.5% | 766,583 |
| naloxone hydrochloride 80 MG/ML Nasal Spray [Kloxxado] naloxone hydrochloride | 5,067 | 100% | T3 | 0% | 744,446 |
| ipratropium bromide 0.2 MG/ML Inhalation Solution ipratropium bromide | 5,067 | 100% | T2 | 99.7% | 743,544 |
| ipratropium bromide 0.021 MG/ACTUAT Metered Dose Nasal Spray ipratropium bromide | 5,067 | 100% | T2 | 0% | 743,544 |
| ipratropium bromide 0.042 MG/ACTUAT Metered Dose Nasal Spray ipratropium bromide | 5,067 | 100% | T2 | 0% | 743,544 |
| dorzolamide 20 MG/ML / timolol 5 MG/ML Ophthalmic Solution dorzolamide | 5,067 | 100% | T2 | 0% | 710,453 |
| dorzolamide 20 MG/ML Ophthalmic Solution dorzolamide | 5,067 | 100% | T2 | 0% | 710,453 |
| paroxetine hydrochloride 40 MG Oral Tablet paroxetine hydrochloride | 5,067 | 100% | T2 | 31.8% | 697,107 |
| paroxetine hydrochloride 10 MG Oral Tablet paroxetine hydrochloride | 5,067 | 100% | T2 | 31.8% | 697,107 |
| paroxetine hydrochloride 20 MG Oral Tablet paroxetine hydrochloride | 5,067 | 100% | T2 | 31.8% | 697,107 |
| paroxetine hydrochloride 30 MG Oral Tablet paroxetine hydrochloride | 5,067 | 100% | T2 | 31.8% | 697,107 |
| paroxetine hydrochloride 2 MG/ML Oral Suspension paroxetine hydrochloride | 5,067 | 100% | T3 | 31.2% | 697,107 |
| torsemide 20 MG Oral Tablet torsemide | 5,067 | 100% | T2 | 0% | 675,579 |
| torsemide 10 MG Oral Tablet torsemide | 5,067 | 100% | T2 | 0% | 675,579 |
| torsemide 100 MG Oral Tablet torsemide | 5,067 | 100% | T2 | 0% | 675,579 |
| propranolol hydrochloride 60 MG Oral Tablet propranolol hydrochloride | 5,067 | 100% | T2 | 0% | 671,925 |
| propranolol hydrochloride 10 MG Oral Tablet propranolol hydrochloride | 5,067 | 100% | T2 | 0% | 671,925 |
| propranolol hydrochloride 20 MG Oral Tablet propranolol hydrochloride | 5,067 | 100% | T2 | 0% | 671,925 |
| propranolol hydrochloride 40 MG Oral Tablet propranolol hydrochloride | 5,067 | 100% | T2 | 0% | 671,925 |
| propranolol hydrochloride 80 MG Oral Tablet propranolol hydrochloride | 5,067 | 100% | T2 | 0% | 671,925 |
| acyclovir 400 MG Oral Tablet acyclovir | 5,067 | 100% | T2 | 0% | 670,065 |
| acyclovir 800 MG Oral Tablet acyclovir | 5,067 | 100% | T2 | 0% | 670,065 |
| acyclovir 200 MG Oral Capsule acyclovir | 5,067 | 100% | T2 | 0% | 670,065 |
| sacubitril 6 MG / valsartan 6 MG Oral Pellet [Entresto] sacubitril | 5,067 | 100% | T3 | 0.9% | 663,587 |
| sacubitril 15 MG / valsartan 16 MG Oral Pellet [Entresto] sacubitril | 5,067 | 100% | T3 | 0.9% | 663,587 |
| ropinirole 0.25 MG Oral Tablet ropinirole | 5,067 | 100% | T2 | 0% | 657,631 |
| ropinirole 0.5 MG Oral Tablet ropinirole | 5,067 | 100% | T2 | 0% | 657,631 |
| ropinirole 3 MG Oral Tablet ropinirole | 5,067 | 100% | T2 | 0% | 657,631 |
| ropinirole 4 MG Oral Tablet ropinirole | 5,067 | 100% | T2 | 0% | 657,631 |
| ropinirole 5 MG Oral Tablet ropinirole | 5,067 | 100% | T2 | 0% | 657,631 |
| ropinirole 1 MG Oral Tablet ropinirole | 5,067 | 100% | T2 | 0% | 657,631 |
| ropinirole 2 MG Oral Tablet ropinirole | 5,067 | 100% | T2 | 0% | 657,631 |
| topiramate 25 MG/ML Oral Solution topiramate | 5,067 | 100% | T3 | 48.8% | 644,196 |
| topiramate 15 MG Oral Capsule topiramate | 5,067 | 100% | T2 | 7.9% | 644,196 |
| topiramate 25 MG Oral Capsule topiramate | 5,067 | 100% | T2 | 7.9% | 644,196 |
| topiramate 25 MG Oral Tablet topiramate | 5,067 | 100% | T1 | 7.9% | 644,196 |
| topiramate 50 MG Oral Tablet topiramate | 5,067 | 100% | T1 | 7.9% | 644,196 |
| topiramate 100 MG Oral Tablet topiramate | 5,067 | 100% | T1 | 7.9% | 644,196 |
| topiramate 200 MG Oral Tablet topiramate | 5,067 | 100% | T1 | 7.9% | 644,196 |
| levocetirizine dihydrochloride 5 MG Oral Tablet levocetirizine dihydrochloride | 5,067 | 100% | T2 | 0% | 642,854 |
| aripiprazole 5 MG Oral Tablet aripiprazole | 5,067 | 100% | T2 | 13.3% | 613,179 |
| aripiprazole 2 MG Oral Film [Opipza] aripiprazole | 5,067 | 100% | T4 | 70% | 613,179 |
Source: CMS Quarterly Prescription Drug Plan Formulary PUF 2026. 6,046 drugs with RXCUI identifiers from NLM RxNorm. Coverage percentages based on 0 active Part D plans.