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
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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.