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.

Overview Browse Drugs Part D Plans Rankings

Drug Name	Plans Covering	Coverage %	Avg Tier	PA %	2023 Benes
fluoxetine 10 MG Oral Tablet fluoxetine	2,280	45%	T2	0%	1,427,221
acyclovir 0.05 MG/MG Topical Ointment acyclovir	2,276	44.9%	T3	25.5%	670,065
disopyramide 100 MG Oral Capsule disopyramide	2,276	44.9%	T3	13.7%	2,517
glucagon (rDNA) 1 MG Injection glucagon	2,272	44.8%	T3	0%	40,142
isradipine 2.5 MG Oral Capsule isradipine	2,271	44.8%	T3	0%	1,644
disopyramide 150 MG Oral Capsule disopyramide	2,270	44.8%	T3	13.8%	2,517
naloxone hydrochloride 16 MG/ML Nasal Spray [Rextovy] naloxone hydrochloride	2,263	44.7%	T3	0%	744,446
0.4 ML cyclosporine 0.5 MG/ML Ophthalmic Suspension cyclosporine	2,262	44.6%	T2	0%	-
isradipine 5 MG Oral Capsule isradipine	2,256	44.5%	T3	0%	1,644
butorphanol tartrate 1 MG/ACTUAT Metered Dose Nasal Spray butorphanol tartrate	2,254	44.5%	T3	0%	2,753
0.6 ML dasiglucagon 1 MG/ML Auto-Injector [Zegalogue] dasiglucagon	2,251	44.4%	T3	0%	-
0.6 ML dasiglucagon 1 MG/ML Prefilled Syringe [Zegalogue] dasiglucagon	2,251	44.4%	T3	0%	-
24 HR tramadol hydrochloride 100 MG Extended Release Oral Tablet tramadol hydrochloride	2,250	44.4%	T3	45.5%	-
24 HR tramadol hydrochloride 200 MG Extended Release Oral Tablet tramadol hydrochloride	2,250	44.4%	T3	45.5%	-
digoxin 0.0625 MG Oral Tablet digoxin	2,247	44.3%	T3	0%	392,747
valbenazine 60 MG Oral Capsule [Ingrezza] valbenazine	2,247	44.3%	T4	99.5%	29,191
valbenazine 80 MG Oral Capsule [Ingrezza] valbenazine	2,247	44.3%	T4	99.5%	29,191
valbenazine 40 MG Oral Capsule [Ingrezza] valbenazine	2,247	44.3%	T4	99.5%	29,191
ofloxacin 400 MG Oral Tablet ofloxacin	2,246	44.3%	T3	0%	1,021,068
24 HR tramadol hydrochloride 300 MG Extended Release Oral Tablet tramadol hydrochloride	2,246	44.3%	T3	46.7%	-
{56 (tolvaptan 15 MG Oral Tablet) } Pack tolvaptan	2,240	44.2%	T4	98.5%	-
{28 (tolvaptan 15 MG Oral Tablet) / 28 (tolvaptan 30 MG Oral Tablet) } Pack tolvaptan	2,240	44.2%	T4	98.5%	-
{28 (tolvaptan 15 MG Oral Tablet) / 28 (tolvaptan 45 MG Oral Tablet) } Pack tolvaptan	2,240	44.2%	T4	98.5%	-
{28 (tolvaptan 30 MG Oral Tablet) / 28 (tolvaptan 60 MG Oral Tablet) } Pack tolvaptan	2,240	44.2%	T4	98.5%	-
{28 (tolvaptan 30 MG Oral Tablet) / 28 (tolvaptan 90 MG Oral Tablet) } Pack tolvaptan	2,240	44.2%	T4	98.5%	-
fezolinetant 45 MG Oral Tablet [Veozah] fezolinetant	2,237	44.1%	T3	95.5%	2,837
triptorelin 3.75 MG Injection [Trelstar] triptorelin	2,223	43.9%	T3	78.5%	2,074
{24 (ethinyl estradiol 0.02 MG / norethindrone acetate 1 MG Chewable Tablet) / 4 (ferrous fumarate 75 MG Oral Tablet) } Pack [Finzala 24 Fe Chewable 28 Day] ethinyl estradiol	2,222	43.9%	T2	0%	-
brimonidine tartrate 1 MG/ML Ophthalmic Solution brimonidine tartrate	2,219	43.8%	T2	0%	573,214
{24 (ethinyl estradiol 0.025 MG / norethindrone 0.8 MG Chewable Tablet) / 4 (ferrous fumarate 75 MG Chewable Tablet) } Pack [Galbriela 28 Day] ethinyl estradiol	2,216	43.7%	T2	0%	-
1 ML denosumab 60 MG/ML Prefilled Syringe [Prolia] denosumab	2,215	43.7%	T3	17.9%	255,565
20 ML immunoglobulin G, human 50 MG/ML Injection [Octagam] immunoglobulin G, human	2,214	43.7%	T4	98.3%	2,511
{7 (valbenazine 40 MG Oral Capsule [Ingrezza]) / 21 (valbenazine 80 MG Oral Capsule [Ingrezza]) } Pack [Ingrezza] valbenazine	2,213	43.7%	T4	99.5%	29,191
estradiol cypionate 5 MG/ML Injectable Solution [Depo-estradiol] estradiol cypionate	2,206	43.5%	T4	0%	1,893
ofloxacin 300 MG Oral Tablet ofloxacin	2,201	43.4%	T3	0%	1,021,068
lisdexamfetamine dimesylate 10 MG Chewable Tablet lisdexamfetamine dimesylate	2,201	43.4%	T4	27.1%	57,529
lisdexamfetamine dimesylate 20 MG Chewable Tablet lisdexamfetamine dimesylate	2,201	43.4%	T4	27.1%	57,529
lisdexamfetamine dimesylate 30 MG Chewable Tablet lisdexamfetamine dimesylate	2,201	43.4%	T4	27.1%	57,529
lisdexamfetamine dimesylate 40 MG Chewable Tablet lisdexamfetamine dimesylate	2,201	43.4%	T4	27.1%	57,529
lisdexamfetamine dimesylate 50 MG Chewable Tablet lisdexamfetamine dimesylate	2,201	43.4%	T4	27.1%	57,529
lisdexamfetamine dimesylate 60 MG Chewable Tablet lisdexamfetamine dimesylate	2,201	43.4%	T4	27.1%	57,529
cimetidine 60 MG/ML Oral Solution cimetidine	2,201	43.4%	T2	0%	29,869
1.5 ML somatropin 3.3 MG/ML Cartridge [Omnitrope] somatropin	2,201	43.4%	T4	100%	702
apraclonidine 5 MG/ML Ophthalmic Solution apraclonidine	2,194	43.3%	T2	0%	1,543
temazepam 7.5 MG Oral Capsule temazepam	2,192	43.3%	T3	51.3%	394,771
1.5 ML somatropin 6.67 MG/ML Cartridge [Omnitrope] somatropin	2,186	43.1%	T4	100%	702
oxaprozin 600 MG Oral Tablet oxaprozin	2,183	43.1%	T3	0%	5,099
promethazine hydrochloride 12.5 MG Rectal Suppository promethazine hydrochloride	2,181	43%	T3	36.8%	523,738
doxycycline monohydrate 150 MG Oral Tablet doxycycline monohydrate	2,175	42.9%	T3	0%	1,315,899
{7 (lamotrigine 100 MG Oral Tablet) / 42 (lamotrigine 25 MG Oral Tablet) } Pack lamotrigine	2,173	42.9%	T3	0%	-
{35 (lamotrigine 25 MG Oral Tablet) } Pack lamotrigine	2,163	42.7%	T3	0%	-
benzoyl peroxide 0.05 MG/MG / clindamycin 0.01 MG/MG Topical Gel benzoyl peroxide	2,159	42.6%	T3	0%	465
2 ML penicillin G benzathine 300000 UNT/ML / penicillin G procaine 300000 UNT/ML Prefilled Syringe [Bicillin] penicillin G benzathine	2,158	42.6%	T3	1.9%	-
monomethyl fumarate 95 MG Delayed Release Oral Capsule [Bafiertam] monomethyl fumarate	2,152	42.5%	T4	95.2%	126
somatropin 5 MG/ML Injectable Solution [Omnitrope] somatropin	2,150	42.4%	T4	100%	1,572
phenytoin 50 MG Chewable Tablet [Dilantin] phenytoin	2,146	42.4%	T3	4.4%	14,557
0.6 ML pegfilgrastim-cbqv 10 MG/ML Prefilled Syringe [Udenyca] pegfilgrastim-cbqv	2,146	42.4%	T5	85.5%	533
{14 (lamotrigine 100 MG Oral Tablet) / 84 (lamotrigine 25 MG Oral Tablet) } Pack lamotrigine	2,144	42.3%	T3	0%	-
0.6 ML pegfilgrastim-cbqv 10 MG/ML Auto-Injector [Udenyca] pegfilgrastim-cbqv	2,142	42.3%	T5	85.4%	533
dextroamphetamine sulfate 15 MG Oral Tablet dextroamphetamine sulfate	2,141	42.3%	T3	0%	9,950
dextroamphetamine sulfate 20 MG Oral Tablet dextroamphetamine sulfate	2,141	42.3%	T3	0%	9,950
dextroamphetamine sulfate 30 MG Oral Tablet dextroamphetamine sulfate	2,141	42.3%	T3	0%	9,950
minocycline 100 MG Oral Tablet minocycline	2,140	42.2%	T3	0%	158,316
tazarotene 0.001 MG/MG Topical Gel tazarotene	2,139	42.2%	T3	79%	4,869
tazarotene 0.0005 MG/MG Topical Gel tazarotene	2,139	42.2%	T3	78.9%	4,869
tiotropium 0.018 MG Inhalation Powder [Spiriva] tiotropium	2,130	42%	T3	0%	333,929
lamotrigine 200 MG Disintegrating Oral Tablet lamotrigine	2,125	41.9%	T3	0%	611,083
{7 (ethinyl estradiol 0.01 MG Oral Tablet) / 42 (ethinyl estradiol 0.02 MG / levonorgestrel 0.15 MG Oral Tablet) / 21 (ethinyl estradiol 0.025 MG / levonorgestrel 0.15 MG Oral Tablet) / 21 (ethinyl estradiol 0.03 MG / levonorgestrel 0.15 MG Oral Tablet) } Pack [Rosyrah 91 Day] ethinyl estradiol	2,110	41.6%	T2	0%	-
dexlansoprazole 30 MG Delayed Release Oral Capsule dexlansoprazole	2,105	41.5%	T3	0%	178,875
dexlansoprazole 60 MG Delayed Release Oral Capsule dexlansoprazole	2,105	41.5%	T3	0%	178,875
triamterene 100 MG Oral Capsule triamterene	2,095	41.3%	T3	0%	2,495
triamterene 50 MG Oral Capsule triamterene	2,094	41.3%	T3	0%	2,495
0.8 ML adalimumab 100 MG/ML Auto-Injector [Humira] adalimumab	2,092	41.3%	T4	100%	4,742
0.8 ML adalimumab 50 MG/ML Auto-Injector [Humira] adalimumab	2,092	41.3%	T4	100%	4,742
{3 (0.8 ML adalimumab 100 MG/ML Auto-Injector [Humira]) } Pack [Humira Pen 80 MG/0.8 ML - Starter Package for Crohn's Disease, Ulcerative Colitis or Hidradenitis Suppurativa] adalimumab	2,090	41.2%	T4	100%	4,742
0.4 ML adalimumab 100 MG/ML Prefilled Syringe [Humira] adalimumab	2,090	41.2%	T4	100%	4,742
0.4 ML adalimumab 100 MG/ML Auto-Injector [Humira] adalimumab	2,090	41.2%	T4	100%	4,742
{2 (0.4 ML adalimumab 100 MG/ML Auto-Injector [Humira]) / 1 (0.8 ML adalimumab 100 MG/ML Auto-Injector [Humira]) } Pack [Humira Pen 80 MG/0.8 ML and 40 MG/0.4 ML - Psoriasis/Uveitis Starter Package] adalimumab	2,090	41.2%	T4	100%	4,742
0.8 ML adalimumab 50 MG/ML Prefilled Syringe [Humira] adalimumab	2,090	41.2%	T4	100%	4,742
baloxavir marboxil 80 MG Oral Tablet [Xofluza] baloxavir marboxil	2,087	41.2%	T3	0%	5,900
deucravacitinib 6 MG Oral Tablet [Sotyktu] deucravacitinib	2,084	41.1%	T4	100%	1,148
isotretinoin 25 MG Oral Capsule isotretinoin	2,081	41.1%	T4	64.8%	2,097
isotretinoin 35 MG Oral Capsule isotretinoin	2,081	41.1%	T4	64.8%	2,097
baloxavir marboxil 40 MG Oral Tablet [Xofluza] baloxavir marboxil	2,076	41%	T3	0%	5,900
24 HR ropinirole 2 MG Extended Release Oral Tablet ropinirole	2,075	41%	T3	0%	-
24 HR ropinirole 4 MG Extended Release Oral Tablet ropinirole	2,075	41%	T3	0%	-
2 ML penicillin G benzathine 450000 UNT/ML / penicillin G procaine 150000 UNT/ML Prefilled Syringe [Bicillin] penicillin G benzathine	2,066	40.8%	T3	3.8%	-
1.5 ML leuprolide acetate 15 MG/ML Prefilled Syringe [Lupron] leuprolide acetate	2,064	40.7%	T4	84.6%	-
levofloxacin 5 MG/ML Ophthalmic Solution levofloxacin	2,059	40.6%	T2	0%	1,827,884
methscopolamine bromide 2.5 MG Oral Tablet methscopolamine bromide	2,055	40.6%	T3	9.5%	1,596
leuprolide acetate 22.5 MG Injection leuprolide acetate	2,054	40.5%	T3	91.2%	8,570
methscopolamine bromide 5 MG Oral Tablet methscopolamine bromide	2,051	40.5%	T3	9.6%	1,596
mebendazole 100 MG Chewable Tablet [Emverm] mebendazole	2,047	40.4%	T4	1%	1,226
4-Month 1.5 ML leuprolide acetate 20 MG/ML Prefilled Syringe [Lupron]	2,043	40.3%	T4	85.2%	-
24 HR donepezil hydrochloride 10 MG / memantine hydrochloride 21 MG Extended Release Oral Capsule donepezil hydrochloride	2,043	40.3%	T3	27.3%	-
24 HR donepezil hydrochloride 10 MG / memantine hydrochloride 28 MG Extended Release Oral Capsule donepezil hydrochloride	2,043	40.3%	T3	27.3%	-
24 HR donepezil hydrochloride 10 MG / memantine hydrochloride 14 MG Extended Release Oral Capsule donepezil hydrochloride	2,043	40.3%	T3	27.3%	-
lamotrigine 50 MG Disintegrating Oral Tablet lamotrigine	2,038	40.2%	T3	0%	611,083
lamotrigine 100 MG Disintegrating Oral Tablet lamotrigine	2,038	40.2%	T3	0%	611,083
lamotrigine 25 MG Disintegrating Oral Tablet lamotrigine	2,036	40.2%	T3	0%	611,083

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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.

Compiled by Plainmedicare Editorial, Health Insurance Editorial Team