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
insulin, regular, human 100 UNT/ML Injectable Solution [Humulin R] insulin, regular, human	2,033	40.1%	T3	3.4%	418,431
insulin isophane, human 100 UNT/ML Injectable Suspension [Humulin N] insulin isophane, human	2,033	40.1%	T3	0.6%	418,431
insulin isophane, human 70 UNT/ML / insulin, regular, human 30 UNT/ML Injectable Suspension [Humulin] insulin isophane, human	2,033	40.1%	T3	0.6%	418,431
sofosbuvir 400 MG / velpatasvir 100 MG Oral Tablet sofosbuvir	2,031	40.1%	T4	99.3%	18
3 ML insulin isophane, human 100 UNT/ML Pen Injector [Humulin N] insulin isophane, human	2,027	40%	T3	0.6%	87,919
3 ML insulin isophane, human 70 UNT/ML / insulin, regular, human 30 UNT/ML Pen Injector [Humulin] insulin isophane, human	2,027	40%	T3	0.6%	-
citric acid 68.6 MG/ML / magnesium oxide 20 MG/ML / picosulfate sodium 0.0571 MG/ML Oral Solution [Clenpiq] citric acid	2,026	40%	T3	0%	573
atropine sulfate 0.005 MG/ML / diphenoxylate hydrochloride 0.5 MG/ML Oral Solution atropine sulfate	2,015	39.8%	T3	16.3%	109,532
miglitol 25 MG Oral Tablet miglitol	2,011	39.7%	T3	0%	432
miglitol 50 MG Oral Tablet miglitol	2,011	39.7%	T3	0%	432
miglitol 100 MG Oral Tablet miglitol	2,011	39.7%	T3	0%	432
{35 (lamotrigine 25 MG Oral Tablet [Subvenite]) } Pack [Subvenite Blue (for Patients Taking Valproate)] lamotrigine	2,011	39.7%	T3	0%	260
{7 (lamotrigine 100 MG Oral Tablet [Subvenite]) / 42 (lamotrigine 25 MG Oral Tablet [Subvenite]) } Pack [Subvenite Orange (for Patients Not Taking Carbamazepine, Phenytoin, Phenobarbital, Primidone, or Valproate)] lamotrigine	2,009	39.6%	T3	0%	260
cyproheptadine hydrochloride 0.4 MG/ML Oral Solution cyproheptadine hydrochloride	2,008	39.6%	T2	60.7%	66,484
50 ML oxacillin 40 MG/ML Injection oxacillin	1,998	39.4%	T3	30.8%	-
fenofibrate 130 MG Oral Capsule fenofibrate	1,990	39.3%	T2	0%	500,170
{14 (lamotrigine 100 MG Oral Tablet [Subvenite]) / 84 (lamotrigine 25 MG Oral Tablet [Subvenite]) } Pack [Subvenite Green (for Patients Taking Carbamazepine, Phenytoin, Phenobarbital, or Primidone and Not Taking Valproate)] lamotrigine	1,984	39.2%	T3	0%	260
{24 (ethinyl estradiol 0.02 MG / norethindrone acetate 1 MG Chewable Tablet) / 4 (ferrous fumarate 75 MG Oral Tablet) } Pack [Mibelas 24 Fe Chewable 28 Day] ethinyl estradiol	1,974	39%	T2	0%	-
3 ML insulin lispro 100 UNT/ML Cartridge [Humalog] insulin lispro	1,969	38.9%	T3	0.6%	156,031
24 HR ropinirole 8 MG Extended Release Oral Tablet ropinirole	1,969	38.9%	T3	0%	-
24 HR ropinirole 6 MG Extended Release Oral Tablet ropinirole	1,969	38.9%	T3	0%	-
24 HR ropinirole 12 MG Extended Release Oral Tablet ropinirole	1,969	38.9%	T3	0%	-
3 ML insulin lispro 100 UNT/ML Pen Injector [Humalog] insulin lispro	1,967	38.8%	T3	0.6%	156,031
1.5 ML leuprolide acetate 30 MG/ML Prefilled Syringe [Lupron] leuprolide acetate	1,960	38.7%	T4	86.9%	-
24 HR donepezil hydrochloride 10 MG / memantine hydrochloride 7 MG Extended Release Oral Capsule [Namzaric] donepezil hydrochloride	1,959	38.7%	T3	3.5%	21,609
{2 (magnesium sulfate 900 MG / polyethylene glycol 3350 179000 MG / potassium chloride 1120 MG / sodium chloride 500 MG / sodium sulfate 7300 MG Powder for Oral Solution) } Pack [Suflave] magnesium sulfate	1,957	38.6%	T3	0%	3,461
24 HR dexmethylphenidate hydrochloride 10 MG Extended Release Oral Capsule dexmethylphenidate hydrochloride	1,946	38.4%	T3	1.8%	-
roflumilast 1.5 MG/ML Topical Cream [Zoryve] roflumilast	1,944	38.4%	T4	100%	59,491
deferasirox 90 MG Oral Granules deferasirox	1,944	38.4%	T4	94.6%	3,436
deferasirox 180 MG Oral Granules deferasirox	1,944	38.4%	T4	94.6%	3,436
deferasirox 360 MG Oral Granules deferasirox	1,944	38.4%	T4	94.6%	3,436
avacopan 10 MG Oral Capsule [Tavneos] avacopan	1,944	38.4%	T4	98.4%	420
24 HR dexmethylphenidate hydrochloride 20 MG Extended Release Oral Capsule dexmethylphenidate hydrochloride	1,942	38.3%	T3	1.8%	-
24 HR dexmethylphenidate hydrochloride 15 MG Extended Release Oral Capsule dexmethylphenidate hydrochloride	1,942	38.3%	T3	1.8%	-
24 HR dexmethylphenidate hydrochloride 25 MG Extended Release Oral Capsule dexmethylphenidate hydrochloride	1,942	38.3%	T3	1.8%	-
24 HR dexmethylphenidate hydrochloride 30 MG Extended Release Oral Capsule dexmethylphenidate hydrochloride	1,942	38.3%	T3	1.8%	-
24 HR dexmethylphenidate hydrochloride 40 MG Extended Release Oral Capsule dexmethylphenidate hydrochloride	1,942	38.3%	T3	1.8%	-
24 HR dexmethylphenidate hydrochloride 35 MG Extended Release Oral Capsule dexmethylphenidate hydrochloride	1,942	38.3%	T3	1.8%	-
bromfenac 0.9 MG/ML Ophthalmic Solution bromfenac	1,935	38.2%	T3	0%	144,112
24 HR dexmethylphenidate hydrochloride 5 MG Extended Release Oral Capsule dexmethylphenidate hydrochloride	1,933	38.1%	T3	1.9%	-
mercaptopurine 20 MG/ML Oral Suspension [Purixan] mercaptopurine	1,922	37.9%	T5	28.1%	10,603
acetaminophen 20 MG/ML / hydrocodone bitartrate 0.667 MG/ML Oral Solution acetaminophen	1,921	37.9%	T2	0%	156
abiraterone acetate 125 MG Oral Tablet [Yonsa] abiraterone acetate	1,913	37.8%	T4	98.4%	45,661
72 HR fentanyl 0.0375 MG/HR Transdermal System fentanyl	1,888	37.3%	T3	79%	-
desoximetasone 0.0025 MG/MG Topical Ointment desoximetasone	1,884	37.2%	T3	0%	27,754
12 HR treprostinil 0.125 MG Extended Release Oral Tablet [Orenitram] treprostinil	1,884	37.2%	T4	100%	-
12 HR treprostinil 0.25 MG Extended Release Oral Tablet [Orenitram] treprostinil	1,884	37.2%	T5	100%	-
12 HR treprostinil 1 MG Extended Release Oral Tablet [Orenitram] treprostinil	1,884	37.2%	T5	100%	-
12 HR treprostinil 2.5 MG Extended Release Oral Tablet [Orenitram] treprostinil	1,884	37.2%	T5	100%	-
12 HR treprostinil 5 MG Extended Release Oral Tablet [Orenitram] treprostinil	1,884	37.2%	T5	100%	-
insulin lispro 100 UNT/ML Injectable Solution [Humalog] insulin lispro	1,877	37%	T3	4.3%	418,431
mesalamine 500 MG Extended Release Oral Capsule mesalamine	1,870	36.9%	T3	0.7%	95,185
0.5 UNT Doses 3 ML insulin lispro 100 UNT/ML Pen Injector [Humalog] Doses	1,863	36.8%	T3	0.6%	156,031
loteprednol etabonate 5 MG/ML / tobramycin 3 MG/ML Ophthalmic Suspension [Zylet] loteprednol etabonate	1,863	36.8%	T3	0%	91,483
3 ML insulin lispro 200 UNT/ML Pen Injector [Humalog] insulin lispro	1,860	36.7%	T3	0.6%	156,031
72 HR fentanyl 0.0625 MG/HR Transdermal System fentanyl	1,860	36.7%	T3	80%	-
insulin lispro 25 UNT/ML / insulin lispro protamine, human 75 UNT/ML Injectable Suspension [Humalog Mix] insulin lispro	1,859	36.7%	T3	0.6%	418,431
bosentan 32 MG Tablet for Oral Suspension bosentan	1,852	36.6%	T4	98.3%	715
3 ML insulin lispro 25 UNT/ML / insulin lispro protamine, human 75 UNT/ML Pen Injector [Humalog Mix] insulin lispro	1,852	36.6%	T3	0.6%	-
cefaclor 50 MG/ML Oral Suspension cefaclor	1,850	36.5%	T3	0%	5,291
3 ML insulin lispro 50 UNT/ML / insulin lispro protamine, human 50 UNT/ML Pen Injector [Humalog Mix] insulin lispro	1,849	36.5%	T3	0.6%	-
0.8 ML adalimumab-adbm 50 MG/ML Auto-Injector adalimumab-adbm	1,844	36.4%	T5	90.9%	-
0.4 ML adalimumab-adbm 50 MG/ML Prefilled Syringe adalimumab-adbm	1,844	36.4%	T5	90.9%	-
0.2 ML adalimumab-adbm 50 MG/ML Prefilled Syringe adalimumab-adbm	1,844	36.4%	T5	90.9%	-
0.4 ML adalimumab-adbm 100 MG/ML Prefilled Syringe adalimumab-adbm	1,843	36.4%	T5	93%	-
0.4 ML adalimumab-adbm 100 MG/ML Auto-Injector adalimumab-adbm	1,843	36.4%	T5	93%	-
0.8 ML adalimumab-adbm 50 MG/ML Prefilled Syringe adalimumab-adbm	1,843	36.4%	T5	90.7%	-
200 ML immunoglobulin G, human 100 MG/ML Injection [Privigen] immunoglobulin G, human	1,835	36.2%	T4	100%	3,071
120 ACTUAT formoterol fumarate 0.0048 MG/ACTUAT / glycopyrrolate 0.009 MG/ACTUAT Metered Dose Inhaler [Bevespi]	1,832	36.2%	T3	0%	-
{14 (estrogens, conjugated (USP) 0.625 MG / medroxyprogesterone acetate 5 MG Oral Tablet) / 14 (estrogens, conjugated (USP) 0.625 MG Oral Tablet) } Pack [Premphase 28 Day] estrogens,	1,826	36%	T3	17.3%	-
eliglustat 84 MG Oral Capsule [Cerdelga] eliglustat	1,821	35.9%	T4	96.9%	119
chlorzoxazone 500 MG Oral Tablet chlorzoxazone	1,820	35.9%	T2	52.8%	18,123
72 HR fentanyl 0.0875 MG/HR Transdermal System fentanyl	1,805	35.6%	T3	79.1%	-
Sprinkle valbenazine 40 MG Oral Capsule [Ingrezza] Sprinkle valbenazine	1,801	35.5%	T4	100%	29,191
Sprinkle valbenazine 60 MG Oral Capsule [Ingrezza] Sprinkle valbenazine	1,801	35.5%	T4	100%	29,191
Sprinkle valbenazine 80 MG Oral Capsule [Ingrezza] Sprinkle valbenazine	1,801	35.5%	T4	100%	29,191
Preservative-Free dorzolamide 20 MG/ML / timolol 5 MG/ML Ophthalmic Solution Preservative-Free dorzolamide	1,801	35.5%	T3	0%	-
fluoxetine 60 MG Oral Tablet fluoxetine	1,797	35.5%	T2	0%	1,427,221
mesalamine 800 MG Delayed Release Oral Tablet mesalamine	1,795	35.4%	T3	0%	95,185
prednisolone 4 MG/ML Oral Solution prednisolone	1,791	35.3%	T2	22.2%	20,337
120 ACTUAT budesonide 0.16 MG/ACTUAT / formoterol fumarate 0.0045 MG/ACTUAT Metered Dose Inhaler [Symbicort]	1,779	35.1%	T3	0%	984,400
120 ACTUAT budesonide 0.08 MG/ACTUAT / formoterol fumarate 0.0045 MG/ACTUAT Metered Dose Inhaler [Symbicort]	1,779	35.1%	T3	0%	984,400
diclofenac sodium 50 MG / misoprostol 0.2 MG Delayed Release Oral Tablet diclofenac sodium	1,766	34.9%	T3	0%	3,196,668
0.5 ML paliperidone palmitate 156 MG/ML Prefilled Syringe [Erzofri] paliperidone palmitate	1,765	34.8%	T4	14%	-
0.75 ML paliperidone palmitate 156 MG/ML Prefilled Syringe [Erzofri] paliperidone palmitate	1,765	34.8%	T4	14%	-
1 ML paliperidone palmitate 156 MG/ML Prefilled Syringe [Erzofri] paliperidone palmitate	1,765	34.8%	T4	14%	-
1.5 ML paliperidone palmitate 156 MG/ML Prefilled Syringe [Erzofri] paliperidone palmitate	1,765	34.8%	T4	14%	-
2.25 ML paliperidone palmitate 156 MG/ML Prefilled Syringe [Erzofri] paliperidone palmitate	1,765	34.8%	T4	13.3%	-
diclofenac sodium 75 MG / misoprostol 0.2 MG Delayed Release Oral Tablet diclofenac sodium	1,760	34.7%	T3	0%	3,196,668
mafenide 85 MG/ML Topical Cream [Sulfamylon] mafenide	1,756	34.7%	T3	0%	268
tafamidis meglumine 20 MG Oral Capsule [Vyndaqel] tafamidis meglumine	1,749	34.5%	T4	98.5%	660
10 ML immunoglobulin G, human 100 MG/ML Injection [Gammaked] immunoglobulin G, human	1,747	34.5%	T4	98%	1,549
olopatadine hydrochloride 0.665 MG/ACTUAT Metered Dose Nasal Spray olopatadine hydrochloride	1,733	34.2%	T3	0%	147,406
patiromer 8400 MG Powder for Oral Suspension [Veltassa] patiromer	1,733	34.2%	T3	19.4%	43,162
patiromer 16800 MG Powder for Oral Suspension [Veltassa] patiromer	1,733	34.2%	T3	19.4%	43,162
1 ML ustekinumab-stba 90 MG/ML Prefilled Syringe [Steqeyma] ustekinumab-stba	1,729	34.1%	T4	100%	-
1.7 ML denosumab 70 MG/ML Injection [Xgeva] denosumab	1,728	34.1%	T4	98.9%	2,900
sapropterin dihydrochloride 100 MG Oral Tablet [Javygtor] sapropterin dihydrochloride	1,727	34.1%	T4	99.3%	137
25 ML immunoglobulin G, human 100 MG/ML Injection [Gammagard] immunoglobulin G, human	1,727	34.1%	T4	98.9%	-
patiromer 25200 MG Powder for Oral Suspension [Veltassa] patiromer	1,726	34.1%	T3	19.5%	43,162

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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