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
quinidine gluconate 324 MG Extended Release Oral Tablet quinidine gluconate	1,442	28.5%	T3	0%	484
lemborexant 5 MG Oral Tablet [Dayvigo] lemborexant	1,435	28.3%	T3	23.5%	11,530
lemborexant 10 MG Oral Tablet [Dayvigo] lemborexant	1,435	28.3%	T3	23.5%	11,530
etrasimod 2 MG Oral Tablet [Velsipity] etrasimod	1,434	28.3%	T4	95.9%	-
tafamidis 61 MG Oral Capsule [Vyndamax] tafamidis	1,432	28.3%	T4	97.6%	7,589
3 ML insulin lispro 25 UNT/ML / insulin lispro protamine, human 75 UNT/ML Pen Injector insulin lispro	1,432	28.3%	T2	0%	-
5 ML hydromorphone hydrochloride 10 MG/ML Injection hydromorphone hydrochloride	1,432	28.3%	T3	30.5%	-
erythromycin ethylsuccinate 40 MG/ML Oral Suspension erythromycin ethylsuccinate	1,426	28.1%	T3	0%	1,861
hydroxyurea 1000 MG Oral Tablet [Siklos] hydroxyurea	1,422	28.1%	T4	10.7%	102,368
tedizolid phosphate 200 MG Injection [Sivextro] tedizolid phosphate	1,419	28%	T5	27.9%	489
eslicarbazepine acetate 200 MG Oral Tablet [Aptiom] eslicarbazepine acetate	1,405	27.7%	T4	1.5%	8,348
eslicarbazepine acetate 400 MG Oral Tablet [Aptiom] eslicarbazepine acetate	1,405	27.7%	T4	1.5%	8,348
eslicarbazepine acetate 600 MG Oral Tablet [Aptiom] eslicarbazepine acetate	1,405	27.7%	T4	1.5%	8,348
eslicarbazepine acetate 800 MG Oral Tablet [Aptiom] eslicarbazepine acetate	1,405	27.7%	T4	1.5%	8,348
1 ML bimekizumab-bkzx 160 MG/ML Prefilled Syringe [Bimzelx] bimekizumab-bkzx	1,403	27.7%	T4	98.5%	13
1 ML bimekizumab-bkzx 160 MG/ML Auto-Injector [Bimzelx] bimekizumab-bkzx	1,403	27.7%	T4	98.5%	13
2 ML bimekizumab-bkzx 160 MG/ML Auto-Injector [Bimzelx] bimekizumab-bkzx	1,403	27.7%	T4	98.5%	13
2 ML bimekizumab-bkzx 160 MG/ML Prefilled Syringe [Bimzelx] bimekizumab-bkzx	1,403	27.7%	T4	98.5%	13
{28 (ivacaftor 75 MG / tezacaftor 50 MG Oral Tablet) / 28 (ivacaftor 75 MG Oral Tablet) } Pack [Symdeko (50 MG / 75 MG; 75 MG)] ivacaftor	1,402	27.7%	T4	98.7%	-
{28 (ivacaftor 150 MG / tezacaftor 100 MG Oral Tablet) / 28 (ivacaftor 150 MG Oral Tablet) } Pack [Symdeko (100 MG / 150 MG; 150 MG)] ivacaftor	1,402	27.7%	T4	98.7%	-
oxazepam 10 MG Oral Capsule oxazepam	1,395	27.5%	T3	41.8%	6,587
oxazepam 15 MG Oral Capsule oxazepam	1,395	27.5%	T3	41.8%	6,587
oxazepam 30 MG Oral Capsule oxazepam	1,395	27.5%	T3	41.8%	6,587
24 HR nisoldipine 8.5 MG Extended Release Oral Tablet nisoldipine	1,392	27.5%	T3	0%	-
24 HR nisoldipine 17 MG Extended Release Oral Tablet nisoldipine	1,392	27.5%	T3	0%	-
24 HR nisoldipine 34 MG Extended Release Oral Tablet nisoldipine	1,392	27.5%	T3	0%	-
{24 (drospirenone 3 MG / ethinyl estradiol 0.02 MG / levomefolate calcium 0.451 MG Oral Tablet) / 4 (levomefolate calcium 0.451 MG Oral Tablet) } Pack drospirenone	1,386	27.4%	T2	0%	-
metformin hydrochloride 100 MG/ML Oral Solution metformin hydrochloride	1,377	27.2%	T2	0%	5,918,026
24 HR nisoldipine 25.5 MG Extended Release Oral Tablet nisoldipine	1,375	27.1%	T3	0%	-
0.6 ML pegfilgrastim 10 MG/ML Prefilled Syringe [Neulasta] pegfilgrastim	1,370	27%	T5	88.6%	1,671
hydroxychloroquine sulfate 300 MG Oral Tablet hydroxychloroquine sulfate	1,364	26.9%	T2	0%	583,911
1 ML darbepoetin alfa 0.06 MG/ML Injection [Aranesp] darbepoetin alfa	1,364	26.9%	T3	96.6%	5,574
0.3 ML darbepoetin alfa 0.2 MG/ML Prefilled Syringe [Aranesp] darbepoetin alfa	1,364	26.9%	T4	96.6%	5,574
0.5 ML darbepoetin alfa 0.2 MG/ML Prefilled Syringe [Aranesp] darbepoetin alfa	1,364	26.9%	T4	96.6%	5,574
0.3 ML darbepoetin alfa 0.5 MG/ML Prefilled Syringe [Aranesp] darbepoetin alfa	1,364	26.9%	T4	96.6%	5,574
0.4 ML darbepoetin alfa 0.5 MG/ML Prefilled Syringe [Aranesp] darbepoetin alfa	1,364	26.9%	T4	96.6%	5,574
0.6 ML darbepoetin alfa 0.5 MG/ML Prefilled Syringe [Aranesp] darbepoetin alfa	1,364	26.9%	T4	96.6%	5,574
{21 (drospirenone 3 MG / ethinyl estradiol 0.03 MG / levomefolate calcium 0.451 MG Oral Tablet) / 7 (levomefolate calcium 0.451 MG Oral Tablet) } Pack [Tydemy 28 Day] drospirenone	1,363	26.9%	T2	0%	-
immunoglobulin G, human 5000 MG Injection [Gammagard] immunoglobulin G, human	1,361	26.9%	T4	98.7%	4,401
immunoglobulin G, human 10000 MG Injection [Gammagard] immunoglobulin G, human	1,361	26.9%	T4	98.7%	4,401
1 ML darbepoetin alfa 0.1 MG/ML Injection [Aranesp] darbepoetin alfa	1,358	26.8%	T4	96.5%	5,574
1 ML darbepoetin alfa 0.2 MG/ML Injection [Aranesp] darbepoetin alfa	1,358	26.8%	T4	96.5%	5,574
bimatoprost 0.3 MG/ML Ophthalmic Solution bimatoprost	1,354	26.7%	T2	0%	347,753
hydroxychloroquine sulfate 400 MG Oral Tablet hydroxychloroquine sulfate	1,351	26.7%	T2	0%	583,911
chlordiazepoxide hydrochloride 10 MG Oral Capsule chlordiazepoxide hydrochloride	1,351	26.7%	T2	8.7%	25,948
chlordiazepoxide hydrochloride 25 MG Oral Capsule chlordiazepoxide hydrochloride	1,351	26.7%	T2	8.7%	25,948
testosterone cypionate 100 MG/ML Injectable Solution [Depo-testosterone] testosterone cypionate	1,350	26.6%	T2	84%	242,810
chlordiazepoxide hydrochloride 5 MG Oral Capsule chlordiazepoxide hydrochloride	1,349	26.6%	T2	8.8%	25,948
1 ML denosumab-nxxp 60 MG/ML Prefilled Syringe [Bildyos] denosumab-nxxp	1,349	26.6%	T3	9.9%	-
12 HR cefaclor 500 MG Extended Release Oral Tablet cefaclor	1,343	26.5%	T3	0%	-
5 ML efgartigimod alfa-qvfc 200 MG/ML / hyaluronidase-qvfc 2000 UNT/ML Prefilled Syringe [Vyvgart Hytrulo] efgartigimod alfa-qvfc	1,342	26.5%	T4	97%	86
risperidone 25 MG Injection [Risperdal] risperidone	1,341	26.5%	T4	4.2%	478,904
risperidone 37.5 MG Injection [Risperdal] risperidone	1,341	26.5%	T5	4.2%	478,904
risperidone 50 MG Injection [Risperdal] risperidone	1,341	26.5%	T5	4.2%	478,904
risperidone 12.5 MG Injection [Risperdal] risperidone	1,341	26.5%	T4	4.2%	478,904
testosterone cypionate 200 MG/ML Injectable Solution [Depo-testosterone] testosterone cypionate	1,340	26.4%	T2	83.8%	242,810
alanine 8.8 MG/ML / arginine 4.89 MG/ML / calcium chloride 0.004 MEQ/ML / dibasic potassium phosphate 2.61 MG/ML / glucose 100 MG/ML / glycine 4.38 MG/ML / histidine 2.04 MG/ML / isoleucine 2.55 MG/ML / leucine 3.11 MG/ML / lysine 2.47 MG/ML / magnesium chloride 0.01 MEQ/ML / methionine 1.7 MG/ML / phenylalanine 2.38 MG/ML / proline 2.89 MG/ML / serine 2.13 MG/ML / sodium acetate trihydrate 2.97 MG/ML / sodium chloride 0.013 MEQ/ML / threonine 1.79 MG/ML / tryptophan 0.77 MG/ML / tyrosine 0.17 MG/ML / valine 2.47 MG/ML Injectable Solution [Clinimix E 4.25/10] alanine	1,334	26.3%	T4	90.2%	-
aspirin 325 MG / butalbital 50 MG / caffeine 40 MG Oral Capsule aspirin	1,333	26.3%	T3	27.2%	22,634
baclofen 15 MG Oral Tablet baclofen	1,326	26.2%	T2	0%	1,303,677
0.6 ML risperidone 150 MG/ML Prefilled Syringe [Perseris] risperidone	1,319	26%	T4	13.2%	2,832
0.8 ML risperidone 150 MG/ML Prefilled Syringe [Perseris] risperidone	1,319	26%	T4	13.2%	2,832
paromomycin 250 MG Oral Capsule [Humatin] paromomycin	1,318	26%	T5	0%	66
zolpidem tartrate 6.25 MG Extended Release Oral Tablet zolpidem tartrate	1,310	25.9%	T2	31%	1,435,449
zolpidem tartrate 12.5 MG Extended Release Oral Tablet zolpidem tartrate	1,310	25.9%	T2	31%	1,435,449
hydroxyurea 100 MG Oral Tablet [Siklos] hydroxyurea	1,307	25.8%	T3	11%	102,368
BX Rating 24 HR methylphenidate hydrochloride 27 MG Extended Release Oral Tablet BX Rating	1,302	25.7%	T3	2.2%	-
BX Rating 24 HR methylphenidate hydrochloride 54 MG Extended Release Oral Tablet BX Rating	1,302	25.7%	T3	2.2%	-
0.6 ML methylnaltrexone bromide 20 MG/ML Injection [Relistor] methylnaltrexone bromide	1,299	25.6%	T4	66.2%	-
BX Rating 24 HR methylphenidate hydrochloride 36 MG Extended Release Oral Tablet BX Rating	1,298	25.6%	T3	2.3%	-
0.6 ML methylnaltrexone bromide 20 MG/ML Prefilled Syringe [Relistor] methylnaltrexone bromide	1,292	25.5%	T4	66%	-
caplacizumab-yhdp 11 MG Injection [Cablivi] caplacizumab-yhdp	1,290	25.5%	T4	93.2%	48
Abuse-Deterrent 24 HR hydrocodone bitartrate 20 MG Extended Release Oral Tablet Abuse-Deterrent	1,287	25.4%	T3	92.1%	-
Abuse-Deterrent 24 HR hydrocodone bitartrate 30 MG Extended Release Oral Tablet Abuse-Deterrent	1,287	25.4%	T3	92.1%	-
Abuse-Deterrent 24 HR hydrocodone bitartrate 40 MG Extended Release Oral Tablet Abuse-Deterrent	1,287	25.4%	T3	92.1%	-
Abuse-Deterrent 24 HR hydrocodone bitartrate 60 MG Extended Release Oral Tablet Abuse-Deterrent	1,287	25.4%	T3	92.1%	-
Abuse-Deterrent 24 HR hydrocodone bitartrate 80 MG Extended Release Oral Tablet Abuse-Deterrent	1,287	25.4%	T3	92.1%	-
Abuse-Deterrent 24 HR hydrocodone bitartrate 100 MG Extended Release Oral Tablet Abuse-Deterrent	1,287	25.4%	T4	92.1%	-
Abuse-Deterrent 24 HR hydrocodone bitartrate 120 MG Extended Release Oral Tablet Abuse-Deterrent	1,287	25.4%	T4	92.1%	-
0.5 ML ustekinumab-ttwe 90 MG/ML Auto-Injector [Pyzchiva] ustekinumab-ttwe	1,285	25.4%	T3	100%	-
1 ML ustekinumab-ttwe 90 MG/ML Auto-Injector [Pyzchiva] ustekinumab-ttwe	1,285	25.4%	T4	100%	-
lonafarnib 50 MG Oral Capsule [Zokinvy] lonafarnib	1,281	25.3%	T5	100%	-
lonafarnib 75 MG Oral Capsule [Zokinvy] lonafarnib	1,281	25.3%	T5	100%	-
methyldopa 250 MG Oral Tablet methyldopa	1,274	25.1%	T3	10.9%	-
brimonidine tartrate 1 MG/ML Ophthalmic Solution [Alphagan] brimonidine tartrate	1,273	25.1%	T3	0%	573,214
leuprolide acetate 22.5 MG Injection [Lutrate] leuprolide acetate	1,273	25.1%	T3	97.5%	8,570
methyldopa 500 MG Oral Tablet methyldopa	1,272	25.1%	T3	11.1%	-
1 ML denosumab-dssb 60 MG/ML Prefilled Syringe [Ospomyv] denosumab-dssb	1,270	25.1%	T3	0%	-
formoterol fumarate 0.01 MG/ML Inhalation Solution formoterol fumarate	1,267	25%	T3	100%	3,044
cetirizine 2.4 MG/ML Ophthalmic Solution [Zerviate] cetirizine	1,261	24.9%	T3	0%	6,059
nitrofurantoin, macrocrystals 25 MG Oral Capsule nitrofurantoin, macrocrystals	1,253	24.7%	T2	0%	2,638,012
0.4 ML darbepoetin alfa 0.1 MG/ML Prefilled Syringe [Aranesp] darbepoetin alfa	1,249	24.6%	T3	100%	5,574
0.42 ML darbepoetin alfa 0.06 MG/ML Prefilled Syringe [Aranesp] darbepoetin alfa	1,249	24.6%	T3	100%	5,574
0.4 ML darbepoetin alfa 0.025 MG/ML Prefilled Syringe [Aranesp] darbepoetin alfa	1,249	24.6%	T3	100%	5,574
1 ML darbepoetin alfa 0.025 MG/ML Injection [Aranesp] darbepoetin alfa	1,243	24.5%	T3	100%	5,574
1 ML darbepoetin alfa 0.04 MG/ML Injection [Aranesp] darbepoetin alfa	1,243	24.5%	T3	100%	5,574
insulin degludec 100 UNT/ML Injectable Solution [Tresiba] insulin degludec	1,241	24.5%	T3	1.1%	258,451
3 ML insulin degludec 200 UNT/ML Pen Injector [Tresiba] insulin degludec	1,241	24.5%	T3	1.1%	10,460
3 ML insulin degludec 100 UNT/ML Pen Injector [Tresiba] insulin degludec	1,241	24.5%	T3	1.1%	10,460
24 HR donepezil hydrochloride 10 MG / memantine hydrochloride 14 MG Extended Release Oral Capsule [Namzaric] donepezil hydrochloride	1,240	24.5%	T3	6.9%	21,609
24 HR donepezil hydrochloride 10 MG / memantine hydrochloride 21 MG Extended Release Oral Capsule [Namzaric] donepezil hydrochloride	1,240	24.5%	T3	6.9%	21,609

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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