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
pimecrolimus 10 MG/ML Topical Cream pimecrolimus	4,800	94.7%	T3	37.5%	35,813
naratriptan 1 MG Oral Tablet naratriptan	4,800	94.7%	T2	0%	22,473
naratriptan 2.5 MG Oral Tablet naratriptan	4,800	94.7%	T2	0%	22,473
0.375 ML leuprolide acetate 120 MG/ML Prefilled Syringe [Eligard] leuprolide acetate	4,800	94.7%	T3	82.8%	2,942
tretinoin 0.0001 MG/MG Topical Gel tretinoin	4,799	94.7%	T3	91.4%	91,688
tretinoin 0.00025 MG/MG Topical Gel tretinoin	4,799	94.7%	T3	91.4%	91,688
levocarnitine 330 MG Oral Tablet levocarnitine	4,798	94.7%	T3	27.8%	5,259
betaine 1000 MG Powder for Oral Solution betaine	4,797	94.7%	T4	18.1%	89
albuterol 0.4 MG/ML Oral Solution albuterol	4,796	94.7%	T2	0%	1,487
sumatriptan 20 MG/ACTUAT Nasal Spray sumatriptan	4,795	94.6%	T3	0%	13,833
10 ML immunoglobulin G, human 100 MG/ML Injection [Gamunex] immunoglobulin G, human	4,795	94.6%	T4	99.3%	-
{21 (ethinyl estradiol 0.02 MG / levonorgestrel 0.1 MG Oral Tablet) / 7 (inert ingredients 1 MG Oral Tablet) } Pack [Vienva 28 Day] ethinyl estradiol	4,795	94.6%	T2	0%	-
sumatriptan 5 MG/ACTUAT Nasal Spray sumatriptan	4,791	94.6%	T3	0%	13,833
isotretinoin 30 MG Oral Capsule [Zenatane] isotretinoin	4,790	94.5%	T3	35.7%	2,097
isotretinoin 10 MG Oral Capsule [Zenatane] isotretinoin	4,790	94.5%	T3	35.7%	2,097
isotretinoin 20 MG Oral Capsule [Zenatane] isotretinoin	4,790	94.5%	T3	35.7%	2,097
isotretinoin 40 MG Oral Capsule [Zenatane] isotretinoin	4,790	94.5%	T3	35.7%	2,097
carbidopa 10 MG / levodopa 100 MG Disintegrating Oral Tablet carbidopa	4,789	94.5%	T2	0%	4,842
carbidopa 25 MG / levodopa 100 MG Disintegrating Oral Tablet carbidopa	4,789	94.5%	T3	0%	4,842
carbidopa 25 MG / levodopa 250 MG Disintegrating Oral Tablet carbidopa	4,789	94.5%	T3	0%	4,842
{84 (ethinyl estradiol 0.03 MG / levonorgestrel 0.15 MG Oral Tablet) / 7 (inert ingredients 1 MG Oral Tablet) } Pack ethinyl estradiol	4,789	94.5%	T2	0%	-
{21 (ethinyl estradiol 0.03 MG / norethindrone acetate 1.5 MG Oral Tablet) / 7 (ferrous fumarate 75 MG Oral Tablet) } Pack [Junel Fe 1.5/30 28 Day] ethinyl estradiol	4,787	94.5%	T2	0%	-
betaxolol 5 MG/ML Ophthalmic Solution betaxolol	4,786	94.5%	T2	0%	7,458
nitisinone 20 MG Oral Capsule nitisinone	4,785	94.4%	T4	68%	-
naproxen 375 MG Delayed Release Oral Tablet naproxen	4,783	94.4%	T2	0%	1,344,536
168 HR estradiol 0.00104 MG/HR Transdermal System estradiol	4,783	94.4%	T2	2.2%	-
168 HR estradiol 0.00208 MG/HR Transdermal System estradiol	4,783	94.4%	T2	2.2%	-
168 HR estradiol 0.00312 MG/HR Transdermal System estradiol	4,783	94.4%	T2	2.2%	-
168 HR estradiol 0.00417 MG/HR Transdermal System estradiol	4,783	94.4%	T2	2.2%	-
168 HR estradiol 0.00156 MG/HR Transdermal System estradiol	4,783	94.4%	T2	2.2%	-
168 HR estradiol 0.0025 MG/HR Transdermal System estradiol	4,783	94.4%	T2	2.2%	-
ezetimibe 10 MG / simvastatin 10 MG Oral Tablet ezetimibe	4,781	94.4%	T3	0%	1,921,217
ezetimibe 10 MG / simvastatin 20 MG Oral Tablet ezetimibe	4,781	94.4%	T3	0%	1,921,217
ezetimibe 10 MG / simvastatin 80 MG Oral Tablet ezetimibe	4,781	94.4%	T3	1%	1,921,217
ezetimibe 10 MG / simvastatin 40 MG Oral Tablet ezetimibe	4,781	94.4%	T3	0%	1,921,217
Microencapsulated potassium chloride 15 MEQ Extended Release Oral Tablet [Klor-Con] Microencapsulated potassium chloride	4,778	94.3%	T2	0%	24,541
{21 (desogestrel 0.15 MG / ethinyl estradiol 0.03 MG Oral Tablet) / 7 (inert ingredients 1 MG Oral Tablet) } Pack [Isibloom 28 Day] desogestrel	4,778	94.3%	T2	0%	-
500 ML glucose 100 MG/ML Injection glucose	4,776	94.3%	T3	15.6%	-
esomeprazole 20 MG Delayed Release Oral Capsule esomeprazole	4,775	94.2%	T2	0%	685,529
esomeprazole 40 MG Delayed Release Oral Capsule esomeprazole	4,775	94.2%	T2	0%	685,529
{21 (ethinyl estradiol 0.035 MG / norethindrone 1 MG Oral Tablet) / 7 (inert ingredients 1 MG Oral Tablet) } Pack [Alyacen 1/35] ethinyl estradiol	4,775	94.2%	T2	0%	-
{21 (desogestrel 0.15 MG / ethinyl estradiol 0.03 MG Oral Tablet) / 7 (inert ingredients 1 MG Oral Tablet) } Pack [Enskyce 28 Day] desogestrel	4,774	94.2%	T2	0%	-
{21 (ethinyl estradiol 0.03 MG / norgestrel 0.3 MG Oral Tablet) / 7 (inert ingredients 1 MG Oral Tablet) } Pack [Turqoz 28 Day] ethinyl estradiol	4,773	94.2%	T2	0%	-
{21 (ethinyl estradiol 0.02 MG / levonorgestrel 0.1 MG Oral Tablet) / 7 (inert ingredients 1 MG Oral Tablet) } Pack [Lessina 28 Day] ethinyl estradiol	4,772	94.2%	T2	0%	-
{28 (norethindrone 0.35 MG Oral Tablet) } Pack [Meleya 28 Day] norethindrone	4,772	94.2%	T2	0%	-
{28 (norethindrone 0.35 MG Oral Tablet) } Pack [Orquidea 28 Day] norethindrone	4,770	94.1%	T2	0%	-
20 ML potassium chloride 2 MEQ/ML Injection potassium chloride	4,769	94.1%	T3	2.4%	-
{21 (ethinyl estradiol 0.03 MG / norethindrone acetate 1.5 MG Oral Tablet) / 7 (ferrous fumarate 75 MG Oral Tablet) } Pack [Larin Fe 1.5/30] ethinyl estradiol	4,769	94.1%	T2	0%	-
1000 ML glucose 50 MG/ML / potassium chloride 0.01 MEQ/ML / sodium chloride 4.5 MG/ML Injection glucose	4,769	94.1%	T3	1.2%	-
levocarnitine 100 MG/ML Oral Solution levocarnitine	4,766	94.1%	T3	28.3%	5,259
isotretinoin 10 MG Oral Capsule isotretinoin	4,766	94.1%	T3	41.4%	2,097
21 DAY ethinyl estradiol 0.000625 MG/HR / etonogestrel 0.005 MG/HR Vaginal System [EluRyng]	4,766	94.1%	T2	0%	1,245
3 ML insulin, regular, human 500 UNT/ML Pen Injector [Humulin R] insulin, regular, human	4,765	94%	T3	1.3%	63,654
{21 (ethinyl estradiol 0.03 MG / norethindrone acetate 1.5 MG Oral Tablet) / 7 (ferrous fumarate 75 MG Oral Tablet) } Pack [Microgestin Fe 1.5/30 28 Day] ethinyl estradiol	4,765	94%	T2	0%	-
tolterodine tartrate 1 MG Oral Tablet tolterodine tartrate	4,764	94%	T3	0.7%	160,195
tolterodine tartrate 2 MG Oral Tablet tolterodine tartrate	4,764	94%	T3	0.7%	160,195
sodium phenylbutyrate 500 MG Oral Tablet sodium phenylbutyrate	4,763	94%	T4	79.4%	69
24 HR guanfacine 2 MG Extended Release Oral Tablet guanfacine	4,763	94%	T2	22.9%	-
24 HR guanfacine 1 MG Extended Release Oral Tablet guanfacine	4,763	94%	T2	22.9%	-
24 HR guanfacine 3 MG Extended Release Oral Tablet guanfacine	4,763	94%	T2	22.9%	-
24 HR guanfacine 4 MG Extended Release Oral Tablet guanfacine	4,763	94%	T2	22.9%	-
1000 ML glucose 50 MG/ML / potassium chloride 0.04 MEQ/ML / sodium chloride 4.5 MG/ML Injection glucose	4,763	94%	T3	1.2%	-
ibuprofen 20 MG/ML Oral Suspension ibuprofen	4,762	94%	T2	0%	3,444,665
ampicillin 1000 MG / sulbactam 500 MG Injection ampicillin	4,762	94%	T3	9.2%	3,864
prednisolone 5 MG/ML Oral Solution prednisolone	4,761	94%	T2	48.4%	20,337
1000 ML glucose 50 MG/ML / potassium chloride 0.03 MEQ/ML / sodium chloride 4.5 MG/ML Injection glucose	4,761	94%	T3	1.2%	-
levetiracetam 500 MG Oral Tablet [Roweepra] levetiracetam	4,760	93.9%	T2	0%	766,583
cysteamine 4.4 MG/ML Ophthalmic Solution [Cystaran] cysteamine	4,758	93.9%	T4	77.9%	30
clobetasol propionate 0.0005 MG/MG Topical Gel clobetasol propionate	4,756	93.9%	T3	0%	1,250,981
ondansetron 0.8 MG/ML Oral Solution ondansetron	4,754	93.8%	T3	86.4%	2,510,273
semaglutide 3 MG Oral Tablet [Rybelsus] semaglutide	4,753	93.8%	T3	99.4%	1,464,468
semaglutide 7 MG Oral Tablet [Rybelsus] semaglutide	4,753	93.8%	T3	99.4%	1,464,468
semaglutide 14 MG Oral Tablet [Rybelsus] semaglutide	4,753	93.8%	T3	99.4%	1,464,468
alanine 20.7 MG/ML / arginine 11.5 MG/ML / glycine 10.3 MG/ML / histidine 4.8 MG/ML / isoleucine 6 MG/ML / leucine 7.3 MG/ML / lysine 5.8 MG/ML / methionine 4 MG/ML / phenylalanine 5.6 MG/ML / proline 6.8 MG/ML / serine 5 MG/ML / threonine 4.2 MG/ML / tryptophan 1.8 MG/ML / tyrosine 0.4 MG/ML / valine 5.8 MG/ML Injectable Solution [Travasol 10] alanine	4,752	93.8%	T3	98.4%	-
{24 (drospirenone 3 MG / ethinyl estradiol 0.02 MG Oral Tablet) / 4 (inert ingredients 1 MG Oral Tablet) } Pack drospirenone	4,749	93.7%	T2	0%	-
500 ML glucose 50 MG/ML / sodium chloride 2 MG/ML Injection glucose	4,747	93.7%	T3	0.8%	-
{6 (ethinyl estradiol 0.03 MG / levonorgestrel 0.05 MG Oral Tablet) / 10 (ethinyl estradiol 0.03 MG / levonorgestrel 0.125 MG Oral Tablet) / 5 (ethinyl estradiol 0.04 MG / levonorgestrel 0.075 MG Oral Tablet) / 7 (inert ingredients 1 MG Oral Tablet) } Pack ethinyl estradiol	4,747	93.7%	T2	0%	-
quetiapine 150 MG Oral Tablet quetiapine	4,746	93.7%	T2	16.6%	1,335,528
hydroxyzine pamoate 25 MG Oral Capsule hydroxyzine pamoate	4,743	93.6%	T2	43.8%	419,149
hydroxyzine pamoate 50 MG Oral Capsule hydroxyzine pamoate	4,743	93.6%	T2	43.8%	419,149
isoniazid 10 MG/ML Oral Solution isoniazid	4,742	93.6%	T3	0%	11,875
{21 (desogestrel 0.15 MG / ethinyl estradiol 0.03 MG Oral Tablet) / 7 (inert ingredients 1 MG Oral Tablet) } Pack [Cyred 28 Day] desogestrel	4,742	93.6%	T2	0%	-
{21 (ethinyl estradiol 0.02 MG / levonorgestrel 0.1 MG Oral Tablet) / 7 (inert ingredients 1 MG Oral Tablet) } Pack [Falmina 28 Day] ethinyl estradiol	4,741	93.6%	T2	0%	-
{21 (ethinyl estradiol 0.035 MG / norethindrone 0.5 MG Oral Tablet) / 7 (inert ingredients 1 MG Oral Tablet) } Pack [Nortrel 0.5/35 28 Day] ethinyl estradiol	4,740	93.5%	T2	0%	-
lansoprazole 15 MG Delayed Release Oral Capsule lansoprazole	4,738	93.5%	T2	0%	303,222
lansoprazole 30 MG Delayed Release Oral Capsule lansoprazole	4,738	93.5%	T2	0%	303,222
flunisolide 0.025 MG/ACTUAT Metered Dose Nasal Spray flunisolide	4,736	93.5%	T2	0%	21,192
bempedoic acid 180 MG Oral Tablet [Nexletol] bempedoic acid	4,735	93.4%	T3	57.7%	18,619
{21 (desogestrel 0.15 MG / ethinyl estradiol 0.03 MG Oral Tablet) / 7 (inert ingredients 1 MG Oral Tablet) } Pack [Juleber 28 Day] desogestrel	4,735	93.4%	T2	0%	-
clotrimazole 10 MG/ML Topical Solution clotrimazole	4,731	93.4%	T2	0%	538,888
levothyroxine sodium 0.025 MG Oral Tablet [Levoxyl] levothyroxine sodium	4,729	93.3%	T2	0%	8,687,969
levothyroxine sodium 0.05 MG Oral Tablet [Levoxyl] levothyroxine sodium	4,729	93.3%	T2	0%	8,687,969
levothyroxine sodium 0.075 MG Oral Tablet [Levoxyl] levothyroxine sodium	4,729	93.3%	T2	0%	8,687,969
levothyroxine sodium 0.088 MG Oral Tablet [Levoxyl] levothyroxine sodium	4,729	93.3%	T2	0%	8,687,969
levothyroxine sodium 0.1 MG Oral Tablet [Levoxyl] levothyroxine sodium	4,729	93.3%	T2	0%	8,687,969
levothyroxine sodium 0.112 MG Oral Tablet [Levoxyl] levothyroxine sodium	4,729	93.3%	T2	0%	8,687,969
levothyroxine sodium 0.125 MG Oral Tablet [Levoxyl] levothyroxine sodium	4,729	93.3%	T2	0%	8,687,969
levothyroxine sodium 0.137 MG Oral Tablet [Levoxyl] levothyroxine sodium	4,729	93.3%	T2	0%	8,687,969
levothyroxine sodium 0.15 MG Oral Tablet [Levoxyl] levothyroxine sodium	4,729	93.3%	T2	0%	8,687,969
levothyroxine sodium 0.175 MG Oral Tablet [Levoxyl] levothyroxine sodium	4,729	93.3%	T2	0%	8,687,969

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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