Levothyroxine (Levoxyl, Synthroid, Thyquidity) — 2026 Medicare Part D coverage
levothyroxine — sold as Levoxyl, Synthroid, Thyquidity, Tirosint, Unithroid: 90 forms appear in Medicare Part D formularies for 2026. This page reports what plans filed with CMS; it does not recommend a plan.
Which plans in your county cover levothyroxine?
Pick a county to see every Medicare Advantage plan filed there and every stand-alone Part D plan in its region, with this drug's tier, restrictions and tier cost sharing.
How to read drug coverage
Tier is the cost-sharing tier the plan assigned the drug in its CMS formulary filing; lower tiers usually cost less. PA = prior authorization, ST = step therapy (try another drug first), QL = quantity limit. Not on formulary means the plan did not list this exact form; the plan may cover another strength or a formulary exception may be possible. Cost sharing is the plan's initial-coverage amount for the tier as filed with CMS; the deductible, the $2,100 annual out-of-pocket cap, the $35 insulin cap and negotiated prices for selected drugs can change what you actually pay. Formularies change during the year; the plan's formulary document and Medicare.gov govern.
What the star rating under each Medicare Advantage plan means
What the star rating means. CMS rates every Medicare Advantage contract (the "H" number in the plan ID — all plans under it share the rating) on a 1-to-5 scale each October, from about 40 measures of care quality, member experience, complaints and appeals, customer service and, for plans with drug coverage, drug safety and pricing. The 2026 rating is largely based on performance measured in 2024.
5 Excellent4 Above average3 Average2 Below average1 Poor
Not rated means CMS published no overall rating — usually a contract too new to be measured or with too few members ("not enough data"); it is not a low score. A 5-star contract can be joined outside the normal enrollment windows (the 5-star Special Enrollment Period, Dec 8 – Nov 30). Medicare.gov flags contracts rated below 3 stars for three years running as low-performing. Stars describe the contract's past performance as CMS measured it; they are not a recommendation, and they do not tell you whether a plan's network, drugs or costs fit you.
Forms and strengths in 2026 formularies
| Form | Formularies listing it | Most common tier | PA | ST | QL |
|---|---|---|---|---|---|
| levothyroxine sodium 100 MCG Oral Tablet generic · RxCUI 892246 | 328 (100%) | 1 | 0 | 0 | 0 |
| levothyroxine sodium 112 MCG Oral Tablet generic · RxCUI 966248 | 328 (100%) | 1 | 0 | 0 | 0 |
| levothyroxine sodium 125 MCG Oral Tablet generic · RxCUI 966224 | 328 (100%) | 1 | 0 | 0 | 0 |
| levothyroxine sodium 137 MCG Oral Tablet generic · RxCUI 966270 | 328 (100%) | 1 | 0 | 0 | 0 |
| levothyroxine sodium 150 MCG Oral Tablet generic · RxCUI 966225 | 328 (100%) | 1 | 0 | 0 | 0 |
| levothyroxine sodium 175 MCG Oral Tablet generic · RxCUI 966249 | 328 (100%) | 1 | 0 | 0 | 0 |
| levothyroxine sodium 200 MCG Oral Tablet generic · RxCUI 892251 | 328 (100%) | 1 | 0 | 0 | 0 |
| levothyroxine sodium 25 MCG Oral Tablet generic · RxCUI 966220 | 328 (100%) | 1 | 0 | 0 | 0 |
| levothyroxine sodium 300 MCG Oral Tablet generic · RxCUI 892255 | 328 (100%) | 1 | 0 | 0 | 0 |
| levothyroxine sodium 50 MCG Oral Tablet generic · RxCUI 966221 | 328 (100%) | 1 | 0 | 0 | 0 |
| levothyroxine sodium 75 MCG Oral Tablet generic · RxCUI 966222 | 328 (100%) | 1 | 0 | 0 | 0 |
| levothyroxine sodium 88 MCG Oral Tablet generic · RxCUI 966253 | 328 (100%) | 1 | 0 | 0 | 0 |
| LEVOXYL 100 MCG Oral Tablet brand · RxCUI 966283 | 268 (82%) | 1 | 0 | 0 | 0 |
| LEVOXYL 112 MCG Oral Tablet brand · RxCUI 966184 | 268 (82%) | 1 | 0 | 0 | 0 |
| LEVOXYL 125 MCG Oral Tablet brand · RxCUI 966190 | 268 (82%) | 1 | 0 | 0 | 0 |
| LEVOXYL 137 MCG Oral Tablet brand · RxCUI 966194 | 268 (82%) | 1 | 0 | 0 | 0 |
| LEVOXYL 150 MCG Oral Tablet brand · RxCUI 966200 | 268 (82%) | 1 | 0 | 0 | 0 |
| LEVOXYL 175 MCG Oral Tablet brand · RxCUI 966204 | 268 (82%) | 1 | 0 | 0 | 0 |
| LEVOXYL 200 MCG Oral Tablet brand · RxCUI 966211 | 268 (82%) | 1 | 0 | 0 | 0 |
| LEVOXYL 25 MCG Oral Tablet brand · RxCUI 966157 | 268 (82%) | 1 | 0 | 0 | 0 |
| LEVOXYL 50 MCG Oral Tablet brand · RxCUI 966164 | 268 (82%) | 1 | 0 | 0 | 0 |
| LEVOXYL 75 MCG Oral Tablet brand · RxCUI 966170 | 268 (82%) | 1 | 0 | 0 | 0 |
| LEVOXYL 88 MCG Oral Tablet brand · RxCUI 966175 | 268 (82%) | 1 | 0 | 0 | 0 |
| SYNTHROID 100 MCG Oral Tablet brand · RxCUI 966250 | 246 (75%) | 3 | 0 | 0 | 0 |
| SYNTHROID 112 MCG Oral Tablet brand · RxCUI 966185 | 246 (75%) | 3 | 0 | 0 | 0 |
| SYNTHROID 125 MCG Oral Tablet brand · RxCUI 966191 | 246 (75%) | 3 | 0 | 0 | 0 |
| SYNTHROID 137 MCG Oral Tablet brand · RxCUI 966271 | 246 (75%) | 3 | 0 | 0 | 0 |
| SYNTHROID 150 MCG Oral Tablet brand · RxCUI 966201 | 246 (75%) | 3 | 0 | 0 | 0 |
| SYNTHROID 175 MCG Oral Tablet brand · RxCUI 966205 | 246 (75%) | 3 | 0 | 0 | 0 |
| SYNTHROID 200 MCG Oral Tablet brand · RxCUI 966251 | 246 (75%) | 3 | 0 | 0 | 0 |
| SYNTHROID 25 MCG Oral Tablet brand · RxCUI 966158 | 246 (75%) | 3 | 0 | 0 | 0 |
| SYNTHROID 50 MCG Oral Tablet brand · RxCUI 966247 | 246 (75%) | 3 | 0 | 0 | 0 |
| SYNTHROID 75 MCG Oral Tablet brand · RxCUI 966171 | 246 (75%) | 3 | 0 | 0 | 0 |
| SYNTHROID 88 MCG Oral Tablet brand · RxCUI 966282 | 246 (75%) | 3 | 0 | 0 | 0 |
| SYNTHROID 300 MCG Oral Tablet brand · RxCUI 966218 | 245 (75%) | 3 | 0 | 0 | 0 |
| UNITHROID 100 MCG Oral Tablet brand · RxCUI 966233 | 226 (69%) | 1 | 0 | 0 | 0 |
| UNITHROID 112 MCG Oral Tablet brand · RxCUI 966235 | 226 (69%) | 1 | 0 | 0 | 0 |
| UNITHROID 125 MCG Oral Tablet brand · RxCUI 966237 | 226 (69%) | 1 | 0 | 0 | 0 |
| UNITHROID 137 MCG Oral Tablet brand · RxCUI 966436 | 226 (69%) | 1 | 0 | 0 | 0 |
| UNITHROID 150 MCG Oral Tablet brand · RxCUI 966238 | 226 (69%) | 1 | 0 | 0 | 0 |
| UNITHROID 175 MCG Oral Tablet brand · RxCUI 966246 | 226 (69%) | 1 | 0 | 0 | 0 |
| UNITHROID 200 MCG Oral Tablet brand · RxCUI 966241 | 226 (69%) | 1 | 0 | 0 | 0 |
| UNITHROID 25 MCG Oral Tablet brand · RxCUI 966228 | 226 (69%) | 1 | 0 | 0 | 0 |
| UNITHROID 300 MCG Oral Tablet brand · RxCUI 966243 | 226 (69%) | 1 | 0 | 0 | 0 |
| UNITHROID 50 MCG Oral Tablet brand · RxCUI 966244 | 226 (69%) | 1 | 0 | 0 | 0 |
| UNITHROID 75 MCG Oral Tablet brand · RxCUI 966286 | 226 (69%) | 1 | 0 | 0 | 0 |
| UNITHROID 88 MCG Oral Tablet brand · RxCUI 966232 | 226 (69%) | 1 | 0 | 0 | 0 |
| TIROSINT - SOL 100 MCG in 1 mL Oral Solution brand · RxCUI 2056482 | 9 (3%) | 4 | 1 | 0 | 1 |
| TIROSINT - SOL 112 MCG in 1 mL Oral Solution brand · RxCUI 2056486 | 9 (3%) | 4 | 1 | 0 | 1 |
| TIROSINT - SOL 125 MCG in 1 mL Oral Solution brand · RxCUI 2056490 | 9 (3%) | 4 | 1 | 0 | 1 |
| TIROSINT - SOL 13 MCG in 1 mL Oral Solution brand · RxCUI 2056494 | 9 (3%) | 4 | 1 | 0 | 1 |
| TIROSINT - SOL 137 MCG in 1 mL Oral Solution brand · RxCUI 2056498 | 9 (3%) | 4 | 1 | 0 | 1 |
| TIROSINT - SOL 150 MCG in 1 mL Oral Solution brand · RxCUI 2056502 | 9 (3%) | 4 | 1 | 0 | 1 |
| TIROSINT - SOL 175 MCG in 1 mL Oral Solution brand · RxCUI 2056506 | 9 (3%) | 4 | 1 | 0 | 1 |
| TIROSINT - SOL 200 MCG in 1 mL Oral Solution brand · RxCUI 2056510 | 9 (3%) | 4 | 1 | 0 | 1 |
| TIROSINT - SOL 25 MCG in 1 mL Oral Solution brand · RxCUI 2056466 | 9 (3%) | 4 | 1 | 0 | 1 |
| TIROSINT - SOL 37.5 MCG in 1 mL Oral Solution brand · RxCUI 2566615 | 9 (3%) | 4 | 1 | 0 | 1 |
| TIROSINT - SOL 44 MCG in 1 mL Oral Solution brand · RxCUI 2566619 | 9 (3%) | 4 | 1 | 0 | 1 |
| TIROSINT - SOL 50 MCG in 1 mL Oral Solution brand · RxCUI 2056470 | 9 (3%) | 4 | 1 | 0 | 1 |
| TIROSINT - SOL 62.5 MCG in 1 mL Oral Solution brand · RxCUI 2566610 | 9 (3%) | 4 | 1 | 0 | 1 |
| TIROSINT - SOL 75 MCG in 1 mL Oral Solution brand · RxCUI 2056474 | 9 (3%) | 4 | 1 | 0 | 1 |
| TIROSINT - SOL 88 MCG in 1 mL Oral Solution brand · RxCUI 2056478 | 9 (3%) | 4 | 1 | 0 | 1 |
| Tirosint 100 MCG Oral Capsule brand · RxCUI 966415 | 5 (2%) | 4 | 0 | 0 | 1 |
| Tirosint 112 MCG Oral Capsule brand · RxCUI 905453 | 5 (2%) | 4 | 0 | 0 | 1 |
| Tirosint 125 MCG Oral Capsule brand · RxCUI 966417 | 5 (2%) | 4 | 0 | 0 | 1 |
| Tirosint 13 MCG Oral Capsule brand · RxCUI 966434 | 5 (2%) | 4 | 0 | 0 | 1 |
| Tirosint 137 MCG Oral Capsule brand · RxCUI 905457 | 5 (2%) | 4 | 0 | 0 | 1 |
| Tirosint 150 MCG Oral Capsule brand · RxCUI 966420 | 5 (2%) | 4 | 0 | 0 | 1 |
| Tirosint 175 MCG Oral Capsule brand · RxCUI 1923049 | 5 (2%) | 4 | 0 | 0 | 1 |
| Tirosint 200 MCG Oral Capsule brand · RxCUI 1923052 | 5 (2%) | 4 | 0 | 0 | 1 |
| Tirosint 25 MCG Oral Capsule brand · RxCUI 966423 | 5 (2%) | 4 | 0 | 0 | 1 |
| Tirosint 37.5 MCG Oral Capsule brand · RxCUI 2630740 | 5 (2%) | 4 | 0 | 0 | 1 |
| Tirosint 44 MCG Oral Capsule brand · RxCUI 2630744 | 5 (2%) | 4 | 0 | 0 | 1 |
| Tirosint 50 MCG Oral Capsule brand · RxCUI 966426 | 5 (2%) | 4 | 0 | 0 | 1 |
| Tirosint 62.5 MCG Oral Capsule brand · RxCUI 2630748 | 5 (2%) | 4 | 0 | 0 | 1 |
| Tirosint 75 MCG Oral Capsule brand · RxCUI 905460 | 5 (2%) | 4 | 0 | 0 | 1 |
| Tirosint 88 MCG Oral Capsule brand · RxCUI 905464 | 5 (2%) | 4 | 0 | 0 | 1 |
| levothyroxine sodium 100 MCG Oral Capsule generic · RxCUI 966404 | 4 (1%) | 4 | 0 | 0 | 0 |
| levothyroxine sodium 125 MCG Oral Capsule generic · RxCUI 966405 | 4 (1%) | 4 | 0 | 0 | 0 |
| levothyroxine sodium 150 MCG Oral Capsule generic · RxCUI 966413 | 4 (1%) | 4 | 0 | 0 | 0 |
| levothyroxine sodium 175 MCG Oral Capsule generic · RxCUI 1923047 | 4 (1%) | 4 | 0 | 0 | 0 |
| levothyroxine sodium 200 MCG Oral Capsule generic · RxCUI 1923050 | 4 (1%) | 4 | 0 | 0 | 0 |
| levothyroxine sodium 25 MCG Oral Capsule generic · RxCUI 966406 | 4 (1%) | 4 | 0 | 0 | 0 |
| levothyroxine sodium 50 MCG Oral Capsule generic · RxCUI 966407 | 4 (1%) | 4 | 0 | 0 | 0 |
| levothyroxine sodium 75 MCG Oral Capsule generic · RxCUI 905458 | 4 (1%) | 4 | 0 | 0 | 0 |
| levothyroxine sodium 88 MCG Oral Capsule generic · RxCUI 905462 | 4 (1%) | 4 | 0 | 0 | 0 |
| levothyroxine sodium 112 MCG Oral Capsule generic · RxCUI 905451 | 3 (1%) | 4 | 0 | 0 | 0 |
| levothyroxine sodium 13 MCG Oral Capsule generic · RxCUI 966412 | 3 (1%) | 4 | 0 | 0 | 0 |
| levothyroxine sodium 137 MCG Oral Capsule generic · RxCUI 905455 | 3 (1%) | 4 | 0 | 0 | 0 |
| Thyquidity 100 MCG in 5 mL Oral Solution brand · RxCUI 2473282 | 1 (0%) | 2 | 0 | 0 | 0 |
Counts are formularies (of 328) in the CMS file that list the form, and how many of those apply prior authorization (PA), step therapy (ST) or a quantity limit (QL). Many plans share one formulary, so plan counts in a county will differ.
How to read drug coverage
Tier is the cost-sharing tier the plan assigned the drug in its CMS formulary filing; lower tiers usually cost less. PA = prior authorization, ST = step therapy (try another drug first), QL = quantity limit. Not on formulary means the plan did not list this exact form; the plan may cover another strength or a formulary exception may be possible. Cost sharing is the plan's initial-coverage amount for the tier as filed with CMS; the deductible, the $2,100 annual out-of-pocket cap, the $35 insulin cap and negotiated prices for selected drugs can change what you actually pay. Formularies change during the year; the plan's formulary document and Medicare.gov govern.
What the star rating under each Medicare Advantage plan means
What the star rating means. CMS rates every Medicare Advantage contract (the "H" number in the plan ID — all plans under it share the rating) on a 1-to-5 scale each October, from about 40 measures of care quality, member experience, complaints and appeals, customer service and, for plans with drug coverage, drug safety and pricing. The 2026 rating is largely based on performance measured in 2024.
5 Excellent4 Above average3 Average2 Below average1 Poor
Not rated means CMS published no overall rating — usually a contract too new to be measured or with too few members ("not enough data"); it is not a low score. A 5-star contract can be joined outside the normal enrollment windows (the 5-star Special Enrollment Period, Dec 8 – Nov 30). Medicare.gov flags contracts rated below 3 stars for three years running as low-performing. Stars describe the contract's past performance as CMS measured it; they are not a recommendation, and they do not tell you whether a plan's network, drugs or costs fit you.