The short version
Only one company currently supplies this market — there is no backup if it stumbles.
The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.
NP Thyroid
Thyroid tablets · LIOTHYRONINE 4.5 ug/1; LEVOTHYROXINE 19 ug/1 · Tablet · Oral · Calvin Scott & Co Inc.
NDC 17224-0502-28 · 28 TABLET in 1 BOTTLE · UNAPPROVED DRUG OTHER · View full market →
Medicare Part D
No Medicare Part D plan in CMS's quarterly files lists this product. That usually means it is discontinued, a repackager's listing, or a product no plan has added to its formulary.
How Part D pricing works →NADAC price per unit
No NADAC pricing on file for this NDC — NADAC covers drugs dispensed by retail community pharmacies.
Supply fragility
Not scored — fragility is computed for NADAC-priced NDCs.
90-day shortage risk (model v2)
0.1%chance of a new FDA shortage posting for thyroid (oral solid) in the next 90 days
sole-source market
For scale: the typical drug’s chance is about 0.1% — this one is in ordinary territory.
Backtested statistical model over the whole market, not this package alone. Model details →
Regulatory
- Application
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- TE code
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- Approval date
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- Patents / exclusivity
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Shortage history
No FDA shortage reports for this drug or its presentations.
Recalls (this NDC)
No enforcement reports list this package NDC.
Manufacturers of Thyroid tablets (Tablet)
| Labeler | Strength | First seen | Last seen |
|---|---|---|---|
| Calvin Scott & Co Inc. | LIOTHYRONINE 2.25 ug/1; LEVOTHYROXINE 9.5 ug/1 | Aug 26, 2026 | Sep 3, 2026 |
| Calvin Scott & Co Inc. | LIOTHYRONINE 9 ug/1; LEVOTHYROXINE 38 ug/1 | Aug 26, 2026 | Sep 3, 2026 |
| Calvin Scott & Co Inc. | LEVOTHYROXINE 57 ug/1; LIOTHYRONINE 13.5 ug/1 | Jul 15, 2026 | Sep 3, 2026 |
| Calvin Scott & Co Inc. | LIOTHYRONINE 4.5 ug/1; LEVOTHYROXINE 19 ug/1 | Aug 26, 2026 | Sep 3, 2026 |
| Calvin Scott & Co Inc. | LIOTHYRONINE 13.5 ug/1; LEVOTHYROXINE 57 ug/1 | Aug 26, 2026 | Sep 2, 2026 |
| Calvin Scott & Co Inc. | LEVOTHYROXINE 76 ug/1; LIOTHYRONINE 18 ug/1 | Jul 15, 2026 | Sep 2, 2026 |
| Calvin Scott & Co Inc. | LIOTHYRONINE 18 ug/1; LEVOTHYROXINE 76 ug/1 | Aug 26, 2026 | Aug 31, 2026 |
| Calvin Scott & Co Inc. | LEVOTHYROXINE 9.5 ug/1; LIOTHYRONINE 2.25 ug/1 | Jul 15, 2026 | Aug 30, 2026 |
| Calvin Scott & Co Inc. | LEVOTHYROXINE 38 ug/1; LIOTHYRONINE 9 ug/1 | Jul 15, 2026 | Aug 29, 2026 |
| Calvin Scott & Co Inc. | LIOTHYRONINE 9.5 ug/1; LEVOTHYROXINE 2.25 ug/1 | Jul 22, 2026 | Aug 22, 2026 |
| Calvin Scott & Co Inc. | LIOTHYRONINE 76 ug/1; LEVOTHYROXINE 18 ug/1 | Jul 22, 2026 | Aug 22, 2026 |
| Calvin Scott & Co Inc. | LIOTHYRONINE 38 ug/1; LEVOTHYROXINE 9 ug/1 | Jul 22, 2026 | Aug 20, 2026 |
| Calvin Scott & Co Inc. | LIOTHYRONINE 19 ug/1; LEVOTHYROXINE 4.5 ug/1 | Jul 22, 2026 | Aug 19, 2026 |
| Calvin Scott & Co Inc. | LIOTHYRONINE 57 ug/1; LEVOTHYROXINE 13.5 ug/1 | Jul 22, 2026 | Aug 19, 2026 |
| Calvin Scott & Co Inc. | LEVOTHYROXINE 19 ug/1; LIOTHYRONINE 4.5 ug/1 | Jul 15, 2026 | Jul 16, 2026 |
Roster from daily NDC Directory diffs — first/last seen dates start July 2026.
Cite this page
DrugDashboards, "NP Thyroid — NDC 17224-0502-28," retrieved September 3, 2026, https://drugdashboards.com/drug/17224050228.
Free to cite with attribution — see how the data is put together.