Storage and handling
STORAGE: Store at controlled room temperature between 15° - 30°C (59° - 86°F). Keep container tightly closed when not in use. USE ONLY AS DIRECTED
STORAGE: Store at controlled room temperature between 15° - 30°C (59° - 86°F). Keep container tightly closed when not in use. USE ONLY AS DIRECTED
A palatable supplement for the correction of conditions associated with hypothyroidism in horses and ponies
WARNING: Federal law restricts this drug to use by or on the order of a licensed veterinarian
Not for Use in Humans • Keep Out of Reach of Children
For use in horses and ponies for correction of conditions associated with low circulating thyroid hormone (hypothyrodism).
Doses should be individualized and animals should be monitored daily for clinical signs of hyperthyroidism or hypersensitivity. Suggested initial doses are 1-10 mg levothyroxine sodium (T4)/100 lb body weight (2-20 mg/100 kg) once per day or in divided doses. Response to the administration of Thyrocryn™ Powder should be evaluated clinically every week until an adequate maintenance dose is established. In most horses, this is usually in the range of 35 to 100 mg total daily dose of T4 (1-3 level tablespoonfuls Thyrocryn™ Powder ).
Each pound (453.6 g) contains:
Levothyroxine Sodium USP ........................................ 0.22% (1.0 g)
One level teaspoonful contains 12 mg of T4: one level tablespoonful contains 36 mg of T4.
Administer with caution to animals with clincially significant heart disease, hypertension or other complications for which a sharply increased metabolic rate might prove hazardous. Use in pregnant mares has not been evaluated.
STORAGE: Store at controlled room temperature between 15° - 30°C (59° - 86°F). Keep container tightly closed when not in use.
USE ONLY AS DIRECTED
Net Contents:
1 lb (453.6 grams), P0172.FP
10 lb (4.5 kg), P0173.FP
| RxCUI | RxNorm string | TTY | SPL version |
|---|---|---|---|
| 1423483 | levothyroxine sodium 1 GM in 453.6 GM Oral Powder | PSN | 1 |
| 2675685 | THYROCRYN 1 GM in 453.6 GM Oral Powder | PSN | 1 |
| 2675685 | levothyroxine sodium 0.0022 MG/MG Oral Powder [Thyrocryn] | SBD | 1 |
| 1423483 | levothyroxine sodium 0.0022 MG/MG Oral Powder | SCD | 1 |
| 1423483 | levothyroxine sodium 0.22 % Oral Powder | SY | 1 |
| 2675685 | Thyrocryn 0.0022 MG/MG Oral Powder | SY | 1 |
| 2675685 | Thyrocryn 0.22 % Oral Powder | SY | 1 |
| Class | Version | Type | Effective |
|---|---|---|---|
| LEVOTHYROXINE Pharmacologic Class Indexing | 2 | Indexing - Pharmacologic Class | 20180813 |
| Product concept | Relation | Version | Effective |
|---|---|---|---|
| 97c252d3-9bb8-4530-bb44-9824dc7cf556 | Product name | 6 | 20250729 |
| 6c43b71c-35e6-4db3-ba24-c6ef42ff7003 | Product name | 3 | 20240207 |
| 890fd4bf-1a80-42b7-be1b-2d0259d5f0c8 | Product name | 5 | 20240207 |
| c8ad26bf-af73-460b-b74e-1eff16cc4f9f | Product name | 5 | 20240207 |
| 01383843-4069-43cf-aa76-dc17a6f9f8c4 | Product name | 2 | 20230123 |
| 978cca7d-a938-4791-8322-da48d90a63ef | Product name | 1 | 20230113 |
| 65f86ba3-8816-4e12-899b-18290c8de551 | Product name | 2 | 20210614 |
| f16ab90f-08c2-40be-a543-66d9827cd1f3 | Product name | 1 | 20210601 |
| 6a33ec05-2ae2-45e5-ab82-2d94b3303923 | Product name | 1 | 20190709 |
| 93355a10-1c44-4c92-a11d-7d995e0200d9 | Product name | 1 | 20190219 |
| Package NDC | Product | Description | Form | Quantity | Strength | SPL version |
|---|---|---|---|---|---|---|
| 46066-174-20 | THYROCRYN | 453.6 g in 1 JAR | POWDER | 453.6 | 1 | |
| 46066-174-20 | THYROCRYN | 12 in 1 CASE | POWDER | 12 | 1 | |
| 46066-174-22 | THYROCRYN | 4500 g in 1 PAIL | POWDER | 4500 | 1 |
Every source-derived product name is available through these pages.
| Product NDC | Package NDC |
|---|---|
| 46066-174 | 46066-174-20, 46066-174-22 |
Every source-derived ingredient row is available through these pages.
| Name | UNII | Kind |
|---|---|---|
| LEVOTHYROXINE SODIUM | 9J765S329G | ACTIR |
OpenFDA label data provides additional search and identifier links. DailyMed’s Structured Product Label is the canonical label on FDA.report. Matching records are deduplicated before they are shown below.
| Brand | Generic | Manufacturer | SPL set ID | Effective date | Available safety fields | Join |
|---|---|---|---|---|---|---|
| Levothyroxine sodium | LEVOTHYROXINE SODIUM | REMEDYREPACK INC. | bc9385d0-5c67-4bde-94da-e621347e2cba | 2026-09-10 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| Levothyroxine sodium | LEVOTHYROXINE SODIUM | REMEDYREPACK INC. | 4c903249-69e9-4168-a9d1-22e6c2c1eb22 | 2026-09-10 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| Levothyroxine sodium | LEVOTHYROXINE SODIUM | REMEDYREPACK INC. | 6f25cbb3-0358-4778-b8f0-f76479a2dcc5 | 2026-09-10 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| Levothyroxine sodium | LEVOTHYROXINE SODIUM | REMEDYREPACK INC. | 7fd988be-ab3d-406d-a55d-1e5a8a2101cc | 2026-09-10 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| Levothyroxine sodium | LEVOTHYROXINE SODIUM | REMEDYREPACK INC. | 6108759a-783e-42ca-b078-6a3cd84ce901 | 2026-09-10 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| Levothyroxine Sodium | LEVOTHYROXINE SODIUM | REMEDYREPACK INC. | 13e03769-9a4f-497f-9afa-95bf525090b3 | 2026-09-09 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| LEVOTHYROXINE SODIUM | LEVOTHYROXINE SODIUM | NorthStar RxLLC | 58f4dc90-3648-49dc-a7e1-baf918a773b5 | 2026-08-20 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| Levothyroxine Sodium | LEVOTHYROXINE SODIUM | NuCare Pharmaceuticals, Inc. | 597ea445-d926-adc6-e063-6394a90a6446 | 2026-08-20 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| Levothyroxine Sodium | LEVOTHYROXINE SODIUM | Coupler LLC | 55f4c679-86cb-b97f-e063-6294a90ad5ef | 2026-07-06 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| Levothyroxine Sodium | LEVOTHYROXINE SODIUM | Coupler LLC | 55f67831-4680-edbf-e063-6294a90a1d36 | 2026-07-06 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| Levothyroxine Sodium | LEVOTHYROXINE SODIUM | Bryant Ranch Prepack | 489ffba8-983e-478f-8f62-fe08bf3d0e0b | 2026-06-23 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| Levothyroxine Sodium | LEVOTHYROXINE SODIUM | Coupler LLC | 544d67eb-8487-cb5d-e063-6394a90a3110 | 2026-06-15 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| levothyroxine sodium | LEVOTHYROXINE SODIUM | Bryant Ranch Prepack | 3b282e57-1009-4d2c-8ca2-9cca9f791937 | 2026-06-12 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| Levothyroxine Sodium | LEVOTHYROXINE SODIUM | Coupler LLC | 53e84179-fe2a-5696-e063-6394a90a8566 | 2026-06-10 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| LEVOTHYROXINE SODIUM | LEVOTHYROXINE SODIUM | Coupler LLC | 5383a4d8-319a-5bf6-e063-6294a90a5497 | 2026-06-05 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| Levothyroxine Sodium | LEVOTHYROXINE SODIUM | NCS HealthCare of KY, LLC dba Vangard Labs | abe173cc-1579-43a5-b12d-a31958d0a539 | 2026-06-04 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| Levothyroxine Sodium | LEVOTHYROXINE SODIUM | Cardinal Health 107, LLC | 66a3bd4a-770b-4f67-bfa7-6d5e23f2ecbf | 2026-06-04 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| Levothyroxine Sodium | LEVOTHYROXINE SODIUM | Coupler LLC | 53316e75-9897-4935-e063-6294a90a94cf | 2026-06-01 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| Levothyroxine Sodium | LEVOTHYROXINE SODIUM | Bryant Ranch Prepack | 5852d874-1ebc-49ff-b6c2-1dd513fca784 | 2026-05-27 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
| Levothyroxine Sodium | LEVOTHYROXINE SODIUM | A-S Medication Solutions | c8ae9dc4-836f-4912-80d7-684fd374f40a | 2026-05-27 | Boxed warning, Warnings, Adverse reactions | LEVOTHYROXINE SODIUM |
Adverse event summaries are temporarily unavailable. Other product information remains available.