PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SYNTHROID TABLETSLevothyroxine Sodium Tablets

Boots Pharmaceuticals Inc · NSN 6505-00-990-2021 · FSC 6505 · No Item Name Available
Verified by PartsTable
NSN 6505-00-990-2021 — this item is cataloged by the U.S. Government under National Stock Number 6505-00-990-2021. Primary manufacturer part number: SYNTHROID TABLETS.
Features
  • Levothyroxine Sodium Tablets — FSC 6505
  • Active Medicament Medicinal Strength: 0.025 MILLIGRAMS LEVOTHYROXINE SODIUM ACTIVE INGREDIENT
  • Medical Designation and Grade: UNITED STATES PHARMACOPEIA
  • Primary Container Type: BOTTLE
  • Primary Container Content Quantity: 100.000 TABLETS
  • 7 verified cross-references
  • Primary manufacturer: Boots Pharmaceuticals Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Levothyroxine Sodium Tablets, cataloged under National Stock Number 6505-00-990-2021, is classified within Federal Supply Class 6505 (No Item Name Available) of the Medical, Dental, and Veterinary Equipment group. The primary manufacturer of record is Boots Pharmaceuticals Inc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6505-00-990-2021
Primary Part NumberSYNTHROID TABLETS
Item NameLevothyroxine Sodium Tablets
FSC / FSG6505 / 65 — No Item Name Available
ManufacturerBoots Pharmaceuticals Inc
StatusCANCELLED
Active Medicament Medicinal Strength0.025 MILLIGRAMS LEVOTHYROXINE SODIUM ACTIVE INGREDIENT
Medical Designation and GradeUNITED STATES PHARMACOPEIA
Primary Container TypeBOTTLE
Primary Container Content Quantity100.000 TABLETS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6505-00-915-1630NDC00048-1140-03 INTERCHANGEABLE
Levothyroxine Sodium Tablets
Abbott Laboratories Inc. Div Hospital Products Division
6505-01-042-9260NDC00074-6624-19 INTERCHANGEABLE
Levothyroxine Sodium Tablets
Abbvie Us Llc
6505-01-094-1636NDC00048-1040-05 INTERCHANGEABLE
Levothyroxine Sodium Tablets
Baxter Healthcare Corp IV Systems/gov Sales
6505-01-099-9794NDC00074-4341-19 INTERCHANGEABLE
Levothyroxine Sodium Tablets
Abbvie Inc
6505-01-153-3338NDC00378-1815-10 INTERCHANGEABLE
Levothyroxine Sodium Tablets
Mylan Pharmaceuticals Inc
6505-01-153-4435NDC69238-1839-01 INTERCHANGEABLE
Levothyroxine Sodium Tablets
Amneal Pharmaceuticals of New York, Llc
6505-01-178-3941NDC00048-1090-13 INTERCHANGEABLE
Levothyroxine Sodium Tablets
Baxter Healthcare Corp IV Systems/gov Sales
6505-01-212-77183P1095 INTERCHANGEABLE
Levothyroxine Sodium Tablets
Baxter Healthcare Corp IV Systems/gov Sales
6505-01-290-8735NDC00074-4552-19 INTERCHANGEABLE
Levothyroxine Sodium Tablets
Abbvie Us Llc
6505-01-323-4605NDC00074-7068-19 INTERCHANGEABLE
Levothyroxine Sodium Tablets
Abbvie Us Llc
Cross-Reference Index
Part NumberManufacturer
SYNTHROID TABLETS Boots Pharmaceuticals Inc (USA)
LEVOTHROID TABLETS Armour Pharmaceutical Co Div of Rorer-Poulec Rorer Inc (USA)
SYNTHROID Boots Pharmaceuticals Inc (USA)
NDC00048-1020-03 Boots Pharmaceuticals Inc (USA)
LEVOTHROID Armour Pharmaceutical Co Div of Rorer-Poulec Rorer Inc (USA)
NDC00053-2540-06 Armour Pharmaceutical Co Div of Rorer-Poulec Rorer Inc (USA)
3P1023 Boots Pharmaceuticals Inc (USA)
Related Parts
6505-00-915-1630INTERCHANGEABLE
LEVOTHYROXINE SODIUM TABLETS
NDC00048-1140-03
6505-01-042-9260INTERCHANGEABLE
LEVOTHYROXINE SODIUM TABLETS
NDC00074-6624-19
6505-01-094-1636INTERCHANGEABLE
LEVOTHYROXINE SODIUM TABLETS
NDC00048-1040-05
6505-01-099-9794INTERCHANGEABLE
LEVOTHYROXINE SODIUM TABLETS
NDC00074-4341-19
6505-01-153-3338INTERCHANGEABLE
LEVOTHYROXINE SODIUM TABLETS
NDC00378-1815-10
6505-01-153-4435INTERCHANGEABLE
LEVOTHYROXINE SODIUM TABLETS
NDC69238-1839-01
6505-01-178-3941INTERCHANGEABLE
LEVOTHYROXINE SODIUM TABLETS
NDC00048-1090-13
6505-01-212-7718INTERCHANGEABLE
LEVOTHYROXINE SODIUM TABLETS
3P1095
6505-01-290-8735INTERCHANGEABLE
LEVOTHYROXINE SODIUM TABLETS
NDC00074-4552-19
6505-01-323-4605INTERCHANGEABLE
LEVOTHYROXINE SODIUM TABLETS
NDC00074-7068-19
6505-01-351-0918INTERCHANGEABLE
LEVOTHYROXINE SODIUM TABLETS
NDC00048-1020-03
6505-01-366-0962INTERCHANGEABLE
LEVOTHYROXINE SODIUM TABLETS
NDC00074-5182-19

Frequently Asked Questions

What is NSN 6505-00-990-2021?

NSN 6505-00-990-2021 is a Levothyroxine Sodium Tablets, manufactured by Boots Pharmaceuticals Inc, classified under FSC 6505 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6505-00-990-2021?

NSN 6505-00-990-2021 has 7 cross-referenced part numbers: SYNTHROID TABLETS (Boots Pharmaceuticals Inc), LEVOTHROID TABLETS (Armour Pharmaceutical Co Div of Rorer-Poulec Rorer Inc), SYNTHROID (Boots Pharmaceuticals Inc), NDC00048-1020-03 (Boots Pharmaceuticals Inc), LEVOTHROID (Armour Pharmaceutical Co Div of Rorer-Poulec Rorer Inc) and 2 more.

What NSN replaces 6505-00-990-2021?

There are 12 known substitutes for 6505-00-990-2021: 6505-00-915-1630, 6505-01-042-9260, 6505-01-094-1636 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SYNTHROID TABLETS?

Key specifications for SYNTHROID TABLETS: Active Medicament Medicinal Strength: 0.025 MILLIGRAMS LEVOTHYROXINE SODIUM ACTIVE INGREDIENT; Medical Designation and Grade: UNITED STATES PHARMACOPEIA; Primary Container Type: BOTTLE; Primary Container Content Quantity: 100.000 TABLETS. 4 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6505-00-990-2021 still in active supply?

NSN 6505-00-990-2021 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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