NDC product

NP Thyroid

NDC 17224-502 · Calvin Scott & Co Inc.

Key facts

Product NDC 17224-502
Proprietary name NP Thyroid
Nonproprietary name Thyroid tablets
Substances LIOTHYRONINE, LEVOTHYROXINE
Dosage form TABLET
Route ORAL
Labeler Calvin Scott & Co Inc.
Product type HUMAN OTC DRUG
Marketing category UNAPPROVED DRUG OTHER
Pharmacologic classes Thyroxine [CS], Triiodothyronine [CS], l-Thyroxine [EPC], l-Triiodothyronine [EPC]
Marketing start Aug 1, 2025
Listing certified through Dec 31, 2026

At a glance

  • 1–9 Package NDCs

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The National Drug Code (NDC) is the FDA's product identifier for drugs; the product NDC identifies the labeler and product, and each package adds a package code.

Source: U.S. Food and Drug Administration (FDA), National Drug Code Directory · Source date:

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