Independent register of U.S. FDA drug recalls · updated Oct 10, 2026
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Class II · Moderate risk Terminated Initiated Apr 22, 2014 (12 years ago)

Liothyronine Sodium Tablets

Class II — Moderate risk. May cause temporary or reversible harm; serious harm unlikely.

Why it was recalled

Cross Contamination with Other Products: Four lots of Liothyronine Sodium Tablets, USP 5 mcg are being recalled due to the finding of a potential carryover of trace amounts of a previously manufactured product.

Cause type: Cross-contamination

Traces of another drug - most often penicillin - got into the product from shared equipment or facilities. Even trace penicillin can trigger a severe allergic reaction in someone who was never meant to receive it. All cross-contamination recalls.

What was recalled

Liothyronine Sodium Tablets, USP 5 mcg, Rx Only, a) 100-count bottle NDC 42794-018-02 and b) 1000-count bottle NDC 42794-018-06, SigmaPharm Laboratories, LLC, Bensalem, Pa.

Affected NDCs 42794-0018-02 42794-0018-06

Compare with the code on your package — it is the most precise check available.

Drug: Liothyronine Category: Thyroid Medication

Product details

From the FDA NDC directory, for the product code this recall names. Compare with the label on your package.

ProductStrengthForm & routeLabelerType
Liothyronine Sodium
NDC 42794-0018
5 ug/1 Tablet
Oral
Sigmapharm Laboratories, LLC Rx
Recalling firm
SigmaPharm Laboratories LLC
NDC code
42794-018-02
Origin
PA, United States
Initiated by
Voluntary: Firm initiated
FDA recall number
D-1344-2014 · FDA notice

Check, then ask. Class II means harm is possible but usually temporary or reversible. Find the lot number on your package; if it matches, ask your pharmacist about a replacement. Do not simply stop a prescribed medication on your own - the gap can be riskier than the recall. This recall is now terminated, which means the firm has finished removing the affected product; anything on pharmacy shelves today should be unaffected.

Other Liothyronine recalls

See all
Class II · Moderate risk

Nature-Throid 1 GR

CGMP deviations; repackaged product was recalled by the manufacturer because it was manufactured under the same conditions as products found to be sub-potent.

Terminated cGMP deviation PD-Rx Pharmaceuticals, Inc. NDC 43063-819-01 D-0005-2021

Other recalls by SigmaPharm Laboratories LLC

All 2014 recalls
Class II · Moderate risk

Sodium Phenylbutyrate Powder

Failed Impurities/Degradation Specifications; Out of Specification impurity results obtained during routine testing.

Terminated Impurity / degradation SigmaPharm Laboratories LLC NDC 42794-086-14 D-0898-2021
Class II · Moderate risk

Sodium Phenylbutyrate POWDER

Failed Impurities Specifications: Out of Specification impurity results obtained during routine testing.

Terminated Impurity / degradation SigmaPharm Laboratories LLC NDC 42794-086-14 D-0766-2021
Class III · Low risk

Asenapine Sublingual Tablets

Incorrect Product Formulation; product was manufactured with the incorrect Art Cherry Flavor flavoring agent instead of Art Black Cherry Flavor flavoring agent

Terminated Other SigmaPharm Laboratories LLC NDC 42794-017-10 D-0380-2021
Class III · Low risk

Asenapine Sublingual Tablets

Incorrect Product Formulation; product was manufactured with the incorrect Art Cherry Flavor flavoring agent instead of Art Black Cherry Flavor flavoring agent

Terminated Other SigmaPharm Laboratories LLC NDC 42794-016-10 D-0379-2021