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Limited official informationFDA Drug Enforcement ReportsRecall date: May 27, 2026

Primidone Tablets, USP, 50 mg, 50-count bottle, RX only, Manufactured by: Lannett Company, Inc., Marketed by: GSMS, Incorporated, Camaril...

Full official product description

Primidone Tablets, USP, 50 mg, 50-count bottle, RX only, Manufactured by: Lannett Company, Inc., Marketed by: GSMS, Incorporated, Camarillo, CA 93012. NDC 51407-637-05 | Primidone Tablets, USP, 250 mg, 100-count bottle, RX only, Manufactured by: Lannett Company, Inc., Marketed by: GSMS, Incorporated, Camarillo, CA 93012. NDC 51407-638-01

Verification delayed

The last verified facts remain visible. Last successful verification: Aug 5, 2026, 7:44 AM UTC. A temporary source failure does not mean the recall changed.

Official information is incomplete

Missing: action. The page is public for lookup but excluded from search indexing and advertising.

1Is my item affected?

Compare the complete identifiers. Name similarity alone is not a confirmed match.

Primidone Tablets, USP, 50 mg, 50-count bottle, RX only, Manufactured by: Lannett Company, Inc., Marketed by: GSMS, Incorporated, Camarillo, CA 93012. NDC 51407-637-05; Primidone Tablets, USP, 250 mg, 100-count bottle, RX only, Manufactured by: Lannett Company, Inc., Marketed by: GSMS, Incorporated, Camarillo, CA 93012. NDC 51407-638-01

Identifiers to compare

  • NDC 51407-637-05
  • NDC 51407-638-01
  • Lot GS067084
  • Lot GS067710
  • Lot GS067873
Affected variants from the official event record
Product or modelCodes and lotsQuantityRecall number
Primidone Tablets, USP, 50 mg, 50-count bottle, RX only, Manufactured by: Lannett Company, Inc., Marketed by: GSMS, Incorporated, Camarillo, CA 93012. NDC 51...Lot#: GS066750, GS067084, GS067710, GS067873, Exp 3/31/2028; GS068339, GS068897, Exp 8/31/20288,526 bottlesD-0534-2026
Primidone Tablets, USP, 250 mg, 100-count bottle, RX only, Manufactured by: Lannett Company, Inc., Marketed by: GSMS, Incorporated, Camarillo, CA 93012. NDC...Lot #: GS067909, Exp 4/30/2028; GS068646, Exp 8/31/20261,620 bottlesD-0535-2026

2What is the risk?

The agency's statement is shown without a site-authored severity score.

Cross contamination with other products: API contaminated with trace amounts of Acemetacin API.

Agency classification: Class III

3What should I do?

Only instructions associated with this recall event qualify as an action.

Consumer action is not available in the associated official record. The site does not infer or generate a replacement.

Verify on the official source

The linked agency record controls if any information differs.

Official evidence

Official scope

Distribution reported by the agency

USA Nationwide

Distribution is context, not a confirmed item match. Compare the model, lot, UPC, NDC, or serial number above.

Material change history

No material affected-item, risk, action, or status change has been recorded since this page entered the tracker.