Cranford, N.J. -- Viona Pharmaceuticals Inc., is voluntarily recalling twenty-three (23) lots of Metformin Hydrochloride Extended-Release Tablets, USP 750 mg at the consumer level. Metformin Hydrochloride Extended-Release Tablets, USP 750 mg were distributed nationwide to distributors.

The recall resulted from an Out of Specification (OOS) result observed for one lot of the product (M008132). The result indicated “N-nitrosodimethylamine (NDMA) (By GC- MS/MS)," which is explained below.

In an abundance of caution, the firm has decided to voluntarily recall 23 batches which we have determined having a valid shelf life within the US market. This product was manufactured by Cadila Healthcare Limited, Ahmedabad, India for U.S. distribution by Viona Pharmaceuticals Inc.

Risk Statement: NDMA is classified as a probable human carcinogen (a substance that could cause cancer) based on results from laboratory tests. NDMA is a known environmental contaminant and found in water and foods, including meats, dairy products, and vegetables.

Patients who have received impacted lots of Metformin Hydrochloride Extended-Release Tablets, USP 750 mg are advised to continue taking their medication and contact their physician for advice regarding an alternative treatment.

According to the FDA, it could be dangerous for patients with this serious condition to stop taking their Metformin without first talking to their healthcare professionals. Please visit the agency’s website for more information. To date, neither Viona Pharmaceuticals Inc., nor Cadila Healthcare Limited have received any reports of adverse events related to this recall.

The product is used as an adjunct to diet and exercise to improve blood glucose control in adults with type 2 diabetes mellitus and is packaged in HDPE bottles of 100 tablets, under NDC 72578-036-01.

The recalled lots of Metformin Hydrochloride Extended-Release Tablets, USP 750 mg are listed in the below table. The product can be identified as white to off-white, capsule shaped, uncoated tablets, debossed with "Z", "C" on one side and "20" on the other side.

Product Name: Metformin Hydrochloride Extended‐Release Tablets, USP 750 mg
NDC: 72578‐036‐01
Sr. No.Batch No.Exp. Date

Viona Pharmaceuticals Inc., is notifying its customers by email and mail (FedEx Overnight) and is arranging for the return of all recalled products to our recall processor at the following address:

Inmar Pharmaceuticals Services-Recalls

3845 Grand Lakes Way,

Grand Prairie, Texas 75050.

Consumers with questions regarding this recall can contact our recall processor Inmar Pharmaceutical Services by phone at 1-855-249-3303, option 1; Monday – Friday (excluding holidays), 9:00 am – 5:00 pm, EST. Consumers should contact their physician or healthcare provider if they have experienced any problems that may be related to taking or using this drug product.

Customers with medical-related questions, who wish to report an adverse event, or quality issues about the products being recalled should contact Viona Pharmaceuticals Inc., by phone at: 888-304-5011, Monday - Friday, 8:30 am – 5:30 pm, EST.

Adverse reactions or quality problems experienced with the use of this product may be reported to the FDA's MedWatch Adverse Event Reporting program either online, by regular mail or by fax.

  • Complete and submit the report Online
  • Regular Mail or Fax: Download form or call 1- 800-332-1088 to request a reporting form, then complete and return to the address on the pre-addressed form, or submit by fax to 1-800-FDA-0178

This recall is being conducted with the knowledge of the U.S. Food and Drug Administration.

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